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David “Jacko” Jackson’s extraordinary running journey began with a moment that was supposed to end his sporting life.

In 2013, the former Nottingham Rugby winger suffered a seizure during training after experiencing a bleed on the brain. His professional rugby career was suddenly over, leaving him facing a completely different and uncertain future.

More than a decade later, Jackson is turning that life-changing experience into one of the most remarkable endurance challenges of 2026.

The 44-year-old is attempting to complete 100 ultramarathons in 100 consecutive days, running approximately 50 kilometres every day across the United Kingdom. If he reaches the finish line as planned, he will have covered roughly 8,450 kilometres and could surpass the current men's record of 80 consecutive days of ultramarathon running by 20 days.

But for Jackson, the record is only part of the story.

His bigger ambition is to raise £1 million for brain-injury charities Headway UK and Head for Change while showing people affected by brain injuries that recovery can take unexpected directions.

Jackson began the challenge on May 29, 2026, just one day after his 44th birthday, setting off from Caernarfon in North Wales. His planned final day is September 5, meaning he must repeatedly ask his body to absorb an ultramarathon effort, recover and start again the following morning.

The scale of the undertaking becomes even clearer when the distance is put into perspective. His projected 8,450 kilometres is roughly equivalent to travelling from London to Los Angeles.

Yet Jackson is not simply running one enormous route from one destination to another. His challenge has been carefully structured around repeated 5-kilometre and 10-kilometre loops at 25 locations around the UK. He spends four days at each location before moving on to the next.

That approach has an important purpose. Rather than making the challenge something only elite ultrarunners can experience, Jackson has created opportunities for ordinary runners and members of the public to join him for a lap. Someone training for a first 10-kilometre race can run alongside him for 5 kilometres. Another runner can join for 10. Others can simply come out and offer encouragement.

The message is clear: nobody has to run the entire 50 kilometres to become part of the journey.

Bournemouth became another important chapter in that journey, with Jackson scheduled to spend four days in the Bournemouth and Swanage area from August 1 to August 4. The Bournemouth stage represents day 65 of the 100-day mission, meaning Jackson will already have completed more than 3,000 kilometres by the time he reaches this part of the route.

For a man who once wondered what life would look like after rugby, the transformation is extraordinary.

Jackson was not an ordinary club player. He left Nottingham Rugby as the club's most-capped player, having made 316 appearances and scored 102 tries. His career had been defined by consistency and longevity until the brain injury brought it to an abrupt end.

The months that followed were difficult. Jackson had been married to his wife, Catherine, for less than two months when the injury occurred. His recovery was measured not in weeks but in years. It took about a year before he was properly back on his feet, while his first marathon would not come until seven years after the brain injury.

Running gradually became part of his recovery.

What started as a way of rebuilding his life has since developed into an extraordinary endurance pursuit, culminating in a challenge that demands something completely different from the speed and explosiveness required on a rugby field.

The purpose behind the 100 ultramarathons is deeply personal. Jackson has spoken about his own lack of awareness of specialist brain-injury organisations during his recovery and wants others facing similar circumstances to have access to the support and information they need.

That is why the £1 million fundraising target matters so much.

Every kilometre is helping him tell a larger story about brain injury, recovery and resilience.

Jackson has even created his own word to describe the philosophy behind the project: “IN-possible.”

The idea is that something that looks impossible when viewed as a whole can become achievable when broken into smaller challenges. One 50-kilometre run may be difficult but manageable. Then comes another. Then another. Eventually, those individual efforts become 100 ultramarathons in 100 days.

The philosophy draws inspiration in part from the Marathon Monks of Japan, whose legendary endurance practices demonstrate how years of discipline can transform seemingly impossible physical challenges into achievable objectives.

But Jackson's challenge has already produced moments when the word “impossible” seemed very real.

The toughest day so far came on day 14, when he suffered a running injury. Despite the pain, he completed the 50-kilometre distance, taking approximately 12½ hours and finishing while barely able to walk.

He had reached the point where he wanted to quit.

He wanted to go home.

Then came the intervention of Catherine, who reminded him that if he could still walk, he could keep going for the charities.

He continued.

That moment says more about the challenge than the statistics. Completing 100 ultramarathons is not simply a test of cardiovascular fitness or running ability. It is a test of durability, recovery, patience and mental resilience.

Running 50 kilometres once is difficult.

Running 50 kilometres when you know another 50 is waiting tomorrow is something else entirely.

The objective is therefore not speed. It is sustainability.

Jackson must control his pace, protect his body, eat and hydrate properly, sleep as much as possible and recover sufficiently between efforts. The support around him is just as important as the kilometres beneath his feet.

That is the reality of a 100-day ultra streak: tomorrow's run is always part of today's strategy.

If Jackson completes the mission, he will surpass the current men's record of 80 consecutive ultramarathon days by 20 days—a remarkable margin in an endurance discipline where records are often separated by much smaller differences.

Yet the record is not what Jackson appears to care about most.

The £1 million fundraising target, greater awareness of brain injury and the opportunity to demonstrate what recovery can look like are the real objectives.

The record, if it comes, will be the consequence.

There is something particularly powerful about Jackson's transformation. A man whose sporting career ended because of a brain injury is now using running to build an entirely new chapter of his athletic life.

His story is no longer about what happened to him on a rugby training field in 2013.

It is about what he chose to do afterwards.

Every morning, another 50 kilometres.

Every day, another test.

Every loop, another reminder that the impossible can sometimes be reduced to one manageable step at a time.

And as David “Jacko” Jackson continues his remarkable 100-ultramarathon journey towards September 5, the record books may eventually remember the number of consecutive days he ran.

But the greater legacy could be the message behind every one of those days: a career can end, a life can change in an instant, but neither necessarily has to mark the end of the journey.

Ethiopia’s Fotyеn Tesfay Haylu delivered one of the most remarkable women’s half-marathon performances ever seen on American soil on Sunday, powering to a commanding victory at the 2026 Buenos Aires Half Marathon in Argentina in 1:03:57.

Running with exceptional confidence and strength, Tesfay took control of the race and produced a superb solo performance to rewrite the event record. Her breathtaking run also carried historic significance, as she became the first woman to break the 64-minute barrier for the half marathon in the Americas, producing what is being celebrated as the fastest women’s half-marathon performance ever recorded on the continent.

The Ethiopian star was in a class of her own, crossing the finish line more than a minute clear of Turkey’s Nevin Can, who finished second in 1:05:06. Another Turkish athlete, Selin Can, completed the podium in third place with 1:05:11, as the leading trio all produced strong performances on the fast streets of Buenos Aires.

Kenya also featured prominently in the top positions, with Irene Jepchumba Kimais taking fourth in 1:06:04, followed by Sheila Chepkirui in fifth with 1:06:13. Magaret Akidor Ngathike finished sixth in 1:06:46, while fellow Kenyan Deborah Samum claimed seventh place in 1:08:32.

Brazil’s Nubia de Oliveira Silva was eighth in 1:11:13, while Argentina’s Sofia Luna and Dahyana Juarez rounded out the top 10 with times of 1:11:21 and 1:11:28, respectively.

Top 10 Women – 2026 Buenos Aires Half Marathon

1. Fotyеn Tesfay Haylu (Ethiopia) – 1:03:57

2. Nevin Can (Turkey) – 1:05:06

3. Selin Can (Turkey) – 1:05:11

4. Irene Jepchumba Kimais (Kenya) – 1:06:04

5. Sheila Chepkirui (Kenya) – 1:06:13

6. Magaret Akidor Ngathike (Kenya) – 1:06:46

7. Deborah Samum (Kenya) – 1:08:32

8. Nubia de Oliveira Silva (Brazil) – 1:11:13

9. Sofia Luna (Argentina) – 1:11:21

10. Dahyana Juarez (Argentina) – 1:11:28

For Tesfay, it was far more than a race victory. Her 1:03:57 performance was a statement of extraordinary quality, combining speed, endurance and remarkable solo running to produce a landmark result in Buenos Aires. In a race that will be remembered for years to come, the Ethiopian did not simply win—she redefined what was thought possible for women’s half-marathon running in the Americas.

Ethiopia’s Yomif Kejelcha produced one of the most extraordinary performances in road racing history on the streets of Buenos Aires, Argentina, reclaiming the half marathon world record with a sensational 56:51 performance at the 2026 Buenos Aires Half Marathon.

The former world record-holder delivered a breathtaking exhibition of speed and endurance to take 29 seconds off the previous pending mark of 57:20, set by Uganda’s Jacob Kiplimo and takes a huge chunk from his own former official world record. Kejelcha's new performance is pending the standard ratification procedures, but if officially ratified, it will return the world record to the Ethiopian star and mark another remarkable chapter in the evolution of the event. 

Kejelcha's achievement is particularly significant because the 57-minute barrier had already been broken before. Jacob Kiplimo had previously run under 57 minutes, clocking 56:42 that was not ratified demonstrating that the once-unthinkable barrier was possible. Kejelcha, however, has become the second man to run under 57-minute barrier who now returns to the top of the all-time rankings with another historic performance in Buenos Aires.

The Ethiopian's race was remarkable not only for the final time but also for the way he built his performance. He covered the opening five kilometres in 13:44 before reaching 10km in 27:18. Rather than slowing, Kejelcha accelerated through the middle stages, passing 15km in 40:39 and 20km in 54:02 as he continued to push the limits of elite road racing.

By the time he reached the finish line, Kejelcha had completed the race at an extraordinary average pace of approximately 2:42 per kilometre, producing one of the most astonishing sustained efforts ever witnessed in distance running. His stunning run sent a powerful message to the athletics world and further strengthened his status as one of the most formidable distance runners of his generation.

Behind the record-breaking champion, Ethiopia completed a dominant clean sweep of the men's podium. Tadese Worku Gebresilase claimed second place in 59:18, while Bereket Nega Batebo secured third in 1:00:17, giving Ethiopia a memorable one-two-three finish in the Argentine capital.

Kenya’s Jonathan Kipkoech Kamosong finished fourth in 1:00:20, followed by compatriot Simon Maywa in fifth with 1:00:55. Argentina’s Ignacio Erario gave the home supporters plenty to celebrate with an impressive sixth-place finish in 1:00:57, breaking the one-hour barrier in front of an enthusiastic local crowd.

Dillon Kipyeko of Kenya finished seventh in 1:01:07, with Robert Kiprop Koech eighth in 1:02:01. Mexico’s Julio Ortiz Ponce took ninth place in 1:03:17, while Colombia’s Jimmy Gómez completed the top 10 in 1:03:34.

The Buenos Aires Half Marathon will now take its place in the history books as the scene of a truly extraordinary breakthrough. For Kejelcha, this was more than just another victory. It was a spectacular return to the top, reclaiming a world record he had previously held and once again rewriting the limits of the half marathon.

The 56:51 performance remains pending ratification, but Yomif Kejelcha's run has already delivered one of the defining moments in the history of road racing.

Kenya delivered another commanding display of distance-running excellence at the Antrim Coast Half Marathon, with Isaia Lasoi leading a memorable Kenyan clean sweep of the men's podium in a race packed with world-class performances.

Lasoi emerged victorious after a thrilling battle at the front, crossing the finish line in a superb 58:26 setting a new course record. His winning performance underlined his strength and speed over the half-marathon distance, but he was made to work all the way by fellow Kenyan Daniel Mateiko, who finished just three seconds behind in 58:29 after an electrifying duel for the title.

The contest between the two leaders produced one of the standout moments of the race, with both athletes pushing deep into elite territory as they fought for victory. In the end, Lasoi found just enough to secure the win, while Mateiko's narrow defeat highlighted the remarkable depth and quality of Kenya's leading distance runners.

Vincent Kipkorir completed the Kenyan sweep, taking third place in 1:00:38 to ensure that all three places on the podium belonged to Kenyan athletes. Samwel Chebolei added further Kenyan strength to the results, finishing fourth in 1:01:01, while Amos Langat was also among the leading finishers.

The international field featured several prominent names. Australia's Jimmy Whelan produced a strong run, while Ethiopia's Yismaw Dillu featured among the front group. American marathon star Galen Rupp also delivered a notable performance, clocking 1:01:29 in another competitive outing for the experienced distance runner. Former world-class track and road athlete Edward Cheserek was also among the top finishers.

Lasoi's 58:26 victory, however, was the defining performance of the day. Together with Mateiko and Kipkorir, he gave Kenya a perfect podium and another emphatic reminder of the country's extraordinary strength in elite road running.

The Antrim Coast Half Marathon once again provided a fast, competitive stage for some of the world's finest distance runners, but when the decisive moments arrived, it was Kenya that owned the podium.

One of the most iconic milestones in the history of ultramarathon running is drawing closer, with entries for the historic 100th edition of the Comrades Marathon set to open on Tuesday, 25 August 2026.

The Comrades Marathon Association has officially announced a detailed entry process for the 2027 race, which will unfold in three stages and give runners around the world the opportunity to secure their place in what promises to be one of the most significant editions ever held of The Ultimate Human Race.

The announcement followed the official launch of the 2027 Comrades Marathon on Wednesday, 19 August, when the centenary campaign, “The Greatest Story Ever Run,” was unveiled alongside a special logo created exclusively for the landmark 100th edition.

The launch also revealed several major highlights for the Centenary Race. The historic event will take place on Sunday, 13 June 2027, and will be a Down Run, with 28,000 places available. The entry process will include a ballot, while the race will offer a record R8.919 million in prize money. Organisers have also set an ambitious goal of raising R10 million for the Amabeadibeadi charities, adding an important charitable dimension to the centenary celebrations. One of the defining moments of the launch was the unveiling of the special Centenary mark, created to commemorate this extraordinary milestone in the history of the race.

The entry process begins on 25 August at 10:00 a.m. SAST, when entries open for Green Number runners, Yellow Number runners and Amabeadibeadi charity entrants.

The next phase follows on 2 September at 10:00 a.m. SAST, when entries open for Comrades Marathon Association members. This window will remain open for 72 hours or until the available entry allocation is filled, with places offered on a strictly first-come, first-served basis.

For general entrants, the process will move to a ballot system. General entries open on 9 September at 10:00 a.m. SAST, with runners able to enter the ballot until it closes on 22 September at 4:30 p.m. SAST. The ballot draw is then scheduled to take place on 23 September.

Several other crucial dates will shape the road to the historic race. The substitution period will run from 15 to 31 March 2027, while 3 May 2027 is the final deadline for runners to submit their qualifying performances, seeding information and other required entry details.

To qualify for the 2027 Comrades Marathon, runners must complete a 42.2km marathon in under five hours between 15 June 2026 and 3 May 2027.

The journey will finally culminate on Sunday, 13 June 2027, when thousands of runners are expected to line up for the historic 100th edition of the Comrades Marathon.

The 2027 race will represent a remarkable moment for the legendary South African ultramarathon. For more than a century, the Comrades Marathon has captured the imagination of runners and spectators with its extraordinary test of endurance, determination and human spirit. Its centenary edition will celebrate the generations of athletes who have faced its demanding roads, conquered its challenges and helped build one of the world's most respected endurance events.

For runners dreaming of becoming part of this historic occasion, the road to Comrades 2027 is now clearly marked. From the opening of entries in August 2026 to race day in June 2027, every deadline will matter.

The Greatest Story Ever Run is preparing for its most historic chapter yet.

American sprint standout Sam Blaskowski is taking steps toward an international future with Poland after uncovering a powerful connection to his family's ancestral homeland.

The 23-year-old sprinter, who has established himself as one of the fastest Americans of his generation with a personal best of 9.89 seconds in the 100 metres, has begun the process of obtaining Polish citizenship with the aim of eventually representing Poland in international competition.

Blaskowski's connection to the country traces back through his great-grandparents, Franciszek and Julian Błaszkowski, who emigrated from Poland to the United States in 1905. Their journey more than a century ago has now opened an unexpected new chapter for their descendant, whose athletic ambitions could soon carry the Błaszkowski name back onto the international stage under Polish colours.

The sprinter has already received support from the Polish Athletics Association as he works through the citizenship and eligibility process. Should his transfer of allegiance be completed, Blaskowski could become a significant addition to Poland's sprint programme.

His credentials certainly make the prospect an exciting one. In addition to his sub-10-second speed over 100 metres, Blaskowski owns a personal best of 19.93 seconds in the 200 metres, demonstrating the kind of versatility that could prove valuable both individually and in Poland's 4x100m relay squad.

For Blaskowski, however, the move is about more than simply changing national colours. It represents an opportunity to reconnect with his family's heritage while pursuing his ambitions at the highest level of the sport.

With his sights set on becoming part of Poland's international sprint team and competing for relay medals, Blaskowski's journey from discovering his Polish roots to potentially representing the country of his ancestors could become one of the most fascinating allegiance stories in world athletics.

A century after Franciszek and Julian Błaszkowski left Poland for America, their family's story may now be coming full circle—this time at full sprint.