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After recovering quickly from the emergency surgery on July 5, Miller was hopeful to start the 100-mile race through Colorado's San Juan MountainsZach Miller had been looking forward to running the Hardrock Hundred Mile Endurance Run in southwestern Colorado for years.

The 35-year-old runner sponsored by The North Face received entry into the 2024 event via one of race director Dale Garland’s six personal picks, and with a solid regimen of training under his belt, Miller appeared to be one of the favorites for this year’s event on July 12-13. But on July 5, he woke up in Silverton, Colorado, with considerable abdominal pain. Doctors in Durango, Colorado, initially thought he might have been suffering from kidney stones—the pain was consistent to a 25-hour episode he said he suffered in mid-June—but a few hours later, he had an emergency appendectomy via a laparoscopic surgical procedure.

Miller’s appendix didn’t burst, but doctors removed it because they believed it was imminent. But soon after the procedure, he said he started thinking about the chance to be on the Hardrock starting line. He said he was walking around the hospital later in the evening after the procedure, and the next day, after he was released from the hospital, he walked about 3 miles in Durango. The following day, he rode his gravel bike in Silverton without any pain, and the the day after that—three days after the surgery—he was back running the trails around Silverton with mild post-surgical discomfort.

By Wednesday of this week, after running 8 miles and 6 miles on back-to-back days, Miller said he had hoped to start the 100.5-mile event and received verbal consent from his doctor. By Thursday morning, that consent came in written form, which he then submitted to Hardrock officials.

Miller said he had consulted with his doctor, his girlfriend, Jess, and several other people close to him and decided he wanted to continue with his intent to run. He said he didn’t feel any pain running this week, only some slight discomfort from the suture closures at the three point-of-entry holes in his abdomen that provided access for the laparoscopic procedure.

However, the Hardrock board of directors met with its medical advisors on Thursday and decided Miller would be ineligible to start the event. (Hardrock officials did not respond to RUN’s request for an interview or statement about the situation.)

“The recovery’s been really smooth, every day’s been better,” Miller said Thursday afternoon. “I ran the past four days and biked the other, and I felt surprisingly good. Honestly, I felt like I could go out there and give it a good hard go. Would I have? I don’t know, but I felt like there was a shot.”Miller said he understands the liability and safety concerns—both for his health and for the heightened potential of on-course evacuation if a problem did arise—and respects Hardrock’s decision.

“I think if they gave me the green light, it was pretty much decided I was going to go for it,” said Miller, who finished second at the Ultra-Trail du Mont-Blanc in Chamonix, France, last summer. “But we didn’t get it, and that’s just the way it is, so I’ll just move on from here. There’s definitely some disappointment, but it was a difficult and unexpected situation, and nobody wanted to be in that situation and making those decisions. As much as it hurts, it’s understandable, and it’s the responsible thing to do.”

In the months leading up to Hardrock, Miller had been running 140-150 miles per week between 40,000 and 56,000 vertical feet of gain training in Bend, Oregon, Manitou Springs, Colorado, and eventually Silverton. He said he hopes to maintain his fitness and then pivot to another event or a potential fastest known time attempt in the near future, but said on Thursday he hadn’t yet thought about that in detail.

On Thursday evening, after learning he wasn’t going to be able to run, he went on a two-hour run near Silverton that covered 12 miles with 1,200 feet of vertical gain.

“There are still some good races left for the year and there’s always plenty of projects and FKTs to consider so the fitness I’ve enjoyed from the training doesn’t have to be wasted,” he says. “It’s still there and I can hopefully go use it somewhere else.”

Jamaica’s Oblique Seville delivered another sensational statement at the Silesia Wanda Diamond League, storming to victory in a breathtaking men’s 100 metres and setting a new meeting record of 9.83 seconds that made sprinting history in Chorzów, Poland.

In one of the deepest and most extraordinary sprint races ever witnessed, Seville powered clear of a world-class field to take the win, with Kenneth Bednarek of the United States finishing second in 9.87 and fellow American Christian Coleman completing the podium in 9.93.

But Seville’s meeting-record victory was only one part of the remarkable story. For the first time in history, all nine athletes in a single men's 100m race broke the 10-second barrier, producing an unprecedented display of sprinting depth.

The historic race also marked only the second time that every athlete in a men's 100m final had broken 10 seconds, following the eight-man final at the Paris 2024 Olympic Games. In Silesia, however, the achievement went even further, with an entire nine-man field dipping below the iconic barrier.

Nigeria’s Kayinsola Ajayi produced another impressive performance to finish fourth in 9.94, while South Africa’s Gift Leotlela followed in fifth with 9.95. Canada’s Olympic champion Andre De Grasse clocked 9.96 in sixth, with South African star Akani Simbine recording the same time in seventh.

American Ronnie Baker added another sub-10-second performance with 9.97 for eighth place, while Cameroon’s Emmanuel Eseme ensured the historic sweep was complete by running 9.99 in ninth.

Men's 100m Results – Silesia Wanda Diamond League

1. Oblique Seville (Jamaica) — 9.83 Meeting Record

2. Kenneth Bednarek (United States) — 9.87

3. Christian Coleman (United States) — 9.93

4. Kayinsola Ajayi (Nigeria) — 9.94

5. Gift Leotlela (South Africa) — 9.95

6. Andre De Grasse (Canada) — 9.96

7. Akani Simbine (South Africa) — 9.96

8. Ronnie Baker (United States) — 9.97

9. Emmanuel Eseme (Cameroon) — 9.99

For Seville, the victory was another emphatic demonstration of his exceptional form and his ability to rise to the occasion against the strongest opposition. His 9.83 not only secured the Diamond League win but also lowered the Silesia meeting record, putting an exclamation mark on a performance of the highest quality.

Nine men went under 10 seconds. Seville went under 9.84. On an unforgettable day in Silesia, the Jamaican stood tallest in a race that pushed the boundaries of what men's sprinting has ever seen.

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.