Running News Daily

Two years apart, on the same streets of Chicago, two East African greats delivered marathon performances that will be remembered for generations.

In 2023, Kenya’s Kelvin Kiptum stunned the world with his 2:00:35 world record, a run that redefined endurance and perfection.

In 2025, Uganda’s Jacob Kiplimo, already the half marathon world record holder, returned to Chicago for his second career marathon and clocked 2:02:23 — his personal best and the seventh-fastest marathon ever run.

Split by Split — The Chicago Comparison

How They Ran

Kelvin Kiptum (2023):

Kiptum ran one of the most perfectly executed marathons in history. After a steady opening half in 1:00:48, he unleashed a ferocious negative split of 59:47, the fastest second half ever recorded. His closing 10K in 27:52 sealed a new world record and forever changed how we think about the marathon.

Jacob Kiplimo (2025):

After finishing second in his marathon debut at the 2025 London Marathon, Kiplimo arrived in Chicago more prepared — and fearless. From the start, he attacked the course, opening in 13:58 for 5K, the fastest ever in Chicago. Through 30K, he was over a minute ahead of Kiptum’s world-record pace. Although he slowed slightly in the final 10K, his 2:02:23 finish was the fastest ever by an Ugandan and the 7th-fastest marathon in history.

⚖️ The Contrast

• Strategy: Kiptum’s patience vs. Kiplimo’s aggression.

• Halfway: Kiplimo led by 32 seconds at 21.1K.

• Closing Power: Kiptum’s final 7K (13:51 split) remains unmatched.

• Outcome: Kiplimo’s performance wasn’t a world record, but it confirmed his place among the greatest marathoners of his generation.

Legacy and Continuation

Tragically, Kelvin Kiptum was killed in a car accident in Kenya in February 2024, just months after his world-record run. His passing shocked the running world and ended the career of a man many believed would one day break two hours on a record-eligible course.

When Jacob Kiplimo returned to Chicago in 2025, it felt like a continuation of that story — a symbolic passing of the torch. Running on the same course where Kiptum made history, Kiplimo carried forward the East African legacy of excellence, courage, and speed.

Final Thoughts

Kiptum’s 2:00:35 remains the marathon’s gold standard — calm, controlled, and utterly brilliant.

Kiplimo’s 2:02:23 showed fearless front-running and a promise of what’s still to come.

Two men. Two races. One city.

Chicago — where the modern marathon’s greatest chapters continue to be written.

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The 9 Fastest Men’s Marathons of All Time (as of Oct 13, 2025)