Jacob Kiplimo just reclaimed what he believes was rightfully his all along.
At the 2026 Lisbon Half Marathon in Portugal, the Ugandan phenom shattered expectations and silenced critics with a blistering 57-minute, 20-second performance that officially stands as the new world record.
But this wasn’t just about breaking records—it was about redemption.
After having his previous world record controversially stripped away due to alleged drafting behind a lead vehicle, Kiplimo returned to prove he’s simply built different when it comes to half marathon racing.
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A Blistering Start With World Record Intent
From the opening gun, Kiplimo made his intentions crystal clear. Alongside fellow East African elites Nicholas Kipkorir and Gilbert Kipkemboi, he blazed through the first 5 kilometers in 13 minutes and 28 seconds—a pace of 4 minutes, 20 seconds per mile or 2:41.6 per kilometer.
This wasn’t conservative racing. This was an all-out assault on Yomif Kejelcha’s standing world record of 57 minutes and 30 seconds.
By the 10-kilometer mark, the trio clocked 27 minutes flat, with their second 5K coming in at 13:32. Their projected finish? Just under 57 minutes—a time that exists only in the realm of running’s absolute elite.
The Barcelona Controversy That Fueled This Performance
Understanding what drove this performance requires looking back to 2025. At the Barcelona Half Marathon, Kiplimo stunned the running world with an astonishing 56 minutes and 42 seconds—what many considered the greatest road running record ever achieved.
Then came the controversy.
World Athletics determined that Kiplimo ran too close to the lead vehicle throughout the race, potentially benefiting from its slipstream. Despite his protests that he was simply in phenomenal shape, they refused to ratify the record.
From that moment, redemption became Kiplimo’s mission. He would reclaim what he believed was rightfully his—and he’d do it cleanly, with no room for debate.
When The Race Really Began
After the 15-kilometer checkpoint—crossed in 40 minutes and 52 seconds—Gilbert Kipkemboi began to fade. Maintaining sub-4:20 mile pace for over six consecutive miles had taken its toll.
But Kiplimo wasn’t done applying pressure.
Shortly after 15K, he increased his rhythm dramatically and quickly dropped Kipkorir, opening a gap that would only grow larger over the final kilometers. While Kipkorir continued running strong—upright, pushing hard—what Kiplimo was doing up front belonged to another dimension entirely.
By the 50-minute mark, Kiplimo had established a commanding 30-second lead. The world record was within reach, but he’d been here before. He’d set the world record on this very Lisbon course back in 2021, only to see it beaten by a single second. Then came Barcelona and the subsequent heartbreak.
This time, there would be no doubt.
A Negative Split To Seal Immortality
Despite slowing between 10K and 15K, Kiplimo proved why he’s considered the half marathon specialist. His final 5 kilometers came in at 13 minutes and 31 seconds—a negative split that demonstrated not just speed, but incredible tactical maturity and mental fortitude.
His legs were burning. His lungs were screaming. But his determination was unbreakable.
When Kiplimo crossed the line in 57 minutes and 20 seconds, he’d achieved more than just a world record. He’d reclaimed his reputation and silenced every critic who questioned whether his Barcelona performance was legitimate.
What This Performance Actually Means
Breaking down the numbers reveals just how extraordinary this achievement truly is:
- Per-mile pace: 4 minutes, 22 seconds
- Per-kilometer pace: 2 minutes, 43 seconds
- Total distance: 21.0975 kilometers (13.1 miles)
To put this in perspective, go to your local track and run two-and-a-half laps in 2 minutes and 43 seconds. If you can accomplish that, congratulations—but remember that Kiplimo maintained that exact pace for 21 straight kilometers.
The man is simply built different.
This Wasn’t Even His Primary Focus
Perhaps the most remarkable aspect of this world record? Kiplimo is currently building toward the 2026 London Marathon, meaning he’s putting in significantly more mileage than he typically would for half marathon preparation.
He’s not sharpened specifically for 13.1 miles. He’s training for 26.2.
Kiplimo has only competed in two marathons to date. He placed second at the 2025 London Marathon in 2:03:37, then won last year’s Chicago Marathon in an impressive 2:02:02. In Chicago, he went through halfway in 1 hour and 16 seconds—right on pace to challenge Kelvin Kiptum’s world record of 2:00:35 and potentially even threaten the mythical sub-2-hour barrier.
Though he struggled in the second half of that race, the foundation was clearly there.
Could London 2026 Be Historic?
With this half marathon performance fresh in the books and two full months of marathon-specific preparation ahead, whispers are growing louder: Could Jacob Kiplimo break the 2-hour marathon barrier in London?
While London isn’t typically the venue for record attempts—Berlin and Chicago currently hold that distinction—it’s far from slow. Kelvin Kiptum owns the course record at 2:01:25, achieved with a negative split that demonstrated the course’s potential.
If Kiplimo can execute a controlled opening half and close with the same devastating speed he showed in Lisbon, history could be within reach.
A Legacy Beyond Records
Kiplimo’s greatness extends far beyond this single performance. He’s now won three consecutive World Cross Country Championships—a feat that demonstrates versatility, consistency, and championship mentality across different racing formats.
His personal best list reads like a who’s who of distance running excellence across multiple disciplines. And now, once again, he holds the half marathon world record—a title he believes should never have been taken from him in the first place.
The ecstatic post-race photos told the complete story. This wasn’t just joy—it was vindication.
What Comes Next
With Lisbon now behind him and London looming on the horizon, Jacob Kiplimo stands at a crossroads of running history. He’s already proven he’s the greatest half marathoner alive. The question now is whether he can translate that speed and endurance into marathon greatness.
If his Lisbon performance is any indication—achieved while training for a completely different distance—the running world should be prepared for something special.
Kiplimo has repeatedly demonstrated that when doubted, he responds with performances that silence critics and rewrite record books. Barcelona may have broken his heart, but Lisbon proved what he’s known all along.
He is, and always has been, that good.
