Mark Kiptoo Breaks the Over-50 Marathon World Record in Frankfurt

Mark Kiptoo ran 2:15:24 at the Frankfurt Marathon on Sunday, the fastest marathon on record by a man aged 50 or older. The Kenyan, who turned 50 in June, finished 13th overall, only 19 seconds behind Germany’s Omar Tareq and Denmark’s Gustav Krøll, and took 4:05 off a record that had stood for 35 years.

That record belonged to South Africa’s Titus Mamabolo, who ran 2:19:29 in Durban in July 1991, shortly after his own 50th birthday. To beat it, Kiptoo needed to average just under 3:18 per kilometer. He averaged 3:12.5, or 5:10 per mile, through rain and a strong wind that had threatened the race all week and that pushed the leaders off their own record plans long before the finish. Jirata Dinki won the men’s race in 2:05:26. World Masters Athletics ratifies age-group records in the marathon, so Kiptoo’s time still needs its approval before it becomes official.

This was his second over-50 mark in three weeks. On Oct. 4 he won the San Sebastián half-marathon outright in 1:03:57, more than two minutes inside the previous best for the distance, and he was open about what he wanted from Frankfurt. “The M50 record of 2:19:29 is my main goal on Sunday,” he said in comments the organizers released in German before the race. If the race felt good, he added, he would go with the flow.

Frankfurt is where his marathon career started. He made his debut there in 2013, at 37, and lost to Vincent Kipruto by a single second in 2:06:16. He came back the next year to win in 2:06:49, and in 2018, at 42, he ran 2:07:50 for sixth, the fastest marathon any man over 40 had run at the time. Kenenisa Bekele has since lowered that mark, most recently to 2:04:15 at the 2024 London Marathon. Twelve years after his win, Kiptoo was only 8:35 slower in the same city, a loss of 6.8 percent. Most distance runners slow steadily from their mid-30s on, and he has given up just over half a percent a year.

The years in between have been busy. He holds the fastest marathon on record by a man over 45, 2:09:10, which he ran at the Seoul Marathon in March 2024 at the age of 47. He won the Zurich Marathon three years in a row from 2023, the last time at 48 in 2:09:16, and in May he ran 2:12:21 in Geneva, a few weeks too early for the time to count in his new age group. According to the organizers, the COVID-19 pandemic and Achilles tendon problems cost him about a year of training along the way.

He came to running late, through races in the Kenyan Air Force, and built a full track career before he ever tried the marathon. He was seventh at the 2009 World Cross Country Championships, ran his 5,000m best of 12:53.46 in Stockholm in 2010 and won the African 5,000m title in 2012. He already mentors younger runners and has said he wants to do more of that once he stops racing.

The Basque half-marathon in Azkoitia and Azpeitia, which Kiptoo won in 2013 and again in 2018 and which says he has been part of its race since 2010, posted after Frankfurt that he will be back there in 2027. “I want to keep running for as long as my body allows,” he said before Sunday’s race.