Russ Cook misses sub-2:35 target

Russ Cook went into the 2026 London Marathon chasing 2:35 after dropping his original sub-2:30 goal six weeks earlier. (run247.com) (news.sky.com) Cook, known as the “Hardest Geezer,” had opened the year saying stage one of his new plan was a 2:30 marathon as part of a bid to qualify for Team GB in 24-hour ultrarunning. (run247.com) By March 20, 2026, he said “a 2:30 is not going to happen in London” and reset the target to 2:35, saying the bigger project was still alive. (run247.com) That shift says a lot about the jump from ultra-endurance to road speed. Cook has built his name on very long, slow durability efforts, including his 352-day run the length of Africa that ended in April 2024. (en.wikipedia.org) (stories.strava.com) A marathon at 2:35 pace is a different problem: it demands holding roughly 5 minutes 55 seconds per mile, or about 3 minutes 41 seconds per kilometer, for 26.2 miles. (strava.com) Cook’s public training arc reflected that change. He used the 2025 New York City Marathon as a baseline test and said afterward that he was now “chasing Team GB.” (youtube.com) The London attempt was also framed as the first of seven “semi-impossible” challenges. Cook has said the list includes a sub-7:30 100 kilometers, a 250-kilometer race in 24 hours, Team GB 24-hour qualification, a Land’s End to John o’ Groats record, a San Francisco-to-New York run, and a 581-kilometer nonstop run. (run247.com) London itself turned into a historic race day at the front, with Sabastian Sawe winning in 1:59:30 and Tigst Assefa taking the women’s race in 2:15:41. Cook’s own marathon unfolded in the middle of a mass field that organizers expected to top 59,000 starters. (news.sky.com) (olympics.com) For Cook, London was less a finish line than a checkpoint. He had already said the sub-2:30 dream was “not dead,” only postponed, and London was the first test of whether an ultrarunner’s engine can be rebuilt for speed. (run247.com)