Earlier today, Ruth Chepngetich ran 2:09:56 at the Chicago Marathon, becoming the first woman to break 2:10. Here are a few fun facts in the wake of Chepngetich’s mark.

• Men’s equivalent marathon performance, according to World Athletics: 1:59:35
• Chepngetich’s average pace per 5K: 15:24.0
• Chepngetich’s average pace for one lap of a standard outdoor track: 73.92 seconds
• Amount by which Chepngetich broke Tigist Assefa’s previous record of 2:11:53: 1 minute, 57 seconds
• Place that 2:09:56 would have finished in today’s men’s race: 10^th
• Chepngetich’s halfway split: 64:16. Her split would have put her fifth on the all-time list of half marathon performances.
• Number of women besides Chepngetich who have run faster than 64:16 in an open half marathon: 3
• Average of Chepngetich’s three fastest marathons: 2:12:57
• Number of women who have run one marathon faster than 2:12:57: 1
• The Chicago Marathon is now the site of the existing men’s and women’s marathon world records. Kelvin Kiptum set the men’s mark, 2:00:35, in Chicago in 2023. Kiptum died in February in a car accident in Kenya, at the age of 24. 
  
• At halfway, her split of 1:04:16 would have put her fifth on the all-time list of half marathon performances.
• Chepngetich won the Chicago Marathon in 2021 and 2022, and she finished second in 2023. It was 2022 when Chepngetich ran her previous personal best, 2:14:18. Before today, that time ranked her fourth all-time among women’s marathoners.
• The winning men’s time at the Sanlam Cape Town marathon in 2023 was 2:11.28 by Ethiopian Adane Gebre.

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