Hamilton runner sets new 100 km backward run world record

Kat Clewley, a Hamilton runner, set a new Guinness World Record for running 100 km backward at the Ray Lewis Track & Field Centre. She finished in 15:29:01, awaiting verification. The event was a celebration of retro-running, with local runners joining her.

Clewley completed 250 laps, running in lanes one and two. Her Garmin recorded over 104 km, including breaks. For Clewley, an experienced ultra-runner, this was a chance to combine her background with retro-running. Read more racing coverage.

Clewley discovered retro-running in 2015 and has since won multiple medals. After a break due to injury and personal loss, she returned to pursue a longer-distance goal. Her training included 30-minute sessions and adjusting her sleep schedule. Related: Belgian Duo Sets New Backyard Ultra World Record.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.

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What should runners know about Hamilton runner sets new 100 km backward run world record?

Kat Clewley completed the retro-running challenge in 15:29:01 at Ray Lewis Track & Field Centre. Kat Clewley, a Hamilton runner, set a new Guinness World Record for running 100 km backward at the Ray Lewis Track & Field Centre. She finished in 15:29:01, awaiting verification. The event was a celebration of retro-running, with local runners joining her.

When did Runner World publish this racing brief?

Runner World published this brief on October 23, 2026. The underlying Canadian Running report was dated October 22, 2026.

Where can readers find the complete original report?

This summary is based on reporting from Canadian Running. The attributed source link in the article leads to the publisher’s complete report.

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