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Belgian Ultrarunner Karel Sabbe's Record-Breaking Pacific Crest Trail Run Showcased in New YouTube Documentary

Explore Karel Sabbe's record-breaking Pacific Crest Trail run in a riveting documentary. Jour..

Trail Running: How it Can Help Reduce Stress and Anxiety

Trail running is an effective way to reduce stress, anxiety, and improve physical and mental he..

Trail Running vs. Road Running: Which One Is Right For You?

When it comes to running, there are two primary options to choose from: trail running and road..

Trail Running calendar near Bois-Guillaume 2026-2027

We have found 42 Trailruns within 80 kilometers of Bois-Guillaume. See below where and when you can find the races.

Sunday Nov 15

Trail Malassis

Mantes-la-Jolie - 69 km from Bois-Guillaume

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The Trail Malassis will take place in Mantes-la-Jolie on Sunday 15 November 2026. You can run between 6 and 13 kilometers.

December 2026

Friday Dec 4

Initiation Trail de Nuit - Conches-en-Ouche

Conches-en-Ouche - 58 km from Bois-Guillaume

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The Initiation Trail de Nuit - Conches-en-Ouche will take place in Conches-en-Ouche on Friday 4 December 2026. You can run between 6 and 12 kilometers.

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