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Trail Running Calendar near Harrow 2025-2026

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Explore the top trail runs near Harrow for 2025-2026! We've gathered 112 exciting races in the area. Check out our detailed list below to find your next local race.

February 2026
Feb
22
Sunday

Winter Trail Run

Trail Run 5 km 10 km
Feb
22
Sunday

North Downs Ridge 50k

Trail Run 50 km
Feb
25
Wednesday

Thursley Common 10km

Trail Run 10 km
Feb
28
Saturday

Fitstuff G3 Series

Trail Run 10 km 15 km
March 2026
Mar
3
Tuesday

Silent Pool 10km

Trail Run 10 km
Mar
7
Saturday

Humanity Direct Amersham Ultra

Trail Run 10 km 25 km 50 km
Mar
8
Sunday

Leith Hill Half Marathon

Trail Run 13 mi
Mar
14
Saturday

Centurion Hundred Hills 50km

Trail Run 50 km
Mar
21
Saturday

Gratitude 25km

Trail Run 25 km
Mar
21
Saturday

ZigZag - Moo-rathon, Calf and Hen K at the Farm

Trail Run 10 km Half Marathon Marathon
Mar
21
Saturday

Surrey Hills Half Marathon

Trail Run 13 mi
Mar
22
Sunday

Y2Y North Downs Trek / Run

Trail Run 14 mi 26 mi
Mar
22
Sunday

Windsor Trail Run Half Marathon

Trail Run 10 km Half Marathon
Mar
24
Tuesday

Hankley Common 10km

Trail Run 10 km
Mar
28
Saturday

Run the Wild Half Marathon - Spring Edition

Trail Run Half Marathon
April 2026
Apr
3
Friday

Saturn 7 Hour Time Challenge - Wraysbury

Trail Run 3 km 7 km ... Marathon 50 km
Apr
11
Saturday

Henley River Half Marathon

Trail Run 10 km Half Marathon
Apr
18
Saturday

Windsor 50 Ultra Challenge

Trail Run 10 km 25 km 50 km
Apr
18
Saturday

Chiltern Ridge Classic 50k

Trail Run 51 km
May 2026
May
1
Friday

Saturn 7 Hour Time Challenge - Wraysbury

Trail Run 3 km 7 km ... Marathon 50 km
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