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Trail Running Calendar South East (England) 2025-2026

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Explore the best trail runs in South East (England) for 2025-2026! Our updated list features 172 exciting races across the region. Find your next race in South East (England) below and join the running community at these great events!

June 2026
Jun
20-21
Sa - Su

Centaur 100 Mile Ultra

Trail Run 21 km 42 km ... 100 mi 24 hr
Jun
20
Saturday

Phoenix - Denbies Marathon & Half Marathon

Trail Run 21 km 42 km
Jun
21
Sunday

Midsummer Munro

Trail Run 13 mi
Jun
26
Friday

Run The Seasons at Cowdray

Trail Run 5 km 10 km
Jun
28
Sunday

Marlow Trail Run

Trail Run 5 km 10 km 21 km
July 2026
Jul
5
Sunday

Chiltern Ridge Half Marathon

Trail Run 21 km
Jul
19
Sunday

BigHeat Trails (FIRE)

Trail Run 16 mi 42 km
Jul
26
Sunday

Maidenhead Trail Run

Trail Run 5 km 10 km 21 km
August 2026
Aug
1
Saturday

North Downs 50 Ultra Challenge

Trail Run 10 km 24 km 25 km 50 km
September 2026
Sep
5
Saturday

Henley River Half Marathon

Trail Run 10 km 21 km
October 2026
Oct
3
Saturday

South Downs 100 mile (Autumn Event)

Trail Run 100 mi
November 2026
Nov
8
Sunday

Windsor Trail Run

Trail Run 10 km 21 km
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