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Trail Running Calendar near Hertfordshire 2025-2026

Monthly updates for Hertfordshire

Get new running races (and updates) in your inbox every month.

Explore the top trail runs near Hertfordshire for 2025-2026! We've gathered 96 exciting races in the area. Check out our detailed list below to find your next local race.

September 2026
Sep
20
Su

Bradenham Blast

Trail Run 5 km 10 km Half Marathon
Sep
20
Su

Ouse Valley Way Races

Trail Run Half Marathon Marathon
Sep
27
Su

Grantchester Charity Runs

Trail Run 3 km 10 km
October 2026
Oct
3
Sa

London Epping Forest 50 Km

Trail Run 50 km
Oct
3
Sa

London Ecotrail 25 Km

Trail Run 25 km
Oct
4
Su

Thames Meander Autumn

Trail Run 10 km Half Marathon Marathon
Oct
25
Su

Stort30 Ultra

Trail Run 30 mi
Oct
31
Sa

Chiltern Ridge Winter 50K

Trail Run 50 km
November 2026
Nov
1
Su

Wendover Woods Marathon

Trail Run 10 km Half Marathon Marathon
Nov
6-7
Fr - Sa

Enigma Fireworks

Trail Run Half Marathon Marathon
Nov
8
Su

Windsor Trail Run Half Marathon

Trail Run 10 km Half Marathon
Nov
8
Su

Saturn Running - Egham

Trail Run 3 km 5 km ... Marathon 50 km
Nov
8
Su

SATURN - Remembrance Run - South

Trail Run 3 km 7 km ... Marathon 50 km
Nov
14
Sa

Centurion Wendover Woods 50

Trail Run 50 mi
Nov
21
Sa

Runaway Adventures - North Chilterns 50K

Trail Run 50 km
Nov
21
Sa

Thames Path Trail Run

Trail Run 16 km 22 km