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Half Marathon Calendar near Hertfordshire 2026-2027

Monthly updates for Hertfordshire

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

Explore the top half marathons near Hertfordshire for 2026-2027! We've gathered 195 exciting races in the area. Check out our detailed list below to find your next local race.

January 2026
Jan
9
Fr

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 50 km 7 hr
Jan
10
Sa

Saturn Running - Staines-upon-Thames

3 km 5 km ... Marathon 50 km
Jan
11
Su

RunThrough - Battersea Park

Half Marathon
Jan
18
Su

Run Dorney Lake Marathon

5 km 10 km Half Marathon
Jan
18
Su

RunThrough - Finsbury Park

5 km 10 km Half Marathon
Jan
18
Su

The One in the Park - Victoria Park

10 km 10 mi Half Marathon
Jan
18
Su

Fix Events - Richmond Park Half Marathon

5 km 10 km Half Marathon
Jan
24
Sa

Saturn Running - Staines-upon-Thames

3 km 5 km ... Marathon 50 km
Jan
24
Sa

Lee Valley Velo Park Half Marathon

5 km 10 km 10 mi Half Marathon
Jan
24
Sa

Running Tribe Races

Trail Run 7 km 10 km ... 30 mi 40 mi
Jan
25
Su

Windsor Trail Run Half Marathon

Trail Run 10 km Half Marathon
Jan
25
Su

Crystal Palace Half Marathon

5 km 10 km Half Marathon
February 2026
Feb
1
Su

ATW Watford Half Marathon

10 km Half Marathon
Feb
1
Su

Victoria Park Half Marathon

5 km 10 km Half Marathon
Feb
6
Fr

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 50 km 7 hr
Feb
7
Sa

Saturn Running - Staines-upon-Thames

3 km 5 km ... 50 km 100 km
Feb
7
Sa

Run Dorney Lake Marathon

5 km 10 km Half Marathon
Feb
14
Sa

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... Marathon 50 km
Feb
14
Sa

Saturn Running - Staines-upon-Thames

3 km 5 km ... 50 km 7 hr
Feb
14
Sa

RunThrough - Battersea Park

10 km Half Marathon