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Half Marathon Calendar near Brentwood 2025-2026

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Explore the top half marathons near Brentwood for 2025-2026! We've gathered 72 exciting races in the area. Check out our detailed list below to find your next local race.

August 2025
Aug
9
Saturday

Thames Meander Summer

Trail Run 10 km 21 km 42 km
Aug
10
Sunday

Richmond Park Half Marathon

21 km
Aug
10
Sunday

The Cold Norton Charity Summer Half Marathon Trail Event

Trail Run 10 km 13 mi
Aug
17
Sunday

Fix Events - Richmond Park Half Marathon

5 km 10 km 21 km
Aug
23
Saturday

RunThrough - Lee Valley VeloPark

5 km 10 km 10 mi 21 km
Aug
24
Sunday

Woldingham Marathon

Trail Run 21 km 42 km
September 2025
Sep
7
Sunday

RunUk - Wimbledon Half Marathon

10 km 21 km
Sep
7
Sunday

The Big Half - London

21 km
Sep
7
Sunday

Fix Events - Richmond Park Half Marathon

5 km 10 km 21 km
Sep
14
Sunday

Midnight Half, Full and Ultra Marathon

21 km 42 km
Sep
14
Sunday

Basildon Half Marathon

21 km
Sep
14
Sunday

Springfield Striders - Pleshey & Essex Half Marathon

21 km
Sep
14
Sunday

Thaxted Trail Marathon

Trail Run 21 km 42 km
Sep
21
Sunday

Richmond Park Half Marathon

21 km
Sep
28
Sunday

ATW Welwyn Half Marathon

10 km 21 km
Sep
28
Sunday

Richmond Park Half Marathon

Trail Run 21 km
Sep
28
Sunday

Ealing Half Marathon

21 km
October 2025
Oct
4
Saturday

Victoria Park Half Marathon

5 km 10 km 21 km
Oct
5
Sunday

Thames Meander Autumn

Trail Run 10 km 21 km 42 km
Oct
5
Sunday

Run Kent-Tonbridge Half Marathon

5 km 10 km 21 km
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