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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 70 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
7
Sunday

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

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

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
Oct
12
Sunday

Royal Parks Half Marathon

13 mi
Oct
12
Sunday

Chelmsford Marathon & Half Marathon

21 km 42 km
Oct
12
Sunday

Richmond Park Half Marathon

21 km
Oct
12
Sunday

Richmond Autumn Riverside 10k and Half Marathon

10 km 21 km
Oct
18
Saturday

RunThrough - Battersea Park

21 km 42 km
Oct
19
Sunday

Fix Events - Richmond Park Half Marathon

5 km 10 km 21 km
Oct
19
Sunday

Stevenage Half Marathon

21 km
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