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Half Marathon Calendar near Watford 2025-2026

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Explore the top half marathons near Watford for 2025-2026! We've gathered 171 exciting races in the area. Check out our detailed list below to find your next local race.

February 2026
Feb
28
Saturday

Saturn Running - Staines-upon-Thames

3 km 4 mi ... 49 km 50 km
March 2026
Mar
1
Sunday

RunThrough - London Half Marathon

10 km 21 km
Mar
6
Friday

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 50 km 7 hr
Mar
7
Saturday

RunThrough - Battersea Park

21 km
Mar
8
Sunday

Leith Hill Half Marathon

Trail Run 13 mi
Mar
8
Sunday

Victoria Park Half Marathon

5 km 10 km 21 km
Mar
8
Sunday

Run Dorney Lake Half Marathon

5 km 10 km 21 km
Mar
14
Saturday

Saturn Running - Staines-upon-Thames

13 mi
Mar
14
Saturday

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 42 km 50 km
Mar
15
Sunday

Hampton Court Palace Half Marathon

21 km
Mar
21
Saturday

ZigZag - Moo-rathon, Calf and Hen K at the Farm

Trail Run 10 km 21 km 42 km
Mar
21
Saturday

Saturn Running - Staines-upon-Thames

13 mi 16 mi 18 mi 22 mi
Mar
21
Saturday

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 42 km 50 km
Mar
22
Sunday

Surrey Half Marathon

5 km 21 km
Mar
22
Sunday

Reading Half Marathon

21 km
Mar
22
Sunday

ATW Run Fest at Lee Valley

10 km 21 km
Mar
22
Sunday

Windsor Trail Run

Trail Run 10 km 21 km
Mar
28
Saturday

Run the Wild Half Marathon - Spring Edition

Trail Run 21 km
April 2026
Apr
2
Thursday

Saturn Running - Staines-upon-Thames

3 km 7 km ... 42 km 50 km
Apr
2
Thursday

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 42 km 50 km
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