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Marathon Calendar near Harrow 2025-2026

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Explore the top marathons near Harrow for 2025-2026! We've gathered 91 exciting races in the area. Check out our detailed list below to find your next local race.

September 2026
Sep
5
Sa

Phoenix Running - Walton-on-Thames

Trail Run Half Marathon Marathon
Sep
12
Sa

The Shere 42k Multi Terrain Event

Trail Run 10 km Half Marathon Marathon
Sep
26
Sa

Run Dorney Lake Marathon

5 km 10 km Half Marathon Marathon
October 2026
Oct
4
Su

Thames Meander Autumn

Trail Run 10 km Half Marathon Marathon
Oct
24
Sa

RunThrough - Battersea Park

Half Marathon Marathon
November 2026
Nov
1
Su

Wendover Woods Marathon

Trail Run 10 km Half Marathon Marathon
Nov
6
Fr

Phoenix Running - Walton-on-Thames

Trail Run 5 km 10 km Half Marathon 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
8
Su

Phoenix - Remembrance Day Marathon

Half Marathon Marathon
Nov
29
Su

Phoenix Running - Walton-on-Thames

Trail Run 5 km 10 km ... Marathon 7 hr