South East (England) close

Marathon Calendar South East (England) 2025-2026

Header image
Monthly updates for South East (England)

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

Explore the best marathons in South East (England) for 2025-2026! Our updated list features 121 exciting races across the region. Find your next race in South East (England) below and join the running community at these great events!

December 2025
Dec
25
Th

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... Marathon 50 km
Dec
25
Th

Saturn Running - Egham

Trail Run 3 km 5 km ... Marathon 50 km
Dec
31
We

Phoenix Running - Ardingly

Trail Run 5 km 10 km Half Marathon Marathon
January 2026
Jan
1
Th

Saturn Running - Staines-upon-Thames

3 km 5 km ... Marathon 50 km
Jan
1
Th

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... Marathon 50 km
Jan
3-4
Sa - Su

FA Cup Run Marathons

Half Marathon Marathon
Jan
3
Sa

Rhino Run - Wraysbury

Trail Run 5 km 10 km ... Marathon 6 hr
Jan
9
Fr

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 50 km 7 hr
Jan
9
Fr

Saturn Running - Midweek Chasing Numbers

3 km 5 km ... 50 km 7 hr
Jan
9
Fr

Phoenix Fridays

Backyard Ultra 5 km 10 km Half Marathon Marathon
Jan
10
Sa

Saturn Running - Staines-upon-Thames

3 km 5 km ... Marathon 50 km
Jan
17
Sa

Phoenix Running - Walton-on-Thames

Trail Run 5 km 10 km Half Marathon Marathon
Jan
18
Su

South Downs & Arundel Winter Trails

Trail Run 15 mi Marathon
Jan
18
Su

Phoenix Running - Southwater

Trail Run 5 km 10 km Half Marathon Marathon
Jan
23
Fr

Phoenix Fridays

Backyard Ultra 5 km 10 km Half Marathon Marathon
Jan
24
Sa

Saturn Running - Staines-upon-Thames

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

Running Tribe Races

Trail Run 7 km 10 km ... 30 mi 40 mi
Jan
31
Sa

Phoenix Running - Hampshire

Backyard Ultra 3 mi 13 mi 26 mi 29 mi
February 2026
Feb
5-8
Th - Su

Enigma Quadzilla

Marathon
Feb
6
Fr

Saturn 7 Hour Time Challenge - Staines-upon-Thames

3 km 7 km ... 50 km 7 hr