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Runs in Hertfordshire in October 2026
Find runs in Hertfordshire in October 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Sun 4 Oct 2026
- FREE-£33
- Early bird
Welwyn Garden City, Hertfordshire, UK
ATW Welwyn Half Marathon & Fun Run
The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park with an ideal, traffic-free, disused railway line in between.
Early bird on now
- Families
- Recycling
- Newcomers
- Event village
- Park
- Sustainability policy
- All ages
- Fun run
- Half marathon
- 10K run
- Sun 25 Oct 2026
- £35
Bishop's Stortford, Essex, UK
Stort30
A stunningly pretty 30-mile out-and-back ultra on the border of Hertfordshire and Essex along the River Stort and Lee navigation. A great first foray into ultra running or a fast competitive race.
- Newcomers
- Chip timing
- Enter online
- Flat
- Event village
- Rural
- Age 18 & over
- 30 miles trail running + 188 ft ascent