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Flat Half marathons in South East in Autumn
Find flat half marathons in South East in Autumn - 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 27 Sep 2026
- £25-£27
Folkestone, Kent, UK
Folkestone Rotary Half Marathon
This ever popular race promises amazing coastal views and a relatively flat coastal promenade run with real PB potential.
- Chip timing
- Enter online
- Flat
- PB
- Age 17 & over
- 13.1 miles road running + 469 ft ascent
- Sun 11 Oct 2026
- £15-£117
- 7 charities
Oxford, Oxfordshire, UK
Oxford Half Marathon
Runners will enjoy the fast, flat and beautiful route through University Parks and the historic Oxford City Centre whilst celebrating running and movement with entertainment and cheering fans!
- Carbon neutral
- Venue accessible
- Recycling
- Newcomers
- Entertainment
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Fancy dress
- Event village
- Urban
- Park
- Sustainability policy
- Public transport links
- Age 16 & over
- 13.1 miles road running
- Sun 25 Oct 2026
- £37.50-£39.50
Lymington, Hampshire, UK
Wight Lines
Enjoy stunning coastal views on this flexible-distance run at Milford on Sea, following an out-and-back route beside Sturt Pond and the Isle of Wight — perfect for all abilities.
- Newcomers
- Enter online
- Flat
- Event village
- Coast
- Public transport links
- Age 18 & over
- 7 hrs trail running + 47 ft ascent
- Sun 13 Sep 2026
Brockenhurst, Hampshire, UK
The Garmin New Forest Marathon | Half Marathon
- 13.1 miles multi terrain running + 150 ft ascent