113
Flat Half marathons in UK
Find flat half marathons in UK in 2025/2026 - 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 23 Nov
Walton-on-Thames, Surrey, UK
Riverside Marathon & Half Marathon | Half Marathon
- 13.1 miles trail running
- Sun 23 Nov
Towcester, Northamptonshire, UK
Run Fest Silverstone | Half Marathon
- 13.1 miles road running
- Sun 7 Dec
Chichester, West Sussex, UK
Running GP at Goodwood Motor Circuit
- 5K run
- 10K run
- Half marathon 2
- Marathon
- 50K ultra run
- Sun 7 Dec
Milton Keynes, Buckinghamshire, UK
Milton Keynes Winter Half Marathon
- 13.1 miles road running + 415 ft ascent
- Sun 21 Dec
Southsea, Hampshire, UK
Portsmouth Coastal Waterside Marathon Events | Festive Half Marathon
- 13.1 miles multi terrain running
- Sun 28 Dec
Walton-on-Thames, Surrey, UK
Year End Marathon & Half Marathon | Half Marathon
- 13.1 miles trail running
- Sun 4 Jan 2026
Southport, Merseyside, UK
Adventure Coast Southport Half Marathon & 10K | Half Marathon
- 13.1 miles road running + 33 ft ascent
- Sun 11 Jan 2026
Northwich, Cheshire, UK
Montane Delamere Trail 10 & 13 | Half Marathon
- 13.1 miles trail running + 973 ft ascent
- Sun 1 Feb 2026
Cardiff, UK
The Cardiff 5K, 10K and Half Marathon Winter Warmer Run | Half Marathon
- 13.1 miles road running
- Sat 7 - Sun 8 Feb 2026
Exeter, Devon, UK
Exeter Half Marathon and Riverside 5 Miles
- Half marathon 2
- Fun run
- Sat 7 Feb 2026
Newcastle upon Tyne, Tyne and Wear, UK
The Newcastle 5K, 10K and Half Marathon Winter Warmer Run | Half Marathon
- 13.1 miles road running + 92 m ascent
- Sat 7 Feb 2026
Dunbar, East Lothian, UK
Fox Trail Winter Running Series | Race 4 | Half Marathon
- 13.1 miles trail running
- Sun 8 Feb 2026
Glasgow, Glasgow City, UK
The Glasgow 5K, 10K and Half Marathon Winter Warmer Run | Half Marathon
- 13.1 miles road running
- Sun 8 Feb 2026
Llanelli, Dyfed, UK
Llanelli 10K & Half Marathon | Half Marathon
- 13.1 miles road running + 58 m ascent
- Sun 22 Feb 2026
York, North Yorkshire, UK
The York 5K, 10K and Half Marathon Winter Warmer Run | Half Marathon
- 13.1 miles trail running + 24 m ascent
- Sun 22 Feb 2026
Wokingham, Berkshire, UK
David Cliff Wokingham Half Marathon | Half Marathon
- 13.1 miles road running
- Sat 28 Feb 2026
Liverpool, Merseyside, UK
The Liverpool 5K, 10K and Half Marathon Winter Warmer Run | Half Marathon
- 13.1 miles road running + 72 m ascent
- Sun 1 Mar 2026
London, UK
London Half and 10K Presented by TREK | Half Marathon
- 21.1 km road running + 117 m ascent
- Sun 8 Mar 2026
Burry Port, Dyfed, UK
Great Welsh Marathon Events | Half Marathon
- 13.1 miles road running + 240 ft ascent
- Sun 8 Mar 2026
Tonbridge, Kent, UK
Lambert & Foster Paddock Wood Half Marathon
- 13.1 miles road running
- Sun 15 Mar 2026
Milton Keynes, Buckinghamshire, UK
Milton Keynes Festival of Running | Half Marathon
- 13.1 miles road running
- Sun 22 Mar 2026
Milton Keynes, Buckinghamshire, UK
Twin Lakes 20 | 20 Mile
- 20 miles multi terrain running
- Sun 22 Mar 2026
Carlisle, Cumbria, UK
Run Carlisle Half Marathon and 10K | Half Marathon
- 13.1 miles road running