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Trail Half marathons in South East

Find trail half marathons in South East 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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Event listings

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Sun 30 Nov

Reading, Berkshire, UK

Mapledurham 10 & Half | Half Marathon

13.1 miles trail running + 319 m ascent

Sun 28 Dec

Walton-on-Thames, Surrey, UK

Year End Marathon & Half Marathon | Half Marathon

13.1 miles trail running

Sat 7 Feb 2026

Portsmouth, Hampshire, UK

Portsmouth Coastal Half Marathon

13.1 miles multi terrain running

Sun 8 Feb 2026

Henley-on-Thames, Buckinghamshire, UK

The One in the Woods | Henley | Half Marathon

13.1 miles trail running

Sun 22 Feb 2026

Milton Keynes, Buckinghamshire, UK

The Milton Keynes 5K, 10K and Half Marathon Winter Warmer Run | Half Marathon

13.1 miles trail running + 124 m ascent

Sun 22 Feb 2026

Romsey, Hampshire, UK

Awbridge Half Marathon & 10 Mile | Half Marathon

13.1 miles trail running

Sat 7 Mar 2026

Eastbourne, East Sussex, UK

EnduranceLife - Sussex | Half Marathon

13.1 miles trail running + 2185 ft ascent

Sun 8 Mar 2026

Dorking, Surrey, UK

Leith Hill Half Marathon

13.1 miles trail running + 1778 ft ascent

Sun 22 Mar 2026

Milton Keynes, Buckinghamshire, UK

Twin Lakes 20 | 20 Mile

20 miles multi terrain running

Sun 29 Mar 2026

Arundel, West Sussex, UK

Springtide Half Marathon

13.5 miles trail running + 1175 ft ascent

Sun 10 May 2026

Reading, Berkshire, UK

Goring Gap Trails | Run - Half Marathon

13.1 miles trail running + 102 m ascent

Sat 23 May 2026

Eastbourne, East Sussex, UK

Seven Sisters Half Marathon

13.1 miles trail running + 2057 ft ascent

Sun 5 Jul 2026

Aylesbury, Buckinghamshire, UK

Chiltern Ridge Half Marathon

21.3 km trail running + 526 m ascent

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