6
100K ultra runs in UK in September 2026
Find 100k ultra runs in UK in September 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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- Fri 18 Sep
- From £86
Hope Valley, Derbyshire, UK
Peak District Challenge | Gold Ultra 100K
A hilly and challenging route showcasing the best of the Peak District for those who can maintain 4kph over 24 hours. Night navigation experience is essential.
- Enter online
- GPS tracking
- Hilly
- Age 20 & over
- 100 km trail running + 3300 m ascent
- Sat 19 - Sun 20 Sep
- £140-£200
Fort William, Highland, UK
Skyline Scotland | Skyline Scotland 100K
A runnable 100km with a Scottish Highland journey at the heart of the race experience with an exciting midnight mass start.
- Enter online
- GPS tracking
- Mountainous
- Age 18 & over
- 106 km trail running + 6350 m ascent
- Fri 11 - Sun 13 Sep
London, UK
Thames Path Ultra Challenge
- 100K ultra run 2
- 50K ultra run 2
- Trail run 4
- Charity walk 4
- Ultra run
- + 1 more race