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Mountainous 100 mile ultra runs
Find mountainous 100 mile ultra runs near me 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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- Sat 11 - Sun 12 Jul 2026
- £129.99-£319.99
Caernarfon, Gwynedd, UK
Black Diamond Yr Wyddfa Snowdon24
Yr Wyddfa (Snowdon) is the highest mountain in England and Wales. Your challenge is to ascend and descend as many times as possible in 24 hours - solo or as a relay team.
- Chip timing
- Enter online
- Mountainous
- Traffic free
- Relay
- Age 18 & over
- 24 hrs trail running + 3182 ft ascent
- Fri 18 - Sun 20 Sep 2026
- £160-£220
Fort William, Highland, UK
Skyline Scotland | Skyline Scotland 100M
Climb from Glen Nevis to Sgurr an Iubhair, traverse remote Corrour and Loch Ossian, then race rugged trails, forests and singletrack to a spectacular Nevis Range finish on this mountain adventure.
- Chip timing
- Enter online
- GPS tracking
- Mountainous
- Age 18 & over
- 100 miles fell running + 4600 m ascent
- Thu 26 Nov - Sat 5 Dec 2026
San José, Costa Rica
La Transtica | Extreme Race
- 122 miles trail running + 9300 m ascent