Ultra runs in UK in May 2026
Find ultra runs in UK in May 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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Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 30 - Sun 31 May
- £45-£75
Lake District Running Festival | Grasmere 24hr Ultra
Push your limits on a stunning 24-hour Lake District loop over 5K. Run solo or in a team to complete as many laps as possible in an unforgettable test of endurance and spirit, as part of the festival.
- 24 hrs trail running
- Mon 25 May
- £15-£29
Dun Holm Challenge | Day 5
Whether you are a Durham resident, you just love the area, or you fancy running along the River Wear with views of the Cathedral, then this is the run for you! Durham-themed medal too.
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Fri 29 May
- £15-£27
Midweek Medal Madness | Leons Birthday Run
Come and join this May Midweek Medal Madness event, where runners will also be celebrating Leon's Birthday!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 30 May
- £14-£34
Rocky at 50 Run | Wales
Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 30 May
- £67
The Telford T50 Trail Run
Take on the amazing Telford T50 pathway taking in so many special and interesting places in Telford. From the world-famous Ironbridge to the heights of the Wrekin, through past industrial areas.
- 50 miles trail running
- Sat 30 - Sun 31 May
- £45-£75
Lake District Running Festival | Grasmere 24hr Ultra
Push your limits on a stunning 24-hour Lake District loop over 5K. Run solo or in a team to complete as many laps as possible in an unforgettable test of endurance and spirit, as part of the festival.
- 24 hrs trail running
- Sun 31 May
- £27-£38
Circuit Du Sore Legs
In its sixth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?
- 5K run
- 10K run
- Half marathon
- Marathon
- 50K ultra run
- + 1 more race
- Sun 3 May
- £28-£77
Tempo Trail Races
- 100K ultra run 2
- 10K run
- Half marathon
- Marathon
- Ultra run 2
- Sun 3 May
- £52-£54
Marlborough Downs Challenge | 33 Mile
- 33 miles trail running
- Mon 4 May
- £56
BigWayRound - Winchester | 50K Ultra Marathon
- 50 km trail running
- Sat 9 - Sun 10 May
- £35-£80
Goring Gap Trails
- Ultra run 2
- Long distance walk
- Short walk 2
- Half marathon
- Sat 9 May
- £93-£95
Cateran Trail Ultramarathon
- 55 miles trail running + 7450 ft ascent
- Sat 9 May
- £60
Westcountry Ultra Flat 50 Miler
- 50 miles trail running + 2128 ft ascent
- Sat 9 May
- £71
Endurancelife | Exmoor | Ultra
- 32.6 miles trail running + 6785 ft ascent