Ultramarathons, or ultras, are any running races beyond the standard marathon distance of 26.2 miles (or 42.2k). The most common ultra distances are 50k, 100k, 50 miles, or 100 miles, but each event is unique in terms of distance and terrain. The International Association of Athletics Federation recognises world records at ultramarathon events that have a distance of 100km. There are even 24hr ultramarathons, where the distance is unlimited, or multiday ultras, where the distance can extend beyond 1000km. There are a couple of city-based ultramarathons, but most ultras make the most of the UK's stunning scenery and countryside. A lot of these events go off-road and require trail-running over difficult terrain with steep climbs or along rugged coastlines. The Race to the Stones is one of the UK's best and most popular ultra marathons, taking in 100km of the historic Ridgeway. Or there is the famous Dragon's Back Race, which takes place over 5 days, taking runners from North to South Wales and requiring ascents adding up to twice the elevation of Mount Everest.
160events found
18
Sun, Oct 18, 2026
Ely, GB • Run 10km - Run 8 hours and 30 minutes
7
Sat, Nov 7, 2026
Aldershot, GB • Hike 36km - Run 76km
13
Sun, Dec 13, 2026
Brandon, GB • Run 5km - Run 27mi
19
Sat, Dec 19, 2026
Bury Saint Edmunds, GB • Run 5km - Run 6 hours
30
Wed, Dec 30, 2026
Walton-on-Thames, GB • Run 5km - Run 7 hours
1
Fri, Jan 1, 2027
Staines-upon-Thames, GB • Run 5km - Run 7 hours
23
Sat, Jan 23, 2027
King's Lynn, GB • Run 5km - Run 50km
21
Sun, Feb 21, 2027
Brandon, GB • Run 5km - Run 27mi
5
Fri, Mar 5, 2027
London, GB • Hike 22mi - Run 44mi
20
Sat, Mar 20, 2027
Welwyn Garden City, GB • Run - Run 50mi
4.8(166)
20
Sat, Mar 20, 2027
Manchester, GB • Run 8 hours - Run 16 hours
4.8(92)
26
Fri, Mar 26, 2027
Bury Saint Edmunds, GB • Run 6 hours - Run 6 hours
8
Sat, May 8, 2027
Abergavenny, GB • Run 100km - Run 100mi
27
Sat, Jun 27, 2026
Hexham, GB • Swim 1.2mi - Bike 112mi
27
Sat, Jun 27, 2026
Buntingford, GB • Run 5km - Run 50km
4
Sat, Jul 4, 2026
Abergavenny, GB • Run 15mi - Run 30mi
5
Sun, Jul 5, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
8
Wed, Jul 8, 2026
Llanidloes, GB • Run 27mi
9
Thu, Jul 9, 2026
Newtown, GB • Run 45mi
10
Fri, Jul 10, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
11
Sat, Jul 11, 2026
Barmouth, GB • Run 100mi
11
Sat, Jul 11, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
11
Sat, Jul 11, 2026
Machynlleth, GB • Run 100km
24
Fri, Jul 24, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
1
Sat, Aug 1, 2026
Pentre Dolau Honddu, GB • Run 50mi
1
Sat, Aug 1, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
6
Thu, Aug 6, 2026
Kemble, GB • Run 186mi
8
Sat, Aug 8, 2026
Kingston upon Thames, GB • Run 47mi
5.0
9
Sun, Aug 9, 2026
Kingston upon Thames, GB • Run 33mi
9
Sun, Aug 9, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
14
Fri, Aug 14, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
15
Sat, Aug 15, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
21
Fri, Aug 21, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
30
Sun, Aug 30, 2026
Old Elvet, GB • Run 5km - Run 6 hours and 32 minutes
5
Sat, Sep 5, 2026
Ystrad Mynach, GB • Run 15mi - Run 30mi
12
Sat, Sep 12, 2026
Rhayader, GB • Run 100mi
12
Sat, Sep 12, 2026
Wadhurst, GB • Run 10km - Run 50km
4.3
12
Sat, Sep 12, 2026
Rhayader, GB • Run 100km
13
Sun, Sep 13, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
18
Fri, Sep 18, 2026
Egham, GB • Run 5km - Run 50km
19
Sat, Sep 19, 2026
Bury Saint Edmunds, GB • Run 5km - Run 6 hours
4.8(6)
2
Fri, Oct 2, 2026
Egham, GB • Run 5km - Run 50km
3
Sat, Oct 3, 2026
Aberdare, GB • Run 5km - Run 7 hours
4
Sun, Oct 4, 2026
Staines-upon-Thames, GB • Run 5km - Run 50km
11
Sun, Oct 11, 2026
Old Elvet, GB • Run 5km - Run 6 hours and 32 minutes
