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UK ultra marathons

Every organised ultra in the UK, Northern Ireland and the Crown dependencies. Filter by distance, terrain, hilliness and how you actually get in.

Distance50K50 mile100K100 mile200km+Unbounded
WhereEnglandScotlandWales
WhenNext 3 monthsNext 6 monthsNext 12 monthsSpringSummerAutumnWinter
EntryEntry open nowOpens in 30 daysBallotNo qualifier
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Terrain

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Hilliness

FlatRollingHillyMountainous

Format

Single stageStageTimedBackyardRelay

Entry mechanism

First come first servedBallotApplication & selectionInvitational

Field size

Under 5050 to 149150 to 399400 to 9991,000+

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4 events · 4 races

Thames Trail Ultra

Mercure Oxford Hawkwell House Hotel, Church Way, Iffley, Oxford OX4 4DZ · Chilterns
24 Oct 2026
289m per lapof ascentFlatTrail, Coastal pathFirst come first servedEntry not yet open
Entry dates not yet known.

Country to Capital

Wendover · Chilterns
9 Jan 2027
43 miles 419mof ascentFlatCanal & towpath, Trail150 to 399 runnersFirst come first servedEntry open
Provisional, based on last year. We will confirm when the organiser publishes.

Suffolk Backyard Ultra Festival

High Lodge, Thetford Forest, Brandon · East Anglia
5 Jun 2027
4.167 mile laps, last runner standing 28m per lapof ascentFlatTrail, Forest150 to 399 runnersFirst come first servedEntry open
Entry details as published by the organiser, checked 15 August 2026.

The Wall

Carlisle Castle, Carlisle (registration at Crown and Mitre Hotel) · North East
12 Jun 2027 to 13 Jun
1,055m per lapof ascentFlatTrail, RoadFirst come first servedEntry open
Entry details confirmed with the organiser on 15 August 2026.

Related searches

Ultra marathons in ScotlandUltra marathons in the Lake District100 mile races in the UKBackyard ultras in the UKUK ultras with entry opening soonUK ultras with no qualifier neededWinter ultras in the UKSmall-field UK ultras
UK ultra marathons: the full list | Ultralist