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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
RegionChilternsCornwallEast AngliaHome CountiesLake DistrictMidlandsNorth DownsNorth York MoorsSouth DownsSouth West
WhenNext 3 monthsNext 6 monthsNext 12 monthsSpringSummerAutumnWinter
EntryEntry open nowOpens in 30 daysBallotNo qualifier
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Terrain

TrailFellMountainMoorlandCoastal pathForestCanal & towpathRoad

Hilliness

FlatRollingHillyMountainous

Format

Single stageStageTimedBackyard

Entry mechanism

First come first servedBallotQualifying standardInvitational

Field size

Under 5050 to 149150 to 399400 to 9991,000+

Specific month

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

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Dates confirmed by organiser Part of a series
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3 events · 7 races

Suffolk Backyard Ultra Festival

High Lodge, Thetford Forest, Brandon · East Anglia
5 Jun 2027
4.167 mile laps, last runner standing28m per lapFlatTrail, Forest150 to 399 runnersFirst come first servedDate unknown
Entry details as published by the organiser, checked 15 August 2026.

South Downs Way 100 & 50km

Matterley Bowl, near Winchester · South Downs · Centurion
12 Jun 2027 to 13 Jun
100 miles · 50km3,800mHillyTrail, Road400 to 999 runnersFirst come first servedQualifierEntry open
Entry details as published by the organiser, checked 15 August 2026.

Solstice at the Lakes

Leybourne Lakes Country Park, Malling Rd, Snodland ME20 6JA · Home Counties
19 Jun 2027
Trail, RoadFirst come first servedDate unknown
Entry details as published by the organiser, checked 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