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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

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+

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8 events · 13 races

Dragon's Back Race

Conwy Castle · Eryri / Snowdonia
7 Sept 2026 to 12 Sept
380km over 6 days · Choose your own, roughly half of each day · 137km over 2 days · 110km over 2 days16,600mMountainousMountain, Fell150 to 399 runnersFirst come first servedEntry open
Entry details confirmed with the organiser on 15 August 2026.

William Wallace Ultra

Stirling Cricket Club, Royal Stuart Way, Stirling FK7 7WS · Central Belt
10 Oct 2026
1,289m per lapRollingTrail50 to 149 runnersFirst come first servedDate unknown
Entry details as published by the organiser, checked 15 August 2026.

Backyard Ultra World Team Championships (United Kingdom)

Sherwood Pines Forest Park, Edwinstowe · Midlands
17 Oct 2026
Backyard, 15 selected runnersTrail, ForestUnder 50 runnersInvitationalQualifierEntries closed
Entry details confirmed with the organiser on 15 August 2026.

Country to Capital

Wendover · Chilterns
9 Jan 2027
43 miles419mFlatCanal & towpath, Trail150 to 399 runnersFirst come first servedDate unknown
Provisional, based on last year. We will confirm when the organiser publishes.

The Hardmoors 55

Guisborough · North York Moors · Hardmoors
20 Mar 2027
55 miles2,700mMountainousTrail, Moorland150 to 399 runnersFirst come first servedEntry open
Entry details confirmed with the organiser on 15 August 2026.

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.

West Highland Way Race

Milngavie · Central Belt
19 Jun 2027
95 miles4,500mHillyTrail, Moorland150 to 399 runnersBallotQualifierBallot opens in 47d
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