Ultra Marathons in United Kingdom
An ultramarathon or 'Ultra' is the term for any running event longer than the traditional marathon length of 42.195 kilometres (26.2 miles). Some of the most common distances are 50K, 100K and 100 miles. Ultra marathons are becoming increasingly popular, especially the off-road/trail and mountain running variants as well as the ultimate endurance event - the Last One Standing (LOS) or Backyard Ultra (BYU).
The following is a list of ultra marathons in United Kingdom.
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Events 101 to 200 of 272
The Summer Green Man Ultra (GMU)
Saturday, 22 August 2026Ashton Park School, Bristol, UK
Black Cattle Ultra
Saturday, 29 August 2026Llanthony Priory to Cardiff, UK
Dales Dazzler
Saturday, 29 August 2026Skipton, North Yorkshire, UK
Devon & Cornwall Backyard Ultra
Saturday, 29 August 2026Newnham Park, Plympton, Plymouth, UK
London Backyard Ultra
Saturday, 29 August 2026Croyden, London, UK
The Joust 6, 12 & 24 Hour
Friday, 4 September 2026 to Sunday, 6 September 2026Top Barn Campsite, Holt Health, Worcester, UK
Borders 8-hour Challenge
Saturday, 5 September 2026Newcastleton, Scottish Borders, UK
Maverick Kielder Forest Gravel Run
Saturday, 5 September 2026Hexham, Northumberland, UK
Rasselbock Backyard Ultra - Hardwick
Saturday, 5 September 2026Hardwick Hall Estate, Chesterfield, UK
Rat Race Sea to Summit - Scafell Pike
Saturday, 5 September 2026Scafell Pike, Cumbria, UK
Snowdonia Sea2Sky
Saturday, 5 September 2026Barmouth, Gwynedd, UK
City To Sea
Sunday, 6 September 2026Exeter to Babbacombe Downs, Devon, UK
GWT Trailwalker Challenge
Friday, 11 September 2026 to Sunday, 13 September 2026Queen Elizabeth Country Park to Brighton Racecourse, UK
Boudicca Way 50K Summer Ultra
Saturday, 12 September 2026Diss to Norwich, Norwich, UK
c2c Essex Ultra
Saturday, 12 September 2026Upminster/Tilbury/Benfleet to Southend-on-Sea, Greater London, UK
Lulworth Cove Trail Runs
Saturday, 12 September 2026West Lulworth, Wareham, Dorset, UK
Robin Hood 100
Saturday, 12 September 2026South Wheatley, Retford, Nottinghamshire, UK
Suffolk Coastal Path 50K
Saturday, 12 September 2026Lowestoft to Aldeburgh, Suffolk, UK
Thetford Back Yard Ultra
Saturday, 12 September 2026Thetford Forest, Brandon, UK
Ultra X England
Saturday, 12 September 2026 to Sunday, 13 September 2026Edale, Hope Valley, Derbyshire, UK
End to End Walk
Sunday, 13 September 2026Point of Ayre to the Sound, Isle of Man, UK
TrailFest Holdenby House
Sunday, 13 September 2026Holdenby House, Northampton, UK
Peak District Challenge
Friday, 18 September 2026 to Saturday, 19 September 2026Hathersage, Hope Valley, UK
Chiltern Hills Backyard Ultra 24
Saturday, 19 September 2026Bradenham, High Wycombe, UK
Hardmoors 60 Trail Ultra
Saturday, 19 September 2026Guisborough to Filey, Yorkshire, UK
High Peak 40 Challenge
Saturday, 19 September 2026Buxton, Derbyshire, UK
Lone Wolf Birmingham
Saturday, 19 September 2026 to Sunday, 20 September 2026Wyre Forest, Callow Hill, Bewdley, UK
Maverick Lakes X-Trail Run
Saturday, 19 September 2026Grasmere, Ambleside, UK
Mourne Mountain Marathon
Saturday, 19 September 2026 to Sunday, 20 September 2026Mourne Mountains, Newry, Co. Down, NI
The Cotswold Way Century & Cotswold Half Way
Saturday, 19 September 2026 to Sunday, 20 September 2026Chipping Campden to Painswick/Bath, Cotswold Way National Trail, UK
Trails & Tarmac Summer 12 Hour Back Yard Ultra
Saturday, 19 September 2026Crickhowell, Powys, Wales, UK
Triple Trail Ultra
Saturday, 19 September 2026Linton, Maidstone, Kent, UK
Turbine Backyard Ultra
Saturday, 19 September 2026Satley, Bishop Auckland, UK
BigSky Trails (AIR)
Sunday, 20 September 2026Frogham, Fordingbridge, UK
13 Valleys Ultra
Friday, 25 September 2026 to Sunday, 27 September 2026Keswick, Cumbria, UK
Mudfest Rosliston Forest - September
Friday, 25 September 2026Rosliston, Swadlincote, UK
Ochil Ultra
Friday, 25 September 2026 to Saturday, 26 September 2026Stirling to Perth, Scotland, UK
Gower Coastal Trail Races
Saturday, 26 September 2026Gower Peninsula, Wales, UK
Ladybower Reservoir 52K Ultra & 21K
Saturday, 26 September 2026Hope Showground, Hope Valley, UKRat Race Sea to Summit - Yr Wyddfa (Snowdon)
Saturday, 26 September 2026Caernarfon to Rhyd Ddu, Wales, UK
The Endless Garden Backyard Ultra
Saturday, 26 September 2026Ayot Green, Welwyn, Hertfordshire, UK
Tower to Castle Ultra
Saturday, 26 September 2026Blackpool Tower to Lancaster Castle, Lancashire, UK
Yorkshire Reservoir Dogs
Saturday, 26 September 2026Otley, West Yorkshire, UK
Kingfisher Challenge: 6 Hour Running Race
Wednesday, 30 September 2026Coombe Abbey Park, Coventry, UK
Atlantic Coast Challenge
Friday, 2 October 2026 to Sunday, 4 October 2026Upton Towans, North Cornwall, UK
Charm Bracelet 50 & 100 Ultra
Friday, 2 October 2026 to Sunday, 4 October 2026Dufton / Croft-On-Tees to Skinningrove, UK
Isle of Man Backyard Ultra
Friday, 2 October 2026Archalligan Plantation, Isle of Man, UK
Atlantic Coast 40 Miler
Saturday, 3 October 2026Upton Towans, North Cornwall, UK
London Epping Forest 50K & EcoTrail 25K
Saturday, 3 October 2026Wanstead Flats, East London, UK
Maverick South Downs Trail Run
Saturday, 3 October 2026Gravel Hill, Horndean, UK
Round Ripon Ultra
Saturday, 3 October 2026Studley Roger, Ripon, North Yorkshire, UK
Run to the Sea Bournemouth
Saturday, 3 October 2026Ringwood to Bournemouth, UKThe Hardwick Hobble - Autumn
Saturday, 3 October 2026Chesterfield, Derbyshire, UK
UK Ultra Dark Downs 50K & Half Marathon
Saturday, 3 October 2026Lewes, East Sussex, UK
UK Ultra South Downs 100 Mile
Saturday, 3 October 2026Plumpton, Lewes, East Essex, UK
Aberfoyle Trail Festival
Saturday, 10 October 2026Aberfoyle, Stirling, UK
Beat Box Hill Trails
Saturday, 10 October 2026Box Hill, Tadworth, Surrey, UK
Bennachie Ultra Marathon
Saturday, 10 October 2026Pitcaple, Inverurie, UK
EnduranceLife Suffolk
Saturday, 10 October 2026Dunwich, Saxmundham, UK
Lakes in a Day Ultra & Half
Saturday, 10 October 2026Caldbeck / Ambleside to Cartmel, Cumbria, UKLone Wolf South West
Saturday, 10 October 2026 to Sunday, 11 October 2026Haldon Forrest, Bullers Hill, Exeter, UKRat Race Sea to Summit - Ben Nevis
Saturday, 10 October 2026Ben Nevis, Scotland, UK
SkyRun The Mournes
Saturday, 10 October 2026Donard Park, Newcastle, Co. Down, NI
The Loop Ultra
Saturday, 10 October 2026Plas Dolanog, Welshpool, UK
William Wallace Running Festival
Saturday, 10 October 2026Stirling, Scotland, UK
Bath & Bristol Railway Races Autumn
Sunday, 11 October 2026Green Park, Bath, UK
Amberaid 30 & Petit Raid
Saturday, 17 October 2026Ashover Village Hall, Chesterfield, UK
Gatliff Marathon
Saturday, 17 October 2026Edenbridge, Kent, UK
Maverick Jurassic Coast X-Trail Run
Saturday, 17 October 2026Wareham, Dorset, UK
Ultra Tour Yorkshire Dales
Saturday, 17 October 2026 to Sunday, 18 October 2026Grassington, Skipton, UK
Ely Runfest
Sunday, 18 October 2026Ely, Cambridgeshire, UK
The Ultra Loop - Delamere
Sunday, 18 October 2026Delamere Forest, Frodsham, UK
Beachy Head Marathon, Ultra & 10K
Saturday, 24 October 2026Eastbourne, UK
EnduranceLife North York Moors
Saturday, 24 October 2026Ravenscar, North Yorkshire, UK
Jedburgh Three Peaks Ultra
Saturday, 24 October 2026Jedburgh, Scottish Borders, UK
Nidderdale Way Trail Race & Ultra
Saturday, 24 October 2026Pateley Bridge, North Yorkshire, UK
Tentsmuir Forest 8-hour Challenge
Saturday, 24 October 2026Tentsmuir Forest, Scotland, UK
Thames Trail Ultra
Saturday, 24 October 2026Iffley, Oxfordshire to Henley on Thames, UK
Running Tribe Race: October
Sunday, 25 October 2026Chalfont Park Sports Club, Chalfont St Peter, Gerrards Cross, UK
Stort 30 Trail Ultra
Sunday, 25 October 2026Bishop’s Stortford, Hertfordshire, UK
Black Beacon Mountain Races
Friday, 30 October 2026 to Sunday, 1 November 2026Hay-on-Wye, Hereford, Wales, UK
Chiltern Ridge Winter 50K
Saturday, 31 October 2026Berkhamsted, UK
Endure the Moor
Saturday, 31 October 2026Gosforth, Newcastle upon Tyne, UKThe Rosliston Rumble - Autumn
Sunday, 1 November 2026Rosliston, Swadlincote, UK
Beacons Ultra, Marathon & Half Marathon
Saturday, 7 November 2026Talybont-on-Usk, Brecon, Powys, UK
Coast2Coast Winter Ultra
Saturday, 7 November 2026Llithfaen, Pwllheli, North Wales, UK
Dart Deliverance 50K, Marathon & Half Marathon
Saturday, 7 November 2026Kingswear/Totnes to Dartmouth, Devon, UK
EnduranceLife Gower
Saturday, 7 November 2026Oxwich Bay, Gower, Swansea, UK
Off The Tarmac Ultra Marathon
Saturday, 7 November 2026Georgetown, Merthyr Tydfil, Wales, UK
The Druid's Challenge
Friday, 13 November 2026 to Sunday, 15 November 2026Tring, Hertfordshire to Wroughton, Wiltshire, UK
Five Trails Ultra & 3 Trails Half
Saturday, 14 November 2026Graffham, Petworth, UK
Slate Trail Ultra
Saturday, 14 November 2026Porth Penrhyn, Bangor, Wales, UK
Wharfedale Skyline Trail Race & Ultra
Saturday, 14 November 2026Otley, West Yorkshire, UK
Winter Weavers' Way Ultras
Saturday, 14 November 2026Great Yarmouth / Stalham to Cromer, Norwich, UK
Winter Wirral Ultra
Saturday, 14 November 2026Hooton, Wirral, UK
Dormouse Challenge: 6 Hour Running Race
Friday, 20 November 2026Salcey Forest, Northampton, UK
North Chilterns 50K
Saturday, 21 November 2026Putteridge Bury, Luton, UKMudfest Rosliston Forest - November
Friday, 27 November 2026Rosliston, Swadlincote, UKRunning Tribe Race: November
Saturday, 28 November 2026Chalfont St Peter Community Centre, Chalfont St Peter, Gerrards Cross, UK
Sidlaw Ultra
Saturday, 28 November 2026Glamis Castle to Scone Palace, Scotland, UK
Events 101 to 200 of 272