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 1 to 100 of 281
The Severn Challenge
Wednesday, 8 July 2026 to Sunday, 12 July 2026Hafren to Bristol, UK
Swan Challenge: 6 Hour Running Race
Friday, 10 July 2026Coombe Abbey Park, Coventry, UK
Beat the Ferry 50K & Studland 25K
Saturday, 11 July 2026Knoll Beach, Studland, Dorset, UK
Black Mountains Ultra, Marathon, Half Marathon
Saturday, 11 July 2026Longtown, Hereford, UK
Lakeland Trails Ultra
Saturday, 11 July 2026Ambleside, UK
Maverick Chilterns Trail Run
Saturday, 11 July 2026Princes Risborough, Buckinghamshire, UK
The Sting Backyard Ultra
Saturday, 11 July 2026Richmond, North Yorkshire, UK
Thetford 24 Hour
Saturday, 11 July 2026Thetford Forest, Brandon, UK
Yr Wyddfa / Snowdon 24
Saturday, 11 July 2026Llanberis, Caernarfon, UK
Eight Stations Ultra
Sunday, 12 July 2026Whitby to Pickering, UK
Rasselbock Marathon, Half & Ultra
Sunday, 12 July 2026Sherwood Pines Forest, Nottinghamshire, UK
Snowdonia Trail Marathon Eryri
Sunday, 12 July 2026Llanberis, Caernarfon, UK
BigHeat Trails (FIRE)
Saturday, 18 July 2026 to Sunday, 19 July 2026Lurgashall, Petworth, West Sussex, UK
Castle to Castle Ultra
Saturday, 18 July 2026Clitheroe Castle to Lancaster Castle, Lancashire, UK
Dragon Coastal Ultramarathons
Saturday, 18 July 2026 to Sunday, 19 July 2026Rhossili Bay to Cardiff Bay, Wales, UK
Gower Peninsula Ultra Challenge
Saturday, 18 July 2026 to Sunday, 19 July 2026Penrice, Swansea, Wales, UK
Highlander Last One Standing
Saturday, 18 July 2026Murthly, Perthshire, UK
Rabbit Run Wales
Saturday, 18 July 2026Merthyr Mawr, Bridgend, South Wales, UK
Rat Race 100 - Edinburgh to Glamis
Saturday, 25 July 2026 to Monday, 27 July 2026Edinburgh to Glamis, Scotland, UK
Rollin' 100 Ultramarathon
Saturday, 25 July 2026Bishops Castle, Shropshire, UK
South West Coast 50 Ultra Challenge
Saturday, 25 July 2026Dunster, Minehead, Somerset, UK
The Rasselbock 545
Saturday, 25 July 2026Horspath Athletics Track, Oxford, UK
Ultra X Wales
Saturday, 25 July 2026 to Sunday, 26 July 2026Abergavenny, Monmouthshire, Wales, UK
Wirral Backyard Ultra
Saturday, 25 July 2026Thurstaston, Wirral, UK
Yorkshire Wolds Ultra
Saturday, 25 July 2026Pocklington, Yorkshire, UK
Isaac’s Tea Trail Ultra
Saturday, 1 August 2026Allendale Town, Hexham, UK
MindOverMoors - Esk Valley Way Ultra
Saturday, 1 August 2026Castleton to Whitby, North Yorkshire, UK
North Downs 50 Ultra Challenge
Saturday, 1 August 2026Guildford, Surrey, UK
River Tay Way Ultra
Saturday, 1 August 2026Loch Tay to Perth, Scotland, UK
She Strides Ultra
Saturday, 1 August 2026Hebden Bridge, West Yorkshire, UK
MTC Cotswold Ultra
Thursday, 6 August 2026Kemble to Oxford, UKMTC Thames Challenge - Multi Stage
Thursday, 6 August 2026 to Sunday, 9 August 2026Cotswolds to Greenwich, UKMTC Oxford Ultra
Friday, 7 August 2026Oxford to Henley-on-Thames, UK
Brecon Beacons Trail Runs
Saturday, 8 August 2026Talybont-on-Usk, Brecon, UK
Maverick Ochil Hills Trail Run
Saturday, 8 August 2026Airthrey Castle, Stirling, UKMTC Windsor Ultra
Saturday, 8 August 2026Henley to KIngston, UK
Stour Valley Path 100K & 50K
Saturday, 8 August 2026Newmarket / Sudbury to Brantham, UK
The Ultra Loop - Temple Newsam
Saturday, 8 August 2026Temple Newsam Park, Leeds, UK
Durty Trail Weekender
Sunday, 9 August 2026Selkirk, Scottish Borders, UK
MTC Richmond Ultra
Sunday, 9 August 2026Kingston upon Thames, London, UK
Foxton Hound Ultra
Saturday, 15 August 2026Winwick, Northants, UK
SkyRun Eryri
Saturday, 15 August 2026Rhyd-Ddu, Caernarfon, Wales, UK
Pierrepont Plod - Summer
Sunday, 16 August 2026Holme Pierrepont, Nottingham, UK
Two Tunnels Railway Races: August
Sunday, 16 August 2026Bath, Somerset, UK
Run the Borders
Saturday, 22 August 2026Melrose, Scottish Borders, UK
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
South Coast Ultra Challenge
Saturday, 5 September 2026 to Sunday, 6 September 2026Eastbourne to Arundel, UK
Tapyard Ultra
Saturday, 5 September 2026Ramsbury Brewery, Wiltshire to Renegade Brewery, Berkshire, 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
Pilgrim's Reckoning
Saturday, 12 September 2026Bedford, UK
Robin Hood 100
Saturday, 12 September 2026South Wheatley, Retford, Nottinghamshire, UK
Suffolk Coastal Path 50K
Saturday, 12 September 2026Lowestoft to Aldeburgh, Suffolk, UK
Thames Path Ultra Challenge
Saturday, 12 September 2026 to Sunday, 13 September 2026Putney to Henley-on-Thames, 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
Shrewsbury 50K Ultra
Saturday, 19 September 2026Church Stretton to Shrewsbury, Shropshire, UK
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
Chiltern 50 Ultra Challenge
Saturday, 26 September 2026Henley-on-Thames, UK
Gower Coastal Trail Races
Saturday, 26 September 2026Gower Peninsula, Wales, UK
Ladybower Reservoir 52K Ultra & 22K
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
Events 1 to 100 of 281