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 264
Hardwolds 80 Trail Ultra
Saturday, 22 November 2025 to Sunday, 23 November 2025Hessle to Filey, Yorkshire, UK
Sidlaw Ultra
Saturday, 29 November 2025Glamis Castle to Scone Palace, Scotland, UK
Running Tribe Race: November
Sunday, 30 November 2025Chalfont Park Sports Club, Chalfont St Peter, Gerrards Cross, UK
UK Ultra Winter on the Downs
Friday, 5 December 2025 to Saturday, 6 December 2025Eastbourne, UK
EnduranceLife Dorset
Saturday, 6 December 2025Swanage, Dorset, UK
Hurtwood 50K Ultra
Sunday, 7 December 2025Dorking Sports Centre, Dorking, UK
Celtic Trail Races
Saturday, 13 December 2025Aberdare, Rhondda Cynon Taff, Wales, UK
Christmas Cracker
Saturday, 13 December 2025Otley, North Yorkshire, UKRunning Tribe Race: December
Sunday, 14 December 2025Chalfont Park Sports Club, Chalfont St Peter, Gerrards Cross, UK
Christmas Canter
Saturday, 20 December 2025Sampford Peverell, Tiverton, UK
Portsmouth Coastal Waterside Marathon
Sunday, 21 December 2025Portsmouth, Southsea, UK
Winter Wanderlust 50K Ultra
Sunday, 21 December 2025Detling to Wye, Kent, UK
Winter X
Sunday, 28 December 2025The Meon Hall, Meonstoke, Southampton, UK
Hardmoors 30 Trail Ultra
Saturday, 3 January 2026Robin Hood’s Bay, Yorkshire, UK
Country to Capital Ultra Marathon
Saturday, 10 January 2026Wendover to London, UK
EnduranceLife North Cornwall
Saturday, 10 January 2026Polzeath, North Cornwall, UK
Mudfest Rosliston Forest - January
Friday, 16 January 2026Rosliston, Swadlincote, UK
Green Gateways Trail Race
Saturday, 17 January 2026Otley, West Yorkshire, UK
Crocodile Challenge: 6 Hour Running Race
Friday, 23 January 2026Ryton Pools Country Park, Coventry, Warwickshire, UK
EnduranceLife South Devon
Saturday, 24 January 2026Beesands, Kingsbridge, UK
The Clumber Lakeside - Winter
Saturday, 24 January 2026 to Sunday, 25 January 2026Clumber Park, Worksop, UKRunning Tribe Race: January
Sunday, 25 January 2026Chalfont St Peter, Gerrards Cross, UK
Longbridge Backyard Ultra - Winter
Friday, 30 January 2026Litlington, East Sussex, UK
Peddars Way Ultra Marathon
Sunday, 1 February 2026Knettishall Heath to Holme Next-The-Sea, UK
Squirrel Challenge 6 Hour Running Race
Wednesday, 4 February 2026Daventry, Northamptonshire, UK
Harrogate Hustle Trail Race
Saturday, 7 February 2026Pannal, Harrogate, North Yorkshire, UKThe Hardwick Hobble - Winter
Saturday, 7 February 2026 to Sunday, 8 February 2026Chesterfield, Derbyshire, UK
The Pilgrim Challenge
Saturday, 7 February 2026 to Sunday, 8 February 2026The Sands, Farnham, UK
UK Ultra Hibernal Hills 50 Mile & 50K
Saturday, 7 February 2026Queen Elizabeth Country Park, Horndean, UK
Trails & Tarmac Winter Back Yard Ultra
Saturday, 14 February 2026Crickhowell, Powys, Wales, UKMudfest Rosliston Forest - February
Friday, 20 February 2026Rosliston, Swadlincote, UK
EnduranceLife Northumberland
Saturday, 21 February 2026Bamburgh Castle, Northumberland, UKRunning Tribe Race: February
Saturday, 21 February 2026Chalfont St. Peter Community Centre, Chalfont St Peter, Gerrards Cross, UK
BigMud Trails (EARTH)
Sunday, 22 February 2026Horndean, Hampshire, UK
North Downs Ridge 50K Trail Ultra
Sunday, 22 February 2026Denbies Wine Estate, Dorking, UK
St Peters Way Ultra Marathon
Sunday, 22 February 2026Chipping Ongar to Bradwell on Sea, Essex, UK
Badger Challenge: 6 Hour Running Race
Thursday, 26 February 2026Beacon Hill Country Park, Leicestershire, UK
Lulworth Cove Trail Runs
Saturday, 28 February 2026West Lulworth, Wareham, Dorset, UK
Pierrepont Plod - Winter
Sunday, 1 March 2026Holme Pierrepont, Nottingham, UK
EnduranceLife Sussex
Saturday, 7 March 2026Helen Garden, Eastbourne, UK
Harrold-Odell 50K & 25K Trail Race
Saturday, 7 March 2026Harrold, Bedford, UK
Highland 8-hour Challenge
Saturday, 7 March 2026Glenmore, Scotland, UK
Humanity Direct Amersham Ultra
Saturday, 7 March 2026Amersham, UK
The Winter Green Man Ultra
Saturday, 7 March 2026Ashton Park School, Bristol, UK
Morland 'Marathon' Trail Ultra
Sunday, 8 March 2026Morland, Cumbria, UKThe Rosliston Rumble - Spring
Sunday, 8 March 2026Rosliston, Swadlincote, UK
Beast of the Blacks 10, 20 & 40 Mile
Saturday, 14 March 2026Longtown, Hereford, UK
D33 Deeside Way Ultra
Saturday, 14 March 2026Duthie Park, Aberdeen, UK
The JOGLE
Saturday, 14 March 2026 to Monday, 30 March 2026John O’Groats to Lands End, UK
Welcome Way Trail Race
Saturday, 14 March 2026Otley, West Yorkshire, UK
Hardmoors 55 Trail Ultra
Saturday, 21 March 2026Guisborough to Helmsley, Yorkshire, UK
London Lea Valley 50K Ultra & Gratitude 25K
Saturday, 21 March 2026Welwyn Garden City to Hackney Wick, East London, UK
Lone Wolf South East
Saturday, 21 March 2026 to Sunday, 22 March 2026Alice Holt Forrest, Bucks Horn Oak, Farnham, UK
The Ultra Loop - Heaton Park
Saturday, 21 March 2026Heaton Park, Manchester, UK
Winter's End Ultra & Marathon
Saturday, 21 March 2026Arundel to Winchester, UK
Canalathon Ultra
Sunday, 22 March 2026Sowerby Bridge, Yorkshire, UK
Elephant Challenge
Tuesday, 24 March 2026Salcey Forest, Northampton, UK
Jurassic Coast Challenge
Friday, 27 March 2026 to Sunday, 29 March 2026Portland, Dorset, UK
Jurassic Coast 40 Miler
Saturday, 28 March 2026Weymouth, Dorset, UK
Rasselbock Backyard Ultra - Sherwood Pines
Saturday, 28 March 2026Sherwood Pines, Mansfield, UKRunning Tribe Race: March
Sunday, 29 March 2026Chalfont Park Sports Association, Chalfont St Peter, Gerrards Cross, UK
UK Ultra Springtide 50K & Half Marathon
Sunday, 29 March 2026Arundel, West Sussex, UK
Chalk Stream Ultra 50 & 40 miles
Saturday, 4 April 2026Linkenholt to Totton, Hampshire, UK
The Pendine Sands Races
Sunday, 5 April 2026Pendine Sands, Carmarthanshire, UK
Ripon Stinger Trail Race
Saturday, 11 April 2026Studley Roger, Ripon, North Yorkshire, UK
Rose of the Shires Ultra & Rosebud Marathon
Saturday, 11 April 2026Brixworth, Northampton, UK
SheUltra™
Saturday, 11 April 2026Abersoch to Pwllheli, North Wales, UK
The Calderdale Hike
Saturday, 11 April 2026Sowerby Bridge, Calderdale, West Yorkshire, UK
Battle of the Brampton Valley Way
Sunday, 12 April 2026Northampton, UK
Beast of the Beacons
Saturday, 18 April 2026Talybont-on-Usk, Brecon, UK
Chiltern Ridge Classic 50K
Saturday, 18 April 2026Berkhamsted to Wendover, UK
Cymoedd Sir Fynwy
Saturday, 18 April 2026 to Sunday, 19 April 2026Abergavenny, Monmouthshire, UK
Goathland V Trigs Ultra Challenge
Saturday, 18 April 2026Goathland, Whitby, North Yorkshire, UK
Rat Race Ultra Tour of Arran
Saturday, 18 April 2026 to Sunday, 19 April 2026Isle of Arran, Scotland, UK
Ultra X Spring Trail Series
Saturday, 18 April 2026Midhurst, West Sussex, UK
Bath & Bristol Railway Races Spring
Sunday, 19 April 2026Green Park, Bath, UK
Thames Ring 250
Wednesday, 22 April 2026 to Sunday, 26 April 2026Streatley-on-Thames, Reading, UK
Butcombe Trail Ultra
Saturday, 25 April 2026Mendip Activity Centre, Mendips, UK
EnduranceLife Pembrokeshire
Saturday, 25 April 2026Little Haven, Haverfordwest, UK
Forth Ultra & Team Relay
Saturday, 25 April 2026Helix Park, Falkirk, UK
The Medieval Backyard Ultra
Saturday, 25 April 2026Cosmeston Country Park, Penarth, UK
Total Coastal Ultra & Half Marathon
Saturday, 25 April 2026Kingswear to Shaldon, Devon, UK
Wold Rangers Way Ultra
Saturday, 25 April 2026Driffield, Yorkshire, UK
Clun Valley Trail Half Marathon
Sunday, 26 April 2026Guilden Down, Clun, UK
Eastnor Castle Backyard & Relay
Sunday, 26 April 2026Eastnor, Ledbury, Herefordshire, UK
Shakespeare Marathon & Half Marathon
Sunday, 26 April 2026Wood St, Stratford-upon-Avon, UK
Portland Pig BackYard Ultra
Friday, 1 May 2026Portland, UK
Esk Valley Epic Trail Ultra
Saturday, 2 May 2026Glaisdale, Cumbria, UK
Fife Pilgrim Way Ultra Marathon
Saturday, 2 May 2026North Queensferry to St Andrews, Fife, UK
Maverick Exmoor X-Trail Run
Saturday, 2 May 2026Lynton, Devon, UK
The Malvern Hills Ultra
Saturday, 2 May 2026Abberley, Worcester, UK
Ultra X Scotland
Saturday, 2 May 2026 to Sunday, 3 May 2026Inverness to Dores, Scotland, UK
Marlborough Downs Challenge
Sunday, 3 May 2026Marlborough, Wiltshire, UK
BigWayRound Trail Run
Monday, 4 May 2026Winchester, Hampshire, UK
Bat Challenge
Friday, 8 May 2026Beacon Hill Country Park, Leicestershire, UK
Brighton Backyard Ultra
Saturday, 9 May 2026Falmer, Brighton, UK
Canal Shuffle
Saturday, 9 May 2026Sampford Peverell, Tiverton, UK
Cateran Trail Ultramarathon
Saturday, 9 May 2026Glenshee, Perthshire, UK
Chiltern Hills 100K Ultra
Saturday, 9 May 2026Chesham, Buckinghamshire, UK
Dukeries 30/40
Saturday, 9 May 2026Walesby, Newark, Nottingham, UK
Events 1 to 100 of 264