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 224
13 Valleys Ultra
Friday, 26 September 2025 to Sunday, 28 September 2025Keswick, Cumbria, UK
Ochil Ultra
Friday, 26 September 2025 to Saturday, 27 September 2025Perth / Stirling, Scotland, UK
Epic Epping Forest Ultra & Ultra Lite
Saturday, 27 September 2025Epping Forest, Chingford, London, UK
Harrold-Odell 50K & 25K Trail Race
Saturday, 27 September 2025Harrold, Bedford, UK
Ladybower Reservoir 54K Ultra & 22K
Saturday, 27 September 2025 to Sunday, 28 September 2025Hope Showground, Hope Valley, UK
Rat Race Sea to Summit - Yr Wyddfa (Snowdon)
Saturday, 27 September 2025Caernarfon to Rhyd Ddu, Wales, UK
The Endless Garden Backyard Ultra
Saturday, 27 September 2025Ayot Green, Welwyn, Hertfordshire, UK
Tower to Castle Ultra
Saturday, 27 September 2025Blackpool Tower to Lancaster Castle, Lancashire, UK
UK Ultra Dark Downs 50K & Half Marathon
Saturday, 27 September 2025Lewes, East Sussex, UK
Yorkshire Reservoir Dogs
Saturday, 27 September 2025Otley, West Yorkshire, UK
Wild Run Cotswolds
Sunday, 28 September 2025Charlbury, Oxfordshire, UK
Kingfisher Challenge
Tuesday, 30 September 2025Coombe Abbey Park, Coventry, UK
Atlantic Coast Challenge
Friday, 3 October 2025 to Sunday, 5 October 2025Upton Towans, North Cornwall, UK
Charm Bracelet 100 Ultra
Friday, 3 October 2025 to Sunday, 5 October 2025Dufton to Loftus, UK
Atlantic Coast Ultra 40 Miler
Saturday, 4 October 2025Upton Towans, North Cornwall, UK
Gower Coastal Trail Races
Saturday, 4 October 2025Gower Peninsula, Wales, UK
London Epping Forest 50K & EcoTrail 25K
Saturday, 4 October 2025Wanstead Flats, East London, UK
Manchester Backyard Ultra
Saturday, 4 October 2025Radcliffe, Manchester, UK
Round Ripon Ultra
Saturday, 4 October 2025Studley Roger, Ripon, North Yorkshire, UK
Run to the Sea Bournemouth
Saturday, 4 October 2025Ringwood to Bournemouth, UK
Ely Runfest
Sunday, 5 October 2025Ely Cathedral, Ely, Cambridgeshire, UK
The Ultra Loop - Delamere
Sunday, 5 October 2025Delamere Forest, Frodsham, UK
Aberfoyle Festival of Trail Running
Saturday, 11 October 2025Aberfoyle, Stirling, UK
Beat Box Hill Trails
Saturday, 11 October 2025Box Hill, Tadworth, Surrey, UK
Bennachie Ultra Marathon
Saturday, 11 October 2025Pitcaple, Inverurie, UK
EnduranceLife Suffolk
Saturday, 11 October 2025Dunwich, Saxmundham, UK
Lakes in a Day Ultra & Half
Saturday, 11 October 2025Caldbeck / Ambleside to Cartmel, Cumbria, UK
Lone Wolf South West
Saturday, 11 October 2025 to Sunday, 12 October 2025Haldon Forrest, Bullers Hill, Exeter, UKRat Race Sea to Summit - Ben Nevis
Saturday, 11 October 2025Ben Nevis, Scotland, UK
SkyRun The Mournes
Saturday, 11 October 2025Donard Park, Newcastle, Co. Down, NI
The Loop Ultra
Saturday, 11 October 2025Plas Dolanog, Welshpool, UK
Bath & Bristol Railway Races Autumn
Sunday, 12 October 2025Green Park, Bath, UK
North Chilterns 50K
Sunday, 12 October 2025Putteridge Bury, Luton, UK
The Rosliston Rumble - Autumn
Sunday, 12 October 2025Rosliston, Swadlincote, UK
Amberaid 30 & Petit Raid
Saturday, 18 October 2025Ashover Village Hall, Chesterfield, UK
Dales Dazzler
Saturday, 18 October 2025Skipton, North Yorkshire, UK
Gatliff Marathon
Saturday, 18 October 2025Edenbridge, Kent, UK
Maverick Jurassic 100K Ultra
Saturday, 18 October 2025Wareham, Dorset, UK
Tentsmuir Forest 8-hour Challenge
Saturday, 18 October 2025Tentsmuir Forest, Scotland, UK
Ultra Tour Yorkshire Dales
Saturday, 18 October 2025 to Sunday, 19 October 2025Grassington, Skipton, UK
Beachy Head Marathon, Ultra & 10K
Saturday, 25 October 2025Eastbourne, UK
EnduranceLife North York Moors
Saturday, 25 October 2025Ravenscar, North Yorkshire, UK
Jedburgh Three Peaks Ultra
Saturday, 25 October 2025Jedburgh, Scottish Borders, UK
OMM Original Mountain Marathon
Saturday, 25 October 2025 to Sunday, 26 October 2025Shap Abbey, Cumbria, UK
Thames Trail Ultra
Saturday, 25 October 2025Iffley, Oxfordshire to Henley on Thames, UK
Giddy Horse Races
Sunday, 26 October 2025Chepstow, Monmouthshire, UK
Running Tribe Race: October
Sunday, 26 October 2025Chalfont Park Sports Club, Chalfont St Peter, Gerrards Cross, UK
Stort 30 Trail Ultra
Sunday, 26 October 2025Bishop’s Stortford, Hertfordshire, UK
Black Beacon Mountain Races
Friday, 31 October 2025 to Sunday, 2 November 2025Hay-on-Wye, Hereford, Wales, UK
Chiltern Ridge Winter 50K
Saturday, 1 November 2025Berkhamsted, UK
Glen Ogle 33 Ultra
Saturday, 1 November 2025Killin, Perthshire, UK
Off The Tarmac Ultra Marathon
Saturday, 1 November 2025Cyfarthfa Park, Merthyr Tydfil, Wales, UK
Winter Warrior Ultra
Saturday, 1 November 2025Norwich to Diss, Norwich, UKMudfest Rosliston Forest - November
Friday, 7 November 2025Rosliston, Swadlincote, UK
The Druid's Challenge
Friday, 7 November 2025 to Sunday, 9 November 2025Tring, Hertfordshire to Wroughton, Wiltshire, UK
EnduranceLife Gower
Saturday, 8 November 2025Oxwich Bay, Gower, Swansea, UK
Five Trails Ultra & 3 Trails Half
Saturday, 8 November 2025Graffham, Petworth, UK
Pen Llyn Ultra - Winter Edition
Saturday, 8 November 2025Pwllheli, North Wales, UK
The Dock 2 Dock
Saturday, 8 November 2025Gloucester Docks to Sharpness Docks, Gloucestershire, UK
The Clumber Lakeside - Autumn
Sunday, 9 November 2025Clumber Park, Worksop, UK
Slate Trail Ultra
Saturday, 15 November 2025Porth Penrhyn, Bangor, Wales, UK
Trails & Tarmac 12 Hour Back Yard Ultra
Saturday, 15 November 2025Crickhowell, Powys, Wales, UK
Wharfedale Skyline Trail Race & Ultra
Saturday, 15 November 2025Otley, West Yorkshire, UK
Winter Wirral Ultra
Saturday, 15 November 2025Eastham, Birkenhead, Wirral, UK
Roly's Run
Sunday, 16 November 2025Swanmore, Southampton, Hampshire, UK
Starcross Shuffle 7 Hour Challenge
Sunday, 16 November 2025Starcross, Exeter, Devon, UK
Dormouse Challenge
Friday, 21 November 2025Salcey Forest, Northampton, UK
Borders 8-hour Challenge
Saturday, 22 November 2025Newcastleton, Scottish Borders, UK
Sidlaw Ultra
Saturday, 29 November 2025Glamis Castle to Scone Palace, Scotland, UKRunning 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, 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 X
Sunday, 28 December 2025The Meon Hall, Meonstoke, Southampton, UK
Country to Capital Ultra Marathon
Saturday, 10 January 2026Wendover to London, UK
EnduranceLife North Cornwall
Saturday, 10 January 2026Polzeath, North Cornwall, UKMudfest Rosliston Forest - January
Friday, 16 January 2026Rosliston, Swadlincote, 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, UKThe 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, 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, UKTrails & Tarmac Winter Back Yard Ultra
Friday, 13 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
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
Pierrepont Plod - Winter
Sunday, 1 March 2026Holme Pierrepont, Nottingham, UK
EnduranceLife Sussex
Saturday, 7 March 2026Helen Garden, Eastbourne, UK
Events 1 to 100 of 224