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 287
Devilla 8-hour Challenge
Saturday, 4 April 2026Devilla Forrest, Fife, Scotland, 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 & 10K
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
Bristol Backyard Ultra
Saturday, 2 May 2026Blaise Castle Estate, Bristol, South West, 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: 6 Hour Running Race
Friday, 8 May 2026Beacon Hill Country Park, Leicestershire, UK
Brighton Backyard Ultra
Saturday, 9 May 2026Falmer, Brighton, UK
Canal Shuffle & 10K
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
EnduranceLife Exmoor
Saturday, 9 May 2026Martinhoe, Exmoor, UK
Goring Gap Trails
Saturday, 9 May 2026 to Sunday, 10 May 2026Mapledurham, Reading, UK
Holy Trail Ultras
Saturday, 9 May 2026Oulton Broad, Lowestoft, Suffolk, UK
Kintyre Way Ultra
Saturday, 9 May 2026Tayinloan to Campbeltown, Scotland, UK
London 100K
Saturday, 9 May 2026Pimlico, London, UK
Run Rabbit Trail Festival
Saturday, 9 May 2026 to Sunday, 10 May 2026Deene Park Estate, Deene, Corby, UK
Run to the Sea Brighton
Saturday, 9 May 2026Horsham to Brighton, Sussex, UK
Spire Ultra
Saturday, 9 May 2026North Wingfield, Chesterfield, Derbyshire, UK
West Country Ultra
Saturday, 9 May 2026 to Sunday, 10 May 2026Taunton / Minehead, Somerset, UK
Sandstone Trail Challenge
Sunday, 10 May 2026Whitchurch to Frodsham, Cheshire, UK
Shires & Spires
Sunday, 10 May 2026Naseby, Northampton, UK
Bishop's Castle Trail Ultra
Saturday, 16 May 2026Bishop's Castle, Shropshire, UK
Kendal to Preston Ultra
Saturday, 16 May 2026Kendal to Preston, Lancashire, UK
Maverick Cotswolds Trail Run
Saturday, 16 May 2026Winchcombe, Gloucestershire, UK
Skipton Skedaddle Trail Race
Saturday, 16 May 2026Skipton, North Yorkshire, UK
WitchWood Trail Run
Saturday, 16 May 2026Inverkip, Greenock, Scotland, UK
Cape Wrath Ultra
Sunday, 17 May 2026 to Sunday, 24 May 2026Fort William to Cape Wrath, UK
Guernsey Ultra
Sunday, 17 May 2026Guernsey, Channel Islands, UK
Hardmoors 200 Trail Ultra
Friday, 22 May 2026 to Sunday, 24 May 2026Kingston upon Hull to Helmsley, Yorkshire, UKHardmoors 110 Trail Ultra
Saturday, 23 May 2026Filey to Helmsley, Yorkshire, UK
Kirkhill 8
Saturday, 23 May 2026Kirkhill Forest, Aberdeen, UK
PWR Endure Backyard Ultra Marathon
Saturday, 23 May 2026Tockington, Bristol, Gloucestershire, UK
The Fox Trail Ultra, Marathon & Half Marathon
Saturday, 23 May 2026Godalming, Surrey, UK
The Long Way Round
Saturday, 23 May 2026Albury, Guildford, UK
UK Ultra South Downs Half Marathon, 20 mile, 50K & 100K
Saturday, 23 May 2026Eastbourne, UK
Blair Castle Trail Weekender
Friday, 29 May 2026 to Sunday, 31 May 2026Blair Castle, Blair Atholl, UK
DNF Backyard Ultra
Friday, 29 May 2026Little Haywood, Staffordshire, UK
Beat The Sunset 50K Ultra
Saturday, 30 May 2026Maidenhead, Berkshire, UK
Lake District Running Festival
Saturday, 30 May 2026 to Sunday, 31 May 2026Grasmere, Ambleside, Cumbria, UK
Maverick Peak District X-Trail Run
Saturday, 30 May 2026Bakewell, Derbyshire, UK
The Ridgeway Challenge & Ridgeway Chase
Saturday, 30 May 2026Ivinghoe Beacon to Avebury, UK
The Ultra Loop - Track Edition
Saturday, 30 May 2026Stockport, Manchester, UK
Three Castles 50km Ultra
Saturday, 30 May 2026Rochester to Tonbridge, Kent, UK
Peckham to Peckham Ultramarathon
Sunday, 31 May 2026Peckham, London to East Peckham, Kent, UK
Pembrokeshire Coastal Races
Friday, 5 June 2026 to Sunday, 7 June 2026Dale, Milford Haven, Wales, UK
Blended's Backyard Ultra
Saturday, 6 June 2026Chilton Candover, Hampshire, UK
EnduranceLife Classic Quarter
Saturday, 6 June 2026Lizard Point to Land's End, Cornwall, UK
Glen Lyon Ultra Marathon & Trail Race
Saturday, 6 June 2026 to Sunday, 7 June 2026Loch Lyon, Aberfeldy, UKGlentress 8-hour Challenge
Saturday, 6 June 2026Glentress Forest, Scotland, UK
National Forest Way Ultra 75
Saturday, 6 June 2026Burton-on-Trent, Midlands, UK
ONER Ultra Trail Run
Saturday, 6 June 2026Weymouth, Dorset, UK
Suffolk Back Yard Ultra
Saturday, 6 June 2026High Lodge, Thetford Forest, UK
BigSea Trails (WATER)
Sunday, 7 June 2026Studland, Dorset, UK
Manchester Backyard Ultra
Saturday, 13 June 2026Radcliffe, Manchester, UK
Rat Race The Wall Ultramarathon
Saturday, 13 June 2026Carlisle to Gateshead, Northern England, UK
Run Sandringham 24 Hour
Saturday, 13 June 2026 to Sunday, 14 June 2026Royal Sandringham Estate, Norfolk, UK
Six Dales Trail Race
Saturday, 13 June 2026Otley, West Yorkshire, UK
The Breakheart Backyard Ultra
Saturday, 13 June 2026Breakheart Quarry, Dursley, UK
The Hardwick Hobble - Summer
Saturday, 13 June 2026Chesterfield, Derbyshire, UK
Lamplighter 40 Mile Ultra
Saturday, 20 June 2026Goathland, Whitby, North Yorkshire, UK
Midsummer Mortimer Trail Run
Saturday, 20 June 2026Kington to Ludlow, Shropshire, UK
Race to the King Trail Run
Saturday, 20 June 2026West Dean, Chichester, West Sussex, UK
Solstice at the Lakes Trail Runs
Saturday, 20 June 2026 to Sunday, 21 June 2026Snodland, Kent, UK
The Sunset Running Festival
Saturday, 20 June 2026Siverknowes Promenade, Edinburgh, UK
Three Shires Way Ultra & Marathon
Saturday, 20 June 2026Hanslope / Yelden to Grafham Water, UK
Pierrepont Plod - Winter
Sunday, 21 June 2026Holme Pierrepont, Nottingham, UK
Longbridge Backyard Ultra - Summer
Friday, 26 June 2026Litlington, East Sussex, UK
Hardwolds 40 Trail Ultra
Saturday, 27 June 2026Beverley to Malton, Yorkshire, UK
HARP24 Endurance Race
Saturday, 27 June 2026 to Sunday, 28 June 2026Rochford, Essex, UK
Hourglass
Saturday, 27 June 2026Whitecross, Wadebridge, UK
Maverick North Downs Trail Run
Saturday, 27 June 2026Cranleigh, Surrey, UK
Events 1 to 100 of 287