100K races
Around 100 km. Long enough that eating, feet and head torches decide the day as much as fitness does.
39 races
November 2026
2 races14
Nov
2026
Winter Weavers' Way Ultras
Great Yarmouth, Norfolk · Boghopper Races
Fifty or a hundred kilometres of the Weavers' Way in November, Great Yarmouth to Cromer Pier.
Entries open
21
Nov
2026
Peak District South & North
Edale, Derbyshire · Ranger Ultras
Fifty kilometres on the Saturday, forty-three on the Sunday, or both across one weekend.
Entries open
December 2026
1 race
January 2027
1 race
April 2027
3 races10
Apr
2027
Ultra Tour of Arran
Ormidale Park, Brodick, Isle of Arran · Rat Race
Ninety-seven kilometres around the Isle of Arran over two days, starting and finishing at Brodick.
Entries open
17
Apr
2027
Spring Trail Series
Cowdray Estate, West Sussex · Ultra X
The Serpent Trail through the South Downs — five distances, one start line.
Entries open
24
Apr
2027
The Fellsman
Ingleton, North Yorkshire · The Fellsman
Sixty-one miles across the Dales from Ingleton to Threshfield, navigating all the way.
Not open yet
May 2027
7 races1
May
2027
Ultra X Scotland
Inverness, Highland · Ultra X
Seven race options on the Loch Ness trails, out of Inverness.
Entries open
1
May
2027
Fife Pilgrim Way Ultra
North Queensferry (Doubletree Hilton) · Blast Running
90K ultra on the Fife Pilgrim Way, North Queensferry to St Andrews
Not open yet
£135
1
May
2027
Isle of Wight Challenge
Chale Basecamp, Isle of Wight · Ultra Challenge
The whole Isle of Wight coastal path in one go, a hundred and six kilometres, or half or a quarter of it.
Entries open
15
May
2027
Jurassic Coast Challenge
Corfe Castle, Dorset · Ultra Challenge
A hundred kilometres of Jurassic Coast from Corfe Castle to Bridport, or fifty-nine or twenty-five of it.
Entries open
22
May
2027
The Grim Reaper
Grimsthorpe Castle, Bourne · Bog Dog Running
10-mile estate loop at Grimsthorpe Castle run as 10, 40, 70 or 100 miles
Not open yet
£35–£160
29
May
2027
London 2 Brighton Challenge
Richmond upon Thames, London · Ultra Challenge
Capital to coast: a hundred kilometres from Richmond over the North and South Downs to Brighton, the original Ultra Challenge.
Entries open
29
May
2027
The Priory Ultra
Bamburgh Castle To Tynemouth Priory · Wild Deer Events
A hundred kilometres of Northumberland coast, Bamburgh Castle to Tynemouth Priory.
EXPERT
Not open yet
June 2027
8 races5
Jun
2027
Ultra Scotland 50
St Johns Town of Dalry, Dumfries and Galloway · GB Ultras
Fifty-six miles of the Southern Upland Way.
EXPERT
Entries open
5
Jun
2027
Lake District Challenge
Kendal Basecamp, Cumbria · Ultra Challenge
A hundred kilometres around the southern Lake District from Kendal, or fifty or twenty-five.
Entries open
12
Jun
2027
Cotswold Way Challenge
Cirencester Basecamp, Gloucestershire · Ultra Challenge
A hundred, seventy-five, fifty or twenty-five kilometres of the Cotswolds from Cirencester.
Entries open
12
Jun
2027
The Wall
Carlisle, Cumbria · Rat Race
A hundred and twelve kilometres of Hadrian's Wall country, Carlisle to the Newcastle quayside, waymarked the whole way.
Entries open
12
Jun
2027
Pilgrims Trail 60
Bangor Cathedral · Black Sheep Events
Sixty pilgrim miles of the North Wales Pilgrims Way from Bangor Cathedral to Aberdaron inside twenty-four hours, with a tracker, seven checkpoints and the waymarkers to follow.
Entries open
£109–£119
19
Jun
2027
Two Roses Ultra
Wadsworth Community Centre, Billy Lane, Old Town, Hebden Bridge · She Strides Events
Two 50 km loops, Lancashire and Yorkshire, or both for 100 km from Hebden Bridge
Not open yet
£55–£100
19
Jun
2027
Race to the King
West Dean Gardens, West Sussex · Threshold Trail Series
Thirty to a hundred and three kilometres of the South Downs Way and the Monarch's Way, out and back from West Dean Gardens.
HARD TO EXPERT
Entries open
26
Jun
2027
North Yorks Challenge
Scarborough Basecamp, North Yorkshire · Ultra Challenge
A hundred kilometres of North Yorkshire coast and moor from Scarborough, or fifty or twenty-five.
Entries open
July 2027
8 races3
Jul
2027
Peak District Challenge
Bakewell Basecamp, Derbyshire · Ultra Challenge
A hundred kilometres of the southern Peak District on loops from Bakewell, or fifty or twenty-five.
Entries open
9
Jul
2027
Saint Cuthbert's Way Ultra
Abbey Mill Park, Friarshaugh, Melrose · Trail Outlaws
100km and 60km on St Cuthbert's Way to Holy Island, racing the tide
EXPERT
Not open yet
10
Jul
2027
Lakeland Trails Ultra
Ambleside, Cumbria · Lakeland Trails
A hundred kilometres from a minute past midnight, or fourteen in the morning.
HARD TO EXPERT
Entries open
10
Jul
2027
Race to the Stones
Lewknor, Oxfordshire · Threshold Trail Series
A hundred kilometres of the Ridgeway, Britain's oldest road, from Lewknor to the standing stones at Avebury — in one go or split over two days.
VERY HARD TO EXPERT
Entries open
17
Jul
2027
Gower Peninsula Challenge
Penrice Castle, Gower · Ultra Challenge
A hundred kilometres round the Gower from Penrice Castle, or seventy-five, fifty or twenty-five.
Entries open
17
Jul
2027
Pewsey Vale Ultra
Linkenholt Activity Centre, Linkenholt, Andover · AND-OVER Trail Events
125km loop of the Pewsey Vale Circular from Linkenholt, 24-hour cut-off
Not open yet
24
Jul
2027
Ultra X Wales
Abergavenny, Monmouthshire · Ultra X
A hundred miles down to 12km in the Bannau Brycheiniog.
Entries open
24
Jul
2027
Beacons Way Ultra 100km
Llangynidr, Powys · GB Ultras
A hundred kilometres of the Beacons Way, starting at noon.
EXPERT
Entries open
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