50K races
The first ultra distance most people run, at around 50 km. A long day rather than an overnight one.
119 races
September 2026
6 races26
Sept
2026
Sea to Summit Yr Wyddfa
Caernarfon Castle, Gwynedd · Rat Race
Forty-seven kilometres from the gates of Caernarfon Castle to the summit of Yr Wyddfa.
Event full
26
Sept
2026
Chiltern 50
Henley Basecamp, Oxfordshire · Ultra Challenge
Fifty or twenty-five kilometres of Chiltern loops out of Henley, with a 10K for the day.
Entries open
26
Sept
2026
5 Valleys Ultra
Waterhead, Ambleside, Cumbria · 13 Valleys Ultra
Waterhead to Keswick over five valleys, waymarked the whole way.
Event full
26
Sept
2026
Ladybower Reservoir
Hope, Derbyshire · RunThrough Trails
Peak District moorland from the Hope Valley.
Entries open
26
Sept
2026
Yorkshire Reservoir Dogs
Otley, West Yorkshire · Punk Panther
Seven reservoirs, barely a hill. The organiser calls it the one for beginners, and they're right.
HARD TO VERY HARD
Entries open
26
Sept
2026
Pilgrims' Ultra
Holy Island of Lindisfarne, Northumberland · Cold Brew Events
From Holy Island down the Northumberland coast, as far as you fancy going.
Entries open
October 2026
16 races3
Oct
2026
The Maverick South Downs Trail
Horndean, Hampshire · Maverick Race
Queen Elizabeth Country Park and the South Downs Way.
MODERATE TO VERY HARD
Entries open
4
Oct
2026
Marlow Donkey
Liston Hall, Marlow, Buckinghamshire · LDWA Thames Valley
A new Chilterns route each year from Marlow, centred on the Hambleden and Stonor valleys: 25k, 40k or a fiftieth-anniversary 50k. Limited to 150 and usually full by early September.
Entries open
£15–£20
10
Oct
2026
Sea to Summit Ben Nevis
Fort William, Highland · Rat Race
Forty-five kilometres from sea level in Lochaber to the summit of Ben Nevis.
Entries open
10
Oct
2026
Kent Downs 50
Maidstone Basecamp, Kent · Ultra Challenge
Fifty or twenty-five kilometres of the Kent Downs on loops from Maidstone.
Entries open
10
Oct
2026
Beat Box Hill
Box Hill, Surrey · RunThrough Trails
Surrey Hills repeats on the North Downs.
Entries open
10
Oct
2026
CTS Suffolk
Dunwich, Suffolk · Endurancelife
Forest, heath and beach out of Dunwich.
MODERATE TO VERY HARD
Entries open
10
Oct
2026
The Loop Ultra
Camp Plas, Llanfihangel, Powys · Limitless Trails
Fifty kilometres and fifteen hundred metres of climb on a marked loop through the hills of Mid Wales from Camp Plas.
Entries open
17
Oct
2026
The Maverick Jurassic Coast X-Trail
Corfe Castle, Dorset · Maverick Race
A hundred kilometres of the Jurassic Coast, or half of it.
VERY HARD TO EXPERT
Entries open
17
Oct
2026
Gatliff Marathon
Edenbridge Cricket Club, Kent · COPSE
The forty-second Gatliff: 50km or 25km on footpaths and tracks through the Kent, Surrey and Sussex Weald from Edenbridge, a new route every year, ten hours, five checkpoints and a GPX to download beforehand.
Entries open
£21–£25
17
Oct
2026
Ultra Tour of the Yorkshire Dales
Devonshire Institute, 48 Main Street, Grassington, North Yorkshire · Due North Events
Grassington to Malham Tarn, Arncliffe and Wharfedale, with route choice between checkpoints.
VERY HARD TO EXPERT
Entries open
18
Oct
2026
Knaresborough Soft Shoe Shuffle
Start of the Beryl Burton Cycleway, Knaresborough · It's Grim Up North Running
A 6.5-mile trail lap from the centre of Knaresborough, up through the parkland and along the old railway towards Harrogate, run once for the ten-k-ish and five times for the ultra. Road shoes advised.
Entries open
£29–£56
18
Oct
2026
Four Reservoirs 53KM Ultra Run and 25KM Trail Run
Shotley Bridge, County Durham · Wild Deer Events
Past four reservoirs out of Shotley Bridge, twenty-five kilometres or fifty-two.
HARD TO VERY HARD
Not open yet
24
Oct
2026
Nidderdale Way
Pateley Bridge, North Yorkshire · Punk Panther
The full Nidderdale Way at fifty-six miles, or a bite of it. Punk Panther's longest.
HARD TO EXPERT
Entries open
24
Oct
2026
CTS North York Moors
Ravenscar, North Yorkshire · Endurancelife
Moorland and cliff from Ravenscar.
HARD TO VERY HARD
Entries open
31
Oct
2026
Chiltern Ridge Winter 50K
Berkhamsted Cricket Club, Hertfordshire · Runaway Racing
The Chiltern Ridge loop in its winter form, fifty kilometres out of Berkhamsted and back.
VERY HARD
Entries open
31
Oct
2026
Hubble Bubble
Leeds & Liverpool Canal, Wyther Lane, Kirkstall, Leeds · It's Grim Up North Running
The Halloween one at Kirkstall: 10k to ultra along the flat Leeds & Liverpool towpath, fancy dress encouraged, spot prizes for the best of it.
Entries open
£5–£56
November 2026
8 races7
Nov
2026
CTS Gower
Oxwich Bay, Swansea · Endurancelife
Oxwich Bay, and the Gower coast the hard way.
HARD TO VERY HARD
Entries open
14
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
14
Nov
2026
Wharfedale Skyline
Otley, West Yorkshire · Punk Panther
Otley to the high ground above Wharfedale, by way of Yeadon Tarn.
HARD TO VERY HARD
Entries open
14
Nov
2026
Winter Wirral Ultra
Ellesmere Port, Cheshire · Charm Bracelet Trail Events
Their flattest ultra — thirty-six circular miles with barely 250 metres of climb.
VERY HARD
Entries open
15
Nov
2026
Tweed Valley Ultra
Glentress Peel Visitor Centre, near Peebles · High Terrain Events
Sixty-seven or fifty kilometres of forest track, singletrack and heather moor out of Glentress, with the option to drop to the fifty on the day.
VERY HARD TO EXPERT
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
21
Nov
2026
North Chilterns 50K
Offley, Hertfordshire · Runaway Racing
Fifty kilometres through the northern Chilterns in November, starting near Offley.
VERY HARD
Entries open
21
Nov
2026
The Kendal Mountain Trail Runs
Kendal, Cumbria · Maverick Race
Kendal Mountain Festival — 50km, 25km and a 10km that is really 11.8.
Entries open
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