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Marathon Eryri
Iconic mountain marathon through Snowdonias dramatic peaks
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Monsal Trail October Half Marathon & 10K
Runs the old railway line past Monsal Head viaduct
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Thames Trail Ultra
Beloved ultra tracing the Thames past rowing clubs and villages
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EnduranceLife North York Moors
Trail routes through a National Park steeped in Yorkshire heritage
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Jedburgh Three Peaks Ultra
Three hill summits in the Scottish Borders
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Beachy Head Marathon
One of the biggest off-road marathons in the UK across South Downs
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Nidderdale Way Ultra
A multi-day ultra along the entire Nidderdale Way
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Battersea Park Running Festival
Laps of Battersea Park beside the Thames
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Tentsmuir Forest 8-hour Challenge
Laps through Tentsmuir's coastal pine forest for 8 hours
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Rugby Half Marathon
Runs through Rugby, birthplace of the sport of rugby
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Shane's Castle Marathon, Half Marathon & 10K
Through Shane's Castle Estate, filmed in Game of Thrones
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Stroud Half Marathon
Hilly half marathon rolling through the scenic Cotswold countryside
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Tenby 10K
Two closed-road laps through the walled town of Tenby
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Stort 30 Trail Ultra
Ultra along the scenic River Stort through the English countryside
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Worthing Seafront 10K Fun Run
Along Worthing's seafront on the West Sussex coast
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River Thames Half Marathon
Follows the Thames towpath through Walton-on-Thames
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Worksop Half Marathon
For 2026 the whole course runs in reverse
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Grand Canal Canter: Autumn
Follows the towpath of the historic Grand Western Canal
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Chase The Moon Queen Elizabeth Olympic Park 5k & 10k
Past London's Olympic Stadium in Stratford
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Black Beacon Mountain Races
Four distances across the Brecon Beacons' high peaks
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Selworthy Stargazer
A night run across Exmoor beneath the dark-sky stars
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Irchester Spooktacular Night Run
Runs Irchester Country Park's woodland trails after dark
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Inverleith Park 5K & 10K
Laps of Inverleith Park by Edinburgh's Botanic Garden
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Chiltern Ridge Winter 50K
Loops the Chiltern Ridgeway from Berkhamsted
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Devon Trail Races
Trail loops around Roadford Lake in South West Devon
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Run Forest Run: Minnowburn
Forest and meadow trails along Belfast's Lagan Valley
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Lakeland Trails Helvellyn
Trail through the breathtaking peaks of the Lake District
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Petzl Halloween Night Runner Delamere
Headtorch night race through Delamere Forest
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The Stone Circle Marathon & Half
Multi-terrain loops past the Broughton Stone Circle
Save any of these to your season in RunCalendar and hear the morning entries open. Free on iPhone, no account needed.
Every race here is published by its organiser; RunCalendar checks the date and the entry window against the organiser's own page and rebuilds this calendar every night. A confirmed date shows its day; a provisional one shows only its month. Last updated 22 October 2026.