Marathons to run in Autumn / Winter 2025

A short list of the best marathons in late 2025

Feeling inspired by spring marathons, like London, Manchester, Edinbugh, Belfast, etc? Here's a few autumn / winter marathons that we recommend. Races are listed in chronological order.

1. Glencoe Marathon
A challenging point-to-point, off-road and hilly marathon through the majesty of the Scottish West Highlands.

Date : 14 September 2025
Location : Red Squirrel Campsite, Glencoe
Cost : £60
URL : https://www.glencoemarathon.co.uk

2. Loch Ness Marathon
Run one of the UK' most scenic marathons along the shores of Loch Ness to the city of Inverness.

Date : 28 September 2025
Location : Loch Ness, Highland
Cost : £72 - £74
URL : https://lochnessmarathon.com

3. Eden Project Marathon
Run 26.2 miles at the iconic Eden Project in Cornwall.

Date : 19 October 2025
Location : Eden Project, Cornwall
Cost : £44 - £46
URL : https://www.edenproject.com

4. Marathon Eryri
Twice voted the Best British Marathon, the Marathon Eryri is a tough, but memorable, race on a stunningly scenic route around the highest peaks in Wales.

Date : 25 October 2025
Location : Llanberis, Gwynedd
Cost : £48 - £50
URL : https://www.marathoneryri.com

5. Portsmouth Coastal Waterside Marathon
Join up to 1000 runners on a festive coastal marathon along Portsmouth's coast.

Date : 21 December 2025
Location : Portsmouth, Hampshire
Cost : £37.99
URL : https://www.fitprorob.biz

If you're looking for something different, there are many others marathons to choose from. Check out our UK, European and International lists for many more marathon options.