2026-2027 UK Ultra Marathon Events | Ultramarathon Calendar

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UK ULTRA MARATHON CALENDAR

Welcome to the definitive guide for ultramarathon events across the UK in 2026 - 2027! Whether you're a seasoned ultra-runner looking for your next epic challenge or an aspiring athlete ready to tackle your first long-distance race, you've come to the right place.

With more than 120 of the top UK ultra running events listed, this comprehensive ultra marathon calendar makes it easy to discover races across England, Scotland, and Wales. From gruelling 100 mile challenges through national parks to scenic 50km routes along coastal paths, I've curated a diverse selection to help you find the perfect event!

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243 events found

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Back Yard Ultra

London Backyard Ultra

Distance: Unlimited

Elevation: 116M

Location: Croydon, London

Date: Sat, 29th Aug 2026

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Back Yard Ultra

Gosfield Backyard Ultra

Distance: Unlimited

Elevation: 28M

Location: Gosfield, Essex

Date: Sat, 29th Aug 2026

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Back Yard Ultra

Devon and Cornwall Backyard Ultra

Distance: Unlimited

Elevation: 127M

Location: Plymouth, Devon

Date: Sat, 29th Aug 2026

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Back Yard Ultra

Kinloss Backyard Ultra

Distance: Unlimited

Elevation: -

Location: Kinloss, Scotland

Date: Sat, 29th Aug 2026

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50 KM

Dales Dazzler 55K

Distance: 55KM

Elevation: 1,132M

Location: Skipton, North Yorkshire

Date: Sat, 29th Aug 2026

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50 Miles

Dales Dazzler 50 Miler

Distance: 51 Miles

Elevation: 1,915M

Location: Skipton, North Yorkshire

Date: Sat, 29th Aug 2026

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50 Miles

Manumit Dartmoor 50 Mile

Distance: 50 Mile

Elevation: 2,250M

Location: Princetown, Dartmoor

Date: Sat, 29th Aug 2026

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50 KM

Manumit Dartmoor 50K

Distance: 50KM

Elevation: 1,577M

Location: Princetown, Dartmoor

Date: Sat, 29th Aug 2026

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Multi Day

Leeds & Liverpool Canal 130

Distance: 130 Miles

Elevation: 563M

Location: Liverpool

Date: Sat, 29th Aug 2026

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50 Miles

Highland Fling

Distance: 53 Miles

Elevation: 2,300M

Location: Milngavie, Scotland

Date: Sat, 29th Aug 2026

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Multi Day

Ring O’ Fire

Distance: 130 Miles

Elevation: 4,000M

Location: Holyhead, North Wales

Date: Fri, 4th Sep 2026

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50 Miles

Snowdon Ultra 50

Distance: 45 Miles

Elevation: 3,254M

Location: Snowdonia Eryri

Date: Sat, 5th Sep 2026

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100 Miles

Snowdon Ultra 100

Distance: 102 Miles

Elevation: 5,788M

Location: Snowdonia Eryri

Date: Sat, 5th Sep 2026

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50 KM

Snowdonia Sea2Sky 50K

Distance: 54.2KM

Elevation: 1,632M

Location: Bath House, Barmouth

Date: Sat, 5th Sep 2026

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50 KM

Maverick Kielder Forest 50k

Distance: 52KM

Elevation: 1,409M

Location: Kielder Castle, Northumberland

Date: Sat, 5th Sep 2026

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Back Yard Ultra

Rasselbock Hardwick Hall BYU

Distance: Unlimited

Elevation: -

Location: Hardwick Hall, Derbyshire

Date: Sat, 5th Sep 2026

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Back Yard Ultra

Mackyard x 4ZERO Ultra

Distance: Unlimited

Elevation: -

Location: Gatesgarth Farm, Buttermere

Date: Sat, 5th Sep 2026

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50 KM

RIDUM 50K

Distance: 50KM

Elevation: 1,340M

Location: Parc Penalta, Wales

Date: Sat, 5th Sep 2026

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50 KM

Dartmoor in a Day

Distance: 50KM

Elevation: 945M

Location: Okehampton, Devon

Date: Sat, 5th Sep 2026

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Multi Day

Dragons Back Race

Distance: 380KM

Elevation: 17,400M

Location: Conwy, North Wales

Date: Mon, 7th Sep 2026

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50 Miles

The LAP Anticlockwise

Distance: 47 Miles

Elevation: 2,600M

Location: Low Cunsey Farm, Ambleside

Date: Sat, 12th Sep 2026

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100 Miles

Robin Hood 100

Distance: 100 Miles

Elevation: 1,302M

Location: Retford, Nottinghamshire

Date: Sat, 12th Sep 2026

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50 Miles

Yellow Belly Ultra 50 - Summer

Distance: 50 Miles

Elevation: 1,300M

Location: Swallow Village. Lincolnshire

Date: Sat, 12th Sep 2026

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50 KM

Suffolk Coastal Path 50K

Distance: 50KM

Elevation: 120M

Location: Kensington Gardens, Lowestoft

Date: Sat, 12th Sep 2026

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EXPLORE UPCOMING UK ULTRAMARATHONS

Browse and discover ultra marathon races across all distances, terrains and elevation. Whether you're building up to your first ultra or adding another 100 miler to your calendar, the listings are here to help you find the perfect event.

Sort by distance, climb or location to easily find races that fit your training plan and travel preferences. With new ultra marathons added weekly, there’s always another challenge on the horizon.

Don’t just run – go the distance. Find your next ultra now.

50k Ultras 50 Mile Ultras 100k Ultras 100 Mile Ultras Multi-Day Ultras Backyard Ultras

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FAQs

What is an ultramarathon?

An ultramarathon is any running event that exceeds the traditional marathon distance of 26.2 miles (42.195 kilometres). Common formats include 50k, 100k, 50 miles, 100 miles, and multi-day endurance events.

How can I search for ultra marathons in my area?

GB Ultra Runner allows you to filter events by location, distance category, elevation and organiser. You can browse events by country, including ultramarathons in Scotland, England and Wales, or use the ultramarathon map to find races near you.

How often are ultra marathons added or updated?

I aim to keep the event listings fresh by updating the site frequently, usually on a weekly basis. This includes adding new races, updating details and removing any cancelled or outdated ultras.

Can I recommend or add a race to your site?

Yes, definitely! If you’re a race organiser or know of an ultra that’s not on the list, you’re welcome to submit it. I manually review every submission to ensure it meets the criteria and provides accurate information. Click here for details on how to list your ultra event.

Do I have to pay to use the website?

Nope, this is a passion project and my aim is to create a super user-friendly resource for all things ultra running …free of charge!

What does the 'elevation' filter refer to?

This filter helps you choose events based on total elevation gain. Some races follow flatter terrain, while others involve steep mountain climbs. I categorise events so you can find ones that match your training and experience level.

I'm new to ultra running, any tips?

Training for an ultra requires gradual progression, good kit choices and smart fuelling. While I don’t offer coaching, I am in the process of putting together some ultramarathon training plans to help new commers get started. Over the coming months I'll also be posting some running gear reviews so keep and eye out for that too.

How do I find an ultra marathon in the UK?

The best way to find an ultra marathon in the UK is to use a dedicated ultra marathon finder that allows you to filter by distance (50k, 100k, 100 miles+), terrain, and location. At GB Ultra Runner, we provide a comprehensive, human-verified directory of races across England, Scotland, and Wales. Simply use our search tool at the top of this page to filter by month or region to find your next challenge.

What is the best ultra finder?

While there are several options available, the best ultra finder is one that offers more than just a list. GB Ultra Runner is widely considered one of the UK’s leading resource because we offer an integrated ecosystem for ultra-runners:

Comprehensive Listings: The most up-to-date calendar of UK ultra marathons.
Coach Directory: A dedicated Ultra Marathon Coach Directory to help you find professional guidance for your specific goals.
Pace Calculator: Use our Ultra Pace Calculator to nail your race-day strategy and cut-off timings.
Reviews & Reports: Stay informed with the latest gear reviews and race reports from your favourite ultras, written by runners for runners.

Filter Races

UK Ultra Marathons 2026 - 2027

Your Next Ultra Starts Here!

UK ULTRA MARATHON CALENDAR

London Backyard Ultra

Gosfield Backyard Ultra

Devon and Cornwall Backyard Ultra

Kinloss Backyard Ultra

Dales Dazzler 55K

Dales Dazzler 50 Miler

Manumit Dartmoor 50 Mile

Manumit Dartmoor 50K

Leeds & Liverpool Canal 130

Highland Fling

Ring O’ Fire

Snowdon Ultra 50

Snowdon Ultra 100

Snowdonia Sea2Sky 50K

Maverick Kielder Forest 50k

Rasselbock Hardwick Hall BYU

Mackyard x 4ZERO Ultra

RIDUM 50K

Dartmoor in a Day

Dragons Back Race

The LAP Anticlockwise

Robin Hood 100

Yellow Belly Ultra 50 - Summer

Suffolk Coastal Path 50K

EXPLORE UPCOMING UK ULTRAMARATHONS

Latest Running News

UTMB Mandatory Red Light Rule for 2026

Ex-Rugby Pro Runs 100 Ultras in 100 Days For Brain Injury Awareness

Salomon Launches UK Repair Programme

UTMB Ultra-Trail Snowdonia 100K - Race Report

Backyard Ultra Kit List

Yellow Belly Backyard Ultra - Race Report

FAQs

What is an ultramarathon?

How can I search for ultra marathons in my area?

How often are ultra marathons added or updated?

Can I recommend or add a race to your site?

Do I have to pay to use the website?

What does the 'elevation' filter refer to?

I'm new to ultra running, any tips?

How do I find an ultra marathon in the UK?

What is the best ultra finder?

Got your mandatory kit sorted?