Flat Ultra runs in UK in April 2026
Find flat ultra runs in UK in April 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 4 Apr 2026
- £33-£35
London Marathon Long Training Run | Day 5
Build marathon confidence on a fully supported long run, choosing your distance, fuelling every lap and training smart in a relaxed, friendly environment with likeminded runners.
- Beginner-friendly
- Enter online
- Flat
- Traffic free
- Fancy dress
- Event village
- Age 17 & over
- 7 hrs trail running
- Sun 5 Apr 2026
- £54-£56
Lets Motor along the Towpath | Rodley | Ultra Marathon
You'd be an April Fool to miss this one. Enjoy a trip up the flat and event towpath of the Leeds and Liverpool Canal from Rodley. One to warm the depths of your heart.
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 21 & over
- 33 miles trail running + 528 ft ascent
- Sat 11 Apr 2026
- £16-£35
Love it or Hate it Run
Whether you are in the love it or hate it camp, I think we can all agree that the medal is super cute and definitely one which you need to add to your collection!
- Families
- Beginner-friendly
- Event village
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 12 Apr 2026
- £18-£36
The Dashing Dog Charity Run | North
Come and join the Dashing Dog Charity run along the picturesque River Wear. Not only is the scenery beautiful but you will earn one of these awesome medals!
- Families
- Beginner-friendly
- Dogs allowed at venue
- Event village
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 18 Apr 2026
- £16-£35
The London Run
Not made it into The London Marathon but still fancy getting a super awesome medal based on the iconic race set in the capital city?
- Families
- Beginner-friendly
- Event village
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Wed 22 - Sun 26 Apr 2026
- £100-£350
- Early bird
Thames Ring Series
Take on this legendary 250-mile ultra following rivers and canals in a gruelling anti-clockwise loop through stunning countryside and historic towns within 100 hours.
Early bird on now
- Beginner-friendly
- Event village
- Urban
- Rural
- Age 18 & over
- Ultra run 3