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Road Marathons in UK in March 2026

Find road marathons in UK in March 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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Come and join the Dashing Dog Charity run in the picturesque Dare Valley Country Park. Not only is the scenery beautiful but you will earn one of these awesome medals for your marathon!
  • Sun 15 Mar
  • £24-£38
Aberdare, Mid Glamorgan, UK

The Dashing Dog Charity Run | Wales | Marathon

Come and join the Dashing Dog Charity run in the picturesque Dare Valley Country Park. Not only is the scenery beautiful but you will earn one of these awesome medals for your marathon!

  • 26.2 miles road running
  • Enter online
  • Flat
  • Traffic free
  • Age 18 & over
The Hillingdon 20, (formerly the Finchley 20), is the longest-running 20-mile race in the UK. A hilly 20 mile road race, an ideal build-up to the London or other spring marathons.
  • Sun 22 Mar
  • £32-£34
Ruislip, UK

Hillingdon 20

The Hillingdon 20, (formerly the Finchley 20), is the longest-running 20-mile race in the UK. A hilly 20 mile road race, an ideal build-up to the London or other spring marathons.

  • 20 miles road running + 738 ft ascent
  • Beginner-friendly
  • Chip timing
  • Enter online
  • Hilly
  • Event village
  • Age 18 & over
Come and join in for Dashing Dog Charity run along the picturesque River Thames, not only is the scenery beautiful and you will earn one of the awesome medals for your marathon!
  • Sun 22 Mar
  • £25-£40
Staines, Surrey, UK

The Dashing Dog Charity Run | Marathon

Come and join in for Dashing Dog Charity run along the picturesque River Thames, not only is the scenery beautiful and you will earn one of the awesome medals for your marathon!

  • 26.2 miles road running
  • Enter online
  • Flat
  • Traffic free
  • Age 18 & over
A delectable racing experience perfect for those planning a spring marathon, over a pancake flat course using the wide, quiet country lanes surrounding the marsh town of Lydd in Kent.
  • Sun 29 Mar
  • £33
Romney Marsh, Kent, UK

Brett Lydd 20 Mile

A delectable racing experience perfect for those planning a spring marathon, over a pancake flat course using the wide, quiet country lanes surrounding the marsh town of Lydd in Kent.

  • 20 miles road running + 3 ft ascent
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 18 & over
  • Sun 8 Mar
Burry Port, Dyfed, UK

Great Welsh Marathon Events | Full Marathon

  • 26.2 miles road running + 363 ft ascent
  • Sun 22 Mar
Redhill, Surrey, UK

Y2Y North Downs Trek / Run | Marathon Run

  • 26.2 miles road running + 3025 ft ascent

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