19

Trail Half marathons in South East in March 2026

Find trail half marathons in South East in March 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

Filter by place

Filter by date

Filter by category

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

Here's another animal-inspired event for you. The featured animal this time is a panda! The medal, as always, is incredible and definitely one to add to your collection!
  • Sat 7 Mar
  • £16-£35
Staines, Surrey, UK

The Panda Plod

Here's another animal-inspired event for you. The featured animal this time is a panda! The medal, as always, is incredible and definitely one to add to your collection!

  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
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.
  • Sat 7 Mar
  • £33-£35
Staines, Surrey, UK

London Marathon Long Training Run | Day 1

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.

  • 7 hrs trail running
Enjoy stunning coastal views on this flexible-distance run at Milford on Sea, following an out-and-back route beside Sturt Pond and the Isle of Wight — perfect for all abilities.
  • Sun 8 Mar
  • £37.50-£39.50
Lymington, Hampshire, UK

Wight Riot

Enjoy stunning coastal views on this flexible-distance run at Milford on Sea, following an out-and-back route beside Sturt Pond and the Isle of Wight — perfect for all abilities.

  • 7 hrs multi terrain running + 47 ft ascent
Come and join in for The Hull Run, where you can run anywhere from 3km to running for the entire 7 hours, as always it's a super fleixble and inclusive event for everyone to enjoy!
  • Sun 8 Mar
  • £23-£35
Staines, Surrey, UK

One ‘Hull’ Of A Run | Half Marathon

Come and join in for The Hull Run, where you can run anywhere from 3km to running for the entire 7 hours, as always it's a super fleixble and inclusive event for everyone to enjoy!

  • 13.1 miles trail running
Come and join in The Sloth Scamper, slow is the new fast and you can earn yourself a medal with an adorable sloth on to boot - anyone know what a group of sloths is called?
  • Sat 14 Mar
  • £16-£35
Staines, Surrey, UK

The Sloth Scamper

Come and join in The Sloth Scamper, slow is the new fast and you can earn yourself a medal with an adorable sloth on to boot - anyone know what a group of sloths is called?

  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
Come and join The Flying Fox event! Are you as cunning and as quick as a fox and fancy showcasing your running skills?
  • Sat 21 Mar
  • £16-£35
Staines, Surrey, UK

The Flying Fox

Come and join The Flying Fox event! Are you as cunning and as quick as a fox and fancy showcasing your running skills?

  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
Build marathon confidence on a fully supported long run, choosing your distance, fuelling every lap and training smart in a relaxed, friendly environment with like-minded runners.
  • Sat 21 Mar
  • £33-£35
Staines, Surrey, UK

London Marathon Long Training Run | Day 3

Build marathon confidence on a fully supported long run, choosing your distance, fuelling every lap and training smart in a relaxed, friendly environment with like-minded runners.

  • 7 hrs trail running
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.
  • Sat 28 Mar
  • £33-£35
Staines, Surrey, UK

London Marathon Long Training Run | Day 4

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.

  • 7 hrs trail running
"My milkshake brings all the boys to the yard"... not quite sure where we're going with this but come and join this fantasic Milkshake Meander event!
  • Sat 28 Mar
  • £23-£35
Staines, Surrey, UK

Milkshake Meander | Half Marathon

"My milkshake brings all the boys to the yard"... not quite sure where we're going with this but come and join this fantasic Milkshake Meander event!

  • 13.1 miles trail running
A new and unique concept where you decide how many loops you feel capable of on the day from 10km up to an ultra marathon! Push yourself further or go easy.
  • Sun 29 Mar
  • £26-£37.50
Gerrards Cross, Buckinghamshire, UK

Running Tribe Races | Mar

A new and unique concept where you decide how many loops you feel capable of on the day from 10km up to an ultra marathon! Push yourself further or go easy.

  • 1 day multi terrain running
  • Sun 1 Mar
  • £32
Fordingbridge, Hampshire, UK

Up on the Downs | Half Marathon

  • 13.1 miles trail running
  • Fri 6 Mar
  • £20-£27
Staines, Surrey, UK

Midweek Chasing Numbers Mar | Half Marathon

  • 13.1 miles trail running
  • Sat 7 Mar
  • £47
Eastbourne, East Sussex, UK

EnduranceLife - Sussex | Half Marathon

  • 13.1 miles trail running + 2185 ft ascent
  • Sun 8 Mar
  • £39
Dorking, Surrey, UK

Leith Hill Half Marathon

  • 13.1 miles trail running + 1778 ft ascent
  • Sun 22 Mar
  • £35-£37
Milton Keynes, Buckinghamshire, UK

Twin Lakes 20 | 20 Mile

  • 20 miles multi terrain running
  • Sun 29 Mar
  • £42
Arundel, West Sussex, UK

Springtide Half Marathon

  • 13.5 miles trail running + 1175 ft ascent

Search options

Back to search options
4 steps to wellbeing
Sleep well

A good night's sleep is an essential foundation for a healthy lifestyle, effective training and weight control.

Train slow

Low-intensity training is easier for you, reduces the risk of injury and helps builds an efficient aerobic system.

Eat natural

Cut out sugar & junk food, reduce carbs, eat natural foods and train your body to burn fat for fuel.

Get outdoors

Fresh air, natural light and reconnecting with nature all help to improve mental and physical wellbeing.