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Flat Half marathons in UK

Find flat half marathons in UK in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Run a half marathon on the island of Jersey from St Ouen in the west to the capital, St Helier, in the south along a fantastically flat and scenic course with a 5K downhill into the finish!
  • Sun 22 Mar 2026
  • £45
Jersey, Jersey

The Hospice Half Marathon

Run a half marathon on the island of Jersey from St Ouen in the west to the capital, St Helier, in the south along a fantastically flat and scenic course with a 5K downhill into the finish!

  • Newcomers
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Event village
  • Age 17 & over
  • 13.1 miles road running + 106 m ascent
Smash your personal best on a traffic-free, flat and fast course from the White Water Centre and into surrounding beautiful regional parkland with a custom-designed medal for finishers.
  • Sun 22 Mar 2026
  • £34-£36
Waltham Cross, Hertfordshire, UK

ATW Run Fest at Lee Valley | Half Marathon

Smash your personal best on a traffic-free, flat and fast course from the White Water Centre and into surrounding beautiful regional parkland with a custom-designed medal for finishers.

  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 79 ft ascent
The Kew Half Marathon starts inside Kew Gardens and every runner will receive a fantastic medal, a technical running t-shirt (male and female cut) and free entry into the gardens!
  • Sun 29 Mar 2026
  • £43-£50
  • 4 charities
Richmond, UK

Kew Gardens Half Marathon

The Kew Half Marathon starts inside Kew Gardens and every runner will receive a fantastic medal, a technical running t-shirt (male and female cut) and free entry into the gardens!

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 85 m ascent
Spring along the Leeds and Liverpool Canal with the Spring Tide Sir Titus Trot along the flat, even towpath. Perfect for all abilities, it tends to sell out very quickly.
  • Sun 29 Mar 2026
  • £29-£31
Shipley, West Yorkshire, UK

Sir Titus March Mayhem | Half Marathon

Spring along the Leeds and Liverpool Canal with the Spring Tide Sir Titus Trot along the flat, even towpath. Perfect for all abilities, it tends to sell out very quickly.

  • Chip timing
  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles trail running + 253 ft ascent
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 2026
  • £31
Romney Marsh, Kent, UK

Brett Lydd Half Marathon

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.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 17 & over
  • 13.1 miles road running + 0 ft ascent
Lace up your trainers and RUN Battersea Park Half which will be a scenic and energising experience on a pancake-flat course for all abilities with beautiful views of green spaces and the River Thames.
  • Sun 29 Mar 2026
  • £29-£31
London, UK

RUN Battersea Park Half Marathon Spring

Lace up your trainers and RUN Battersea Park Half which will be a scenic and energising experience on a pancake-flat course for all abilities with beautiful views of green spaces and the River Thames.

  • Newcomers
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Event village
  • Park
  • Age 18 & over
  • 13.1 miles road running
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.
  • Sun 5 Apr 2026
  • £30-£32
Leeds, West Yorkshire, UK

Lets Motor along the Towpath | Rodley | Half 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 17 & over
  • 13.1 miles trail running + 105 ft ascent
A spirited Central London run with live music, upbeat DJs, street-dancers and inspiring themes on a landmark-packed route with closed roads.
  • Sun 12 Apr 2026
  • £67.50
  • 6 charities
London, UK

London Landmarks Half Marathon

A spirited Central London run with live music, upbeat DJs, street-dancers and inspiring themes on a landmark-packed route with closed roads.

  • Families
  • Venue accessible
  • Recycling
  • Newcomers
  • Plastic bottle free
  • Entertainment
  • Music
  • Ballot
  • Chip timing
  • Enter online
  • GPS tracking
  • Flat
  • PB
  • Traffic free
  • Fancy dress
  • Event village
  • Urban
  • Sustainability policy
  • Public transport links
  • Age 17 & over
  • 13.1 miles road running
Enjoy a fully closed road race, on flat coastal roads with a spectacular seafront finish. Chance to take home a PB along with the finishers' t-shirt and medal.
  • Sun 3 May 2026
  • £36-£42
  • 3 charities
Worthing, West Sussex, UK

Worthing RUNFEST Half Marathon

Enjoy a fully closed road race, on flat coastal roads with a spectacular seafront finish. Chance to take home a PB along with the finishers' t-shirt and medal.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 37 m ascent
Come and join the day of running and aim to complete a midweek half marathon within the 7-hour time limit on a scenic course then receive a fantastic medal and goody bag at the finish!
  • Mon 4 May 2026
  • £20-£27
Staines, Surrey, UK

Bank Holiday Madness May | Half Marathon

Come and join the day of running and aim to complete a midweek half marathon within the 7-hour time limit on a scenic course then receive a fantastic medal and goody bag at the finish!

  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles trail running + 0 ft ascent
A popular, fast, scenic AIMS-certified race, with BARR Gold accreditation for outstanding race management featuring beautiful lakes, parks, and picturesque villages with the highest level of support.
  • Mon 4 May 2026
  • £40-£50
Milton Keynes, Buckinghamshire, UK

MK Half Marathon

A popular, fast, scenic AIMS-certified race, with BARR Gold accreditation for outstanding race management featuring beautiful lakes, parks, and picturesque villages with the highest level of support.

  • Chip timing
  • Enter online
  • GPS tracking
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 518 ft ascent
Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.
  • Sun 17 May 2026
  • £37.50-£39.50
Bournemouth, Dorset, UK

SoBo Series | Volume 3 | Good Vibrations

Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.

  • Newcomers
  • Enter online
  • Flat
  • Traffic free
  • Event village
  • Coast
  • Age 18 & over
  • 7 hrs road running + 0 ft ascent
Just before the Marathon, the Half follows the same fast and flat route from the iconic castle and city sights to the coast for an explosive finish and offers genuine PB potential.
  • Sun 24 May 2026
  • £46.25
  • 8 charities
Edinburgh, UK

Edinburgh Half Marathon

Just before the Marathon, the Half follows the same fast and flat route from the iconic castle and city sights to the coast for an explosive finish and offers genuine PB potential.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 76 m ascent
Based out of East Hull this race will run out on the TransPennine Trail towards Hornsea, it should allow runners to enjoy a flat even surface ideal or both beginners or for seasoned athletes...
  • Sun 24 May 2026
  • £30-£32
Hull, East Yorkshire, UK

Get the Hull out of Here | Half Marathon

Based out of East Hull this race will run out on the TransPennine Trail towards Hornsea, it should allow runners to enjoy a flat even surface ideal or both beginners or for seasoned athletes...

  • Enter online
  • Flat
  • PB
  • Age 17 & over
  • 13.1 miles trail running + 33 ft ascent
The city’s original and best-loved running event! It's a party from start to finish with a high-energy soundtrack and live music. Over 99% of Manchester runners say they’d recommend it to a friend.
  • Sun 31 May 2026
  • £50-£55
  • 3 charities
Manchester, Greater Manchester, UK

Great Manchester Run Half Marathon

The city’s original and best-loved running event! It's a party from start to finish with a high-energy soundtrack and live music. Over 99% of Manchester runners say they’d recommend it to a friend.

  • Chip timing
  • Enter online
  • GPS tracking
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running
In its sixth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?
  • Sun 31 May 2026
  • £34-£36
Ware, Hertfordshire, UK

Circuit Du Sore Legs | Half Marathon

In its sixth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 18 & over
  • 13.1 miles track and field
Coastal paths with a satisfying mix of hills plus flatter, faster sections on a multi-lap route round the stunning Mount Edgcumbe Peninsula — a spectacular half marathon coastal challenge.
  • Sat 13 Jun 2026
  • £28
Torpoint, Cornwall, UK

Rame Head Race | Half Marathon

Coastal paths with a satisfying mix of hills plus flatter, faster sections on a multi-lap route round the stunning Mount Edgcumbe Peninsula — a spectacular half marathon coastal challenge.

  • Chip timing
  • Enter online
  • Flat
  • Hilly
  • Age 16 & over
  • 13.1 miles trail running + 2092 ft ascent
Enjoy a trip up the Leeds and Liverpool Canal this summer over a range of distances, all along the flat and even towpath. This event is perfect for runners of all abilities.
  • Sat 15 Aug 2026
  • £28-£30
Shipley, West Yorkshire, UK

Sir Titus Summer Trot | Half Marathon

Enjoy a trip up the Leeds and Liverpool Canal this summer over a range of distances, all along the flat and even towpath. This event is perfect for runners of all abilities.

  • Chip timing
  • Enter online
  • Flat
  • Age 18 & over
  • 13.1 miles trail running + 253 ft ascent
It's the crash of waves and the sea-salt that lingers in the cool coastal air. It's your moment to fly along the promenade in this cracking half marathon. It's a seaside racing extravaganza!
  • Sun 16 Aug 2026
  • £31-£33
Clacton-on-Sea, Essex, UK

Clacton Half Marathon

It's the crash of waves and the sea-salt that lingers in the cool coastal air. It's your moment to fly along the promenade in this cracking half marathon. It's a seaside racing extravaganza!

  • Chip timing
  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles road running + 180 ft ascent
A seriously flat and rapid point-to-point course with a downhill profile along the coast to finish in the final furlong of Scotland's oldest racecourse plus grandstand finish. Come and be part of it!
  • Sun 16 Aug 2026
  • £46.75
  • 4 charities
Tranent, East Lothian, UK

Scottish Half Marathon

A seriously flat and rapid point-to-point course with a downhill profile along the coast to finish in the final furlong of Scotland's oldest racecourse plus grandstand finish. Come and be part of it!

  • Venue accessible
  • Recycling
  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Fancy dress
  • Event village
  • Urban
  • Coast
  • Sustainability policy
  • Public transport links
  • Age 17 & over
  • 13.1 miles road running + 57 m ascent
We all love to be beside the seaside, so why not enjoy a trail half marathon from the coast at Hornsea? You can grab yourself fish and chips and an ice cream from the front after the race.
  • Sat 5 Sep 2026
  • £30-£32
Hornsea, East Yorkshire, UK

Hip Hip Hooray it's Hornsea | Half Marathon

We all love to be beside the seaside, so why not enjoy a trail half marathon from the coast at Hornsea? You can grab yourself fish and chips and an ice cream from the front after the race.

  • Chip timing
  • Enter online
  • Flat
  • Age 17 & over
  • 13.1 miles trail running + 161 ft ascent
The Big Half promises a party atmosphere on a landmark-packed, half marathon route which follows some of the famous marathon course in reverse!
  • Sun 6 Sep 2026
  • £59.99
  • 12 charities
London, UK

The Big Half

The Big Half promises a party atmosphere on a landmark-packed, half marathon route which follows some of the famous marathon course in reverse!

  • Families
  • Trees not tees
  • Venue accessible
  • Recycling
  • Newcomers
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • GPS tracking
  • Flat
  • Traffic free
  • Fancy dress
  • Event village
  • Event expo
  • Urban
  • Sustainability policy
  • Age 17 & over
  • 13.1 miles road running + 218 ft ascent
13.1 miles of traffic free, stunning Bedfordshire countryside followed by a festival village with live music, street food, yoga, entertainment and more at the unforgettable post-race party.
  • Sun 6 Sep 2026
  • £32-£34
Bedford, Bedfordshire, UK

Bedford Half Marathon

13.1 miles of traffic free, stunning Bedfordshire countryside followed by a festival village with live music, street food, yoga, entertainment and more at the unforgettable post-race party.

  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 59 ft ascent
Be part of London's most exclusive event! Run through its greenest borough, exploring the beauties and history of Richmond. Start inside the Kew Gardens with a family music festival to finish!
  • Sun 13 Sep 2026
  • £43-£50
  • 5 charities
Richmond, UK

Richmond Half Marathon

Be part of London's most exclusive event! Run through its greenest borough, exploring the beauties and history of Richmond. Start inside the Kew Gardens with a family music festival to finish!

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 17 & over
  • 13.1 miles road running + 91 ft ascent
Get your Oompah vibe on and enjoy a trip up the Leeds and Liverpool Canal. A half marathon to warm the depths of your heart along the flat, even towpath - this event is perfect for all abilities.
  • Sat 19 Sep 2026
  • £30-£32
Leeds, West Yorkshire, UK

Oktoberfest | Half Marathon

Get your Oompah vibe on and enjoy a trip up the Leeds and Liverpool Canal. A half marathon to warm the depths of your heart along the flat, even towpath - this event is perfect for all abilities.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Age 17 & over
  • 13.1 miles trail running + 105 ft ascent

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