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Flat Half marathons in May 2026

Find flat half marathons near me in May 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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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
  • £40-£42
Worthing, West Sussex

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.

  • 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
  • £15-£27
Staines, Surrey

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!

  • 13.1 miles trail running
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
  • £40-£50
Milton Keynes, Buckinghamshire

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.

  • 13.1 miles road running + 518 ft ascent
Entries closed
The All Nations run is a chance to don your country colours and feel like you are running for your country! Whatever your level of running, this event is open to all and a great one to be part of!
  • Sat 9 May
  • £30-£35
Windsor, Buckinghamshire

The All Nations Triathlon, 5K, 10K and Half Marathon Run | Half Marathon

The All Nations run is a chance to don your country colours and feel like you are running for your country! Whatever your level of running, this event is open to all and a great one to be part of!

  • 13.1 miles road running
The Magna Carta Half Marathon is based in scenic Runnymede right near the historic site where the treaty of Magna Carta was agreed by King John of England and signed on 15th June 1215.
  • Sat 9 May
  • £43-£45
Egham, Surrey

Magna Carta Summer | Half Marathon

The Magna Carta Half Marathon is based in scenic Runnymede right near the historic site where the treaty of Magna Carta was agreed by King John of England and signed on 15th June 1215.

  • 13.1 miles trail running + 70 ft ascent
Come and join the Spring Lucky Dip Run! There is no set medal for this race; instead, you will get to choose your own from a selection of medals from past events!
  • Sun 10 May
  • £15-£35
Staines, Surrey

The Spring Lucky Dip Run

Come and join the Spring Lucky Dip Run! There is no set medal for this race; instead, you will get to choose your own from a selection of medals from past events!

  • Trail run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
Run the beautiful Kent coastline from Whitstable to Herne Bay in this friendly spring event, offering a 10K for runners of all abilities.
  • Sun 10 May
  • £30-£35
Herne Bay, Kent

Run Whitstable & Herne Bay May 5K, 10K and Half Marathon | Half Marathon

Run the beautiful Kent coastline from Whitstable to Herne Bay in this friendly spring event, offering a 10K for runners of all abilities.

  • 13.1 miles road running
Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?
  • Sat 16 May
  • £15-£35
Staines, Surrey

Rocky at 50 Run

Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?

  • Road run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
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
  • £37.50-£39.50
Bournemouth, Dorset

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.

  • 7 hrs road running
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
  • FREE-£40
Edinburgh

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.

  • 13.1 miles road running + 76 m ascent
Entries closed
Based out of East Hull this half marathon 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
  • £30-£32
Hull, East Yorkshire

Get the Hull out of Here | Half Marathon

Based out of East Hull this half marathon 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.

  • 13.1 miles trail running
Set in one of East London’s iconic green spaces, this event offers a flat, scenic half marathon route through Victoria Park alongside 5K and 10K options on the same day, ideal for all abilities.
  • Sun 24 May
  • £31-£33
London

RUN Victoria Park Half Marathon

Set in one of East London’s iconic green spaces, this event offers a flat, scenic half marathon route through Victoria Park alongside 5K and 10K options on the same day, ideal for all abilities.

  • 13.1 miles road running
Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?
  • Sat 30 May
  • £14-£34
Aberdare, Mid Glamorgan

Rocky at 50 Run | Wales

Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?

  • Road run
  • 5K run
  • 10K run
  • Half marathon
  • Marathon
  • + 3 more races
The city’s original and best-loved running event! In true Mancunian style, it’s a party from start to finish. Over 99% of Manchester runners say they’d recommend it to a friend.
  • Sun 31 May
  • £52-£55
Manchester, Greater Manchester

Great Manchester Run Half Marathon

The city’s original and best-loved running event! In true Mancunian style, it’s a party from start to finish. Over 99% of Manchester runners say they’d recommend it to a friend.

  • 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
  • £34-£36
Ware, Hertfordshire

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?

  • 13.1 miles track and field
  • Sun 3 May
  • €36-€45
Italy

Lucca Half Marathon

  • 21.1 km road running
  • Sun 3 May
  • €40-€50
Italy

Trieste Spring Run - Trieste 21K

  • 21 km road running
  • Sun 10 May
  • £32
Richmond

Ranelagh Half Marathon

  • 13.1 miles road running + 84 m ascent
  • Sun 10 May
  • €25
Italy

Bibione Half Marathon

  • 21 km road running
  • Sun 10 May
  • £44
Wirral, Merseyside

Love 2 Run | Half Marathon

  • 13.1 miles road running
  • Sun 10 May
  • £40-£42
Crawley, West Sussex

Run Gatwick | Half Marathon

  • 13.1 miles road running
  • Sun 10 May
  • £30-£32
Hereford, Herefordshire

RUN Hereford | Half Marathon

  • 13.1 miles road running + 81 m ascent
  • Sat 16 May
  • €31-€45
Italy

Jesolo Moonlight Half Marathon

  • 21.1 km road running
  • Sun 17 May
  • €28-€59
Latvia

Rimi Riga Marathon | Half Marathon

  • 21 km road running
  • Sun 17 May
  • €80-€95
Austria

PUMA Salzburg Marathon | Salzburger Sparkasse Half Marathon

  • 21.1 km road running

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