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Flat 5K runs in UK in Spring

Find flat 5k runs in UK in Spring - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Join this fantastic experience on a completely flat course – perfect for achieving your personal best over a certified, accurate route, with free race photo, custom medal and friendly support!
  • Sun 8 Mar 2026
  • £20-£22
Nottingham, Nottinghamshire, UK

ATW Nottingham Holme Run | 5K

Join this fantastic experience on a completely flat course – perfect for achieving your personal best over a certified, accurate route, with free race photo, custom medal and friendly support!

  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 11 & over
  • 5 km road running + 7 ft ascent
Ready... Steady... GLOW! Expect to be swept away on a distinctly magical 5K experience as dusk falls on the home of two 30-metre high horses.
  • Fri 13 - Sat 14 Mar 2026
  • £26
Grangemouth, Falkirk, UK

Supernova Run Kelpies 5K

Ready... Steady... GLOW! Expect to be swept away on a distinctly magical 5K experience as dusk falls on the home of two 30-metre high horses.

  • Families
  • Venue accessible
  • Recycling
  • Beginner-friendly
  • Fancy dress
  • Urban
  • Free venue entry
  • Sustainability policy
  • Public transport links
  • All ages
  • 5K run 2
This disused airfield has a fast, flat, tarmac course with no sharp corners, and the surrounding tree cover makes for relatively still conditions on most days - but your PB or run stress-free.
  • Sun 15 Mar 2026
  • £16-£18
Saffron Walden, Essex, UK

ATW Debden 5K

This disused airfield has a fast, flat, tarmac course with no sharp corners, and the surrounding tree cover makes for relatively still conditions on most days - but your PB or run stress-free.

  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 11 & over
  • 5 km road running + 46 ft ascent
Kickstart your season with the Flapjack 5K — a friendly, fast, and flat run on Torbay Velopark’s smooth tarmac, with a delicious flapjack reward at the finish!
  • Sun 15 Mar 2026
  • £10-£18
Paignton, Devon, UK

Flapjack 5K

Kickstart your season with the Flapjack 5K — a friendly, fast, and flat run on Torbay Velopark’s smooth tarmac, with a delicious flapjack reward at the finish!

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 11 & over
  • 5 km road running
Gear up for an adrenaline-packed 5K running experience like no other at Mallory Park Motor Racing Circuit with fast laps, great support and distances suited to every runner’s goals.
  • Sun 12 Apr 2026
  • £20-£22
Kirkby Mallory, Leicestershire, UK

ATW Mallory Park Runs | 5K

Gear up for an adrenaline-packed 5K running experience like no other at Mallory Park Motor Racing Circuit with fast laps, great support and distances suited to every runner’s goals.

  • Chip timing
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Age 11 & over
  • 5 km road running + 144 ft ascent
An evening 5K ending at a lovely beer garden in the heart of Citu’s Climate Innovation District - grab a picnic bench, a pint of craft beer and admire the views. The perfect spot for a sunny evening!
  • Wed 29 Apr 2026
  • £22
Leeds, West Yorkshire, UK

Piglove by the River 10K & 5K | 5K

An evening 5K ending at a lovely beer garden in the heart of Citu’s Climate Innovation District - grab a picnic bench, a pint of craft beer and admire the views. The perfect spot for a sunny evening!

  • Enter online
  • Flat
  • Age 18 & over
  • 5 km trail running + 193 m ascent
Shoot for the stars on the rapid Rocket Run! Join this fast rocket-fueled 5K with an 'out of this world' bling on a fast and flat point-to-point course from central Milton Keynes to Stadium MK.
  • Sun 3 May 2026
  • £18-£28
Milton Keynes, Buckinghamshire, UK

MK Marathon Weekend | Rocket 5K

Shoot for the stars on the rapid Rocket Run! Join this fast rocket-fueled 5K with an 'out of this world' bling on a fast and flat point-to-point course from central Milton Keynes to Stadium MK.

  • Chip timing
  • Enter online
  • Flat
  • Undulating
  • PB
  • Traffic free
  • Age 12 & over
  • 5 km road running + 89 ft ascent
Come and join the day of running and aim to complete a 5K at your own pace 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 | 5K

Come and join the day of running and aim to complete a 5K at your own pace on a scenic course then receive a fantastic medal and goody bag at the finish!

  • Enter online
  • Flat
  • Age 12 & over
  • 5 km trail running + 0 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.

  • Beginner-friendly
  • Enter online
  • Flat
  • Traffic free
  • Event village
  • Coast
  • Age 18 & over
  • 7 hrs road running + 0 ft ascent
Based out of East Hull this 5K 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
  • £14-£16
Hull, East Yorkshire, UK

Get the Hull out of Here | 5K

Based out of East Hull this 5K 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 16 & over
  • 5 km trail running + 0 ft ascent
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
  • £27-£29
Ware, Hertfordshire, UK

Circuit Du Sore Legs | 5K

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 14 & over
  • 5 km track and field
  • Sun 1 Mar 2026
Cardiff, UK

St Davids Day Run | 5K

  • 5 km road running
  • Sun 15 Mar 2026
Milton Keynes, Buckinghamshire, UK

Milton Keynes Festival of Running | 5K

  • 5 km road running
  • Sun 15 Mar 2026
Birchington, Kent, UK

Smugglers Run 10K & 5K | 5K

  • 5 km road running
  • Sun 22 Mar 2026
Herne Bay, Kent, UK

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

  • 5 km road running
  • Sun 12 Apr 2026
Boston, Lincolnshire, UK

Boston UK Marathon | 5K Fun Run

  • 5 km road running
  • Sun 19 Apr 2026
Cambridge, Cambridgeshire, UK

Northstowe Half & Toms Trust 5K | Toms Trust 5K

  • 5 km multi terrain running
  • Sat 9 May 2026
Windsor, Buckinghamshire, UK

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

  • 5 km road running
  • Sun 10 May 2026
Hereford, Herefordshire, UK

RUN Hereford | 5K

  • 5 km road running + 15 m ascent
  • Sat 16 May 2026
London, UK

Hackney Moves | Hackney 5K

  • 5 km road running

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