Half Marathon
Sun 28 Sep 2025 Welwyn Garden City, Hertfordshire, UK

ATW Welwyn Half Marathon

The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park with an ideal, traffic-free, disused railway line in between.

  • Sun 28 Sep 2025
BETTER Gosling Sports Park, Welwyn Garden City

Half Marathon

09:30

Age 17 & over

£30-£36

  • 13.1 miles road running

Event overview

Taking place in September, it's a perfect time for a half marathon!

The course is accurately measured and held under a full UK Athletics race license. The race is chip-timed by our professional timing partner, Event Chip Timing and your results will appear on PowerOf10. 

This event is more than just a run. You’ll be warmed up with personal trainers, welcomed home by a professional commentator and your cheer-squad will be kept fed and watered by quality caterers while you run.

Running with friends or family? Purchase a Group Saver Ticket (minimum 2 people, max 10)

A free 400m Children’s Fun Run will also take place on the running track 15 mins before the half-marathon start (no need to book, just turn up to registration). Parents are welcome to run with their kids and use it as a warm-up for the main event!

Highlights

  • Fun for the family
  • Well marked course
  • Supportive marshals
  • Custom designed medal
  • Free event photos
  • Finish line snacks and goodies
  • Positive reviews from previous participants

This event is part of ATW Welwyn Half Marathon & 10K.

Event details

  • All fitness levels
  • Event village
  • Families
  • Newcomers

  • Paid parking
  • Park

Event HQ

BETTER Gosling Sports Park
Stanborough Road
Welwyn Garden City
Hertfordshire
AL8 6XE
UK

Parking

Limited paid parking is available at the race venue with additional parking locations available in Welwyn Town centre. Further details will be provided in the pre-race information. 

  • Cut off time
  • Distance markers
  • First aid
  • Marshals
  • Traffic free
  • Water stations
  • Way markers

Overview

The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park. You will be directed out of the stadium, towards the Cole Green Way – a disused railway line which is now a perfect traffic-free track to run along. After this traffic free section you will complete a short loop to bring you back onto the Cole Green Way again. You then complete the first section in reverse and finish on the track at Gosling Sports Park.

Cut off

3 hours.

  • Bring your own cup
  • Recycling
  • Sustainability policy

Here are the ways this event cares for the environment:

Summary

  • Recycling bins
  • Recycling gets separated from general waste
  • Finish line water bottles made from recycled material
  • Refill taps are provided so participants can bring their own bottle and fill up during the event
  • The choice of paper cups at water stations
  • Signage including course marking attached with reusable garden wire instead of plastic cable ties
  • 'Dynamic bib assignment’ removes the need for envelopes, sticker labels and excess waste
  • Bike racking is provided to promote cycling to the events

  • Chip timing
  • Goody bag
  • Medal
  • Post-race meal
  • Race photo

Included

  • Custom designed medal
  • Free event photos
  • Finish line snacks & goodies

  • Age 17 & over
  • Entries open
  • Enter online

Entry fees

Entry fee (Unaffiliated)

£36.00

Entry fee (Affiliated)

£34.00

Early bird entry fee

£30.00

Early bird entry fee

£32.00

Run this race every year and it is a brilliant out and back course that finishes on the running track allowing you to have your own Olympic moment. James M

Great event great atmosphere - enjoyable course. Thank you. Sam B

Good event, well marshalled by local running club. Really good quality T shirt, which came as quite a surprise for the modest entry fee. David S

My 4th ish Welwyn Half Marathon. As usual, the event starts off at the Gosling athletics track, and really pleased that the organisers have listened to feedback and you now run more of the track, which is a great exciting start to the race. Also the family fun run at the start is an excellent idea, more races should do this - my kids loved it. Well sign posted throughout, and a mix of different surfaces, with a couple of gradual gradients, make this a more challenging than your run of the mill pavement half. Really good race for local runners. James D

Reviews thanks to RaceCheck

Other races at event

  • Sun 28 Sep 2025
  • #1 of 3
BETTER Gosling Sports Park, Welwyn Garden City

Children’s Fun Run

09:15

All ages

FREE

  • 400 m track and field
  • Sun 28 Sep 2025
  • #3 of 3
BETTER Gosling Sports Park, Welwyn Garden City

10K

09:30

Age 16 & over

£22-£24

  • 10 km road running