- Sun 4 Oct 2026
- Early bird
Early bird on now
09:30
Age 17 & over
£31-£33
- 13.1 miles road running + 400 ft ascent
Event overview
Taking place in autumn, it's a perfect time for a half marathon!
Experience an autumn classic with the Welwyn Half Marathon and 10K, starting and finishing on the impressive athletics track at Gosling Sports Park. The scenic half marathon route guides you through leafy Welwyn and along the peaceful Cole Green Way, while the multi-terrain 10K shares the opening stretch before branching off for its own unique loop. Both races conclude with a memorable lap of the track, ensuring an exciting finish for every runner.
With a friendly atmosphere, lively pre-race warm-up, and a professionally commentated finish, this event is designed for all abilities. Family and friends can enjoy on-site catering, and younger runners are invited to take part in a free 400m fun run on the track. Fully licensed by UK Athletics and chip-timed for accuracy, the Welwyn Half Marathon and 10K promises a rewarding experience for all participants.
Highlights
- Starts and finishes on a 400m athletics track
- Scenic, well-marked multi-terrain routes
- Free 400m children’s fun run
- Lively pre-race warm-up with personal trainers
- Professional chip timing and UKA licensing
- Custom-designed medal for all finishers
- Free professional race photos
- Finish line snacks and goodies
- Three-hour cut-off time
- Friendly marshals and buzzing event village
- On-site food and drink for spectators
This event is part of ATW Welwyn Half Marathon & 10K.
Event photos
Event details
- Average fitness
- Event village
- Families
- Newcomers
- Cut off time
- Distance markers
- First aid
- Marshals
- Traffic free
- Water stations
- Way markers
- GPX available
GPX route
The route is displayed on the map above.
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 β 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.
Map

Cut off
3 hours.
- 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.
- Chip timing
- Drinks
- Goody bag
- Medal
- Race photo
- Snacks
Included
- Custom designed medal
- Free event photos
- Finish line snacks and goodies
Optional extras
- ICE Band - Β£22.94
- Personalised Medal Insert - Β£9
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
Great event, great atmosphere, enjoyable course, thank you. Sam B
Welwyn Half Marathon was the perfect race for me: - a challenging but not too challenging course, opportunity to practice marathon race pace, great track finish. Nick G
Really enjoyed this half marathon and look forward to taking part again. Lee M
Reviews thanks to RaceCheck
- 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 assignmentβ removes the need for envelopes, sticker labels and excess waste
- Bike racking is provided to promote cycling to the events
- Age 17 & over
- Entries open
- Enter online
Entry fees
Early bird entry fee
£31.00
Early bird entry fee
£33.00
Other races at event
- Sun 4 Oct 2026
- #1 of 0
09:15
All ages
FREE
- 400 m track and field
- Sun 4 Oct 2026
- #3 of 0
09:30
Age 16 & over
£23-£25
- 10 km road running + 190 ft ascent