ATW Welwyn Half Marathon
Join ATW Welwyn Half Marathon 2025
The popular Welwyn Half Marathon and 10k starts and finishes on the impressive 400m athletics track at Gosling Sports Park.
You will be directed out of the stadium, through the leafy outskirts of Welwyn where the Half Marathon heads 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 the Half will complete a short loop to bring you back onto the Cole Green Way again. You then reverse your route to finish on the track back at Gosling Sports Park.
2025 will see the inaugural 10k taking place, starting alongside the Half Marathon. The two races will follow the same route for the first 5km before heading back.
Taking place in Autumn, it's a perfect time for a half marathon.
This race will be operating a 3 hour cut off time, after which there will not be marshals and course signage available.
The event is held under a full UK Athletics race license and chip-timed by our professional timing partner, Event Chip Timing.
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.
The event will start at 09:30am. 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!
Course details
Start address: BETTER Gosling Sports Park, Stanborough Road, Welwyn Garden City, Hertfordshire AL8 6XE, UK
Finish address: BETTER Gosling Sports Park, Stanborough Road, Welwyn Garden City, Hertfordshire AL8 6XE, UK
Register
Registration closes on 27 September (159 days left)
selected tickets
Total
You can, within 24 hours after your registration, get a full refund if you change your mind.
We accept
What’s included
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done Finisher medal
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done Timing chip (single use)
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done Photo Service
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done Drink Stations
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done Nutrition Stations
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done Medical Assistance
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done Toilets
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Frequently asked questions
When and where can I collect my BIB/race pack?
Race numbers will not be posted out in advance of the race. Race numbers can be collected from Race HQ on the day of the race.
What is the cancellation/refund policy for this event?
At ATW, we understand that sometimes plans change. While we do not offer refunds or transfers to another person, we provide a hassle-free event transfer option for those unable to attend their booked event. If you are unable to participate in your scheduled event for any reason—including injury, illness, pregnancy, bereavement, or other unforeseen circumstances—you can transfer your entry to any future ATW event. There is no proof required, we trust you! Even better news, transfers can be made all the way up to 48 hours before your original event date.
Can I wear headphones?
All our road races are licenced by UK Athletics which means the wearing of headphones is strictly prohibited with the exception of bone conductors which leave the ear open to marshal instructions, traffic or emergency announcements.
Can I run with my dog?
All our road races are licenced and governed by UK Athletics rules and therefore dogs are not allowed to participate.
When will I receive further information about the event?
The detailed race information including maps, details on parking, registration, baggage and start times will be e-mailed out to participants approximately 10 days before the event date. This sometimes ends up in junk mail so please keep an eye out for it!
The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.
