The Hillingdon 20, (formerly the Finchley 20), is the longest-running 20-mile race in the UK. Excellent preparation for the London marathon.
Date: 22nd March 2026
Start Time: 09:00 AM
Event information:
A hilly 20 mile road race, an ideal build-up to the London or other spring marathons
Early bird entry price of £28.00. Standard entry is £30.00
Open to entrants aged 18 and over on 22/03/2026
Well marshalled route With over 70 marshals, you won’t be short of support!
Chip Timing gives you a personal time
Professional medical support
Experienced organising team, we are all runners too
Changing rooms, showers and refreshments at Hillingdon Athletic Club clubhouse
There will be 2 water stations per lap
This event will feature the Hertfordshire 20 mile Championships.
To be eligible, you must have been born in Hertfordshire or been a resident for 9 months. To take part in the Championships, you must state your eligibility during registration process.
Cash Prizes for:
Male 1st, 2nd and 3rd: 1st £150.00, 2nd £100.00, 3rd £50.00
Female 1st, 2nd and 3rd: 1st £150.00, 2nd £100.00, 3rd £50.00
1st Male Over 40 £50
1st Female Over 40 £50
V50 Male £50
V50 female £50
V60 Male £50
V60 female £50
The race HQ is Hillingdon Athletic Club, 206 Bury Street, Ruislip HA4 7TJ. There will be a secure baggage area plus refreshments, toilets and showers available.
There are a large number of free parking spaces at the crematorium. Limited pay and display parking is available nearby at Ruislip Lido. The nearest station is Ruislip Station. More details can be found below:
FAQs
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!
Will I get a medal?
All finishers will receive a custom made, themed medal at the end of the race.
My friends/ family are interested in volunteering – how do they sign up?
Get them to contact us via to see what roles are available!
Are headphones allowed?
In ear and over ear headphones are strictly not permitted at any ATW event.
Bone conducting headphones are permitted, unless stated on the event page.
Results?
Will be available following the event here
