The Hillingdon 20, (formerly the Finchley 20), is the longest-running 20-mile race in the UK. It's excellent preparation for the London marathon.

A hilly 20 mile road race, an ideal build-up to the London or other spring marathons

Well-marshalled route – over 70 cheering you on your way

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 AC clubhouse

Cash prizes are available for 1st, 2nd & 3rd places in both male and female categories.

See below for more details.

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