Special early bird registration offer coming soon!

Gear up for an action-packed day of riding at our legendary cycling event!

Run in association with British Cycling, our choice of 25k, 60k or 100k sportive challenges take you over rolling Chiltern Hills and the stunning countryside of Herts, Beds and Bucks.

Ride highlights

Take on the UK Top 100 Whiteleaf climb: 1.3km at an average gradient of 10%, among a route packed with some of the toughest climbs in the South East.
Fantastic feed stations: Refuel with a wide choice of free snacks and refreshments to keep you going for the journey ahead.
Mobile bike repair service: Keeping you safe throughout the day.
Finishers’ medal: Wear it with pride knowing you’ve made a big difference for people facing homelessness, poverty and social exclusion.
Celebrate in style: Enjoy a delicious burger and beer at our cycle village in Gadebridge Park.


Route maps

Our choice of routes cover the Three Counties of Hertfordshire, Bedfordshire and Buckinghamshire. Click on each route below for elevation and climb details. GPX files will be provided to participants on event week.

Join our Hillbuster community

You’re invited to become a member of our Hemel Hillbuster group on Facebook. It’s a friendly cycling community where you can find all the latest information from DENS and our event partners, including training tips and fundraising advice, plus share training progress and join conversations with fellow riders.


It was amazing scenery, super safe route and everyone was so friendly. It was so well organised, the volunteers and staff were lovely and it’s an amazing charity to support


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