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The Hemel Hillbuster II
09:00: Sunday, 23rd April 2017

Thanks to our generous sponsors Aitchisons for their kind assistance in putting on the event.

Online entry closed at Midday on Thursday 20th April. We have 81 on the day entries available on a first come first served basis until we reach our maximum number of 500 riders. On the day registration opens at 8:30am. We look forward to seeing you there! 

Following the success of our first Hemel Hillbuster, it's back for 2017!

We have listened to your feedback. Last year, you loved:

♥  easy entry through British Cycling and our pre-event information pack
♥  speedy registration
♥  well signed routes up challenging hills and through stunning countryside
♥  friendly volunteers
♥  quality of our feed stations

In addition, this year you can look forward to the following improvements:

 amended final sections on the 100km and 60km with a quieter finish
√  better located 2nd feed station
√  more hot food at the end of the event
√  a quality medal for every finisher
 exciting goody bags

Entries are open now on the British Cycling Website.

"It was really nice, lovely countryside, made me proud to come from this area, beautiful route, really well signposted, great volunteers along the way. I think it was really well organised. I'd recommend it for cyclists because of the beautiful scenery, the countryside and great routes"

View our round-up of last year's event.


Brand new for 2017 - a stunning medal for every finisher!

We are delighted with our new medals designed and created for us by D-Lab.

Many thanks to Aitchisons for generously sponsoring the medals.

Enter now to secure your place and make sure you're there at the finish to claim your medal.

Location and routes

The Hemel Hillbuster will start and finish in Gadebridge Park, Hemel Hempsted HP1 3AQ. There is public car parking at Gadebridge Park for up to 300 cars, please do not park on the grass. There is also on street parking nearby.

25km route – a very pretty countryside route, through gorgeous woodlands of the Ashridge estate and pretty villages of Little Gaddesden, Hudnall Common and Gaddesden Row.

60km route – a wonderful route for cyclists, including typically challenging Chilterns hills, out to Whipsnade, through pretty villages of Ivinghoe, Aldbury, Cholesbury as far as Chesham and then returning via Botley and Bovingdon. If you are short of time or warming up for summer cycling then this is the route for you!

100km – for practised riders, the ultimate Chilterns challenge, conceived by experienced local rider and club cyclist to delight and please you! Heading out towards Dunstable Downs, via Aldbury and Cholesbury, then out to Wendover, Cadsden, Great Missenden, Chartridge, Chesham and returning via Botley and Bovingdon.

Please note that any cyclist under the age of 18 must have parental consent to take part and any cyclist under 16 must be accompanied by an adult at all times. We recommend that you have passed your cycling proficiency test and have a year’s cycling experience on the roads.

Be well prepared! A good level of fitness is required to take part. Please seek advice from your GP if necessary.

Please ensure that your bike is in good working order before attempting the Hemel Hillbuster II and bring spare tubes, tyre levers and pump with you! Basic bike repair kit and pump will also be available at our feed stations.

Routes correct at the current time but are subject to change before the event due to any road closures'. Final routes will be issued on Mon 17 April at the same time as the final Rider Pack.

The route will be fully signed and marshalled and there will be a support vehicle, food stations and first aid. The event HQ will have hot and cold refreshments for friends and family as well as riders; there will; be a BBQ at the end of the event. Hearts First Aid will be on site and mobile technical support will be available from Halfords. Labour will be supplied free of charge, all parts will need to be paid for by riders making use of the service. Halfords will also be running a mini-shop at the event HQ for riders to buy any kit.


All participants MUST wear a safety helmet and we would recommend safety clothing.

Date and Time

The event will take place on Sunday 23 April 2017.

All riders will be given a safety briefing and set off in groups of up to 20 riders, no matter which route they are following.
Registration opens from 8:30am for the 100km route, the first group will set off from 9am.

For the 100k route, you will need to set off by latest 9:30am, and finish the course and be back at the registration area by 3:30pm.

For the 60km route, please register from 9:15am. You will need to set off by latest 10am although you can set off earlier. You must finish the course and be back at the registration area by 3:30pm.

For the 25km route, please register from 9:30am and you will need to set off by latest 10:15am and the final cut off time to be back at the registration area is 3.30pm (in case you decide to stop for a picnic or pub lunch!)


Route Online entry via British Cycling On the day
100km £25 £30
60km £20 £25
25km £15 £20

Your entry fee covers the costs of putting on the event, water along the route and feed stations for the 60km and 100km, First aid cover at HQ and mobile support on the course, mechanical support on the day and full route signage and marshalling. 


We do not stipulate sponsorship from entrants although we are constantly trying to raise funds for our much needed services so would be delighted to receive any additional donations at www.justgiving.com/dens or on the day. You may also wish to set up your own JustGivingVirgin Money or BT MyDonate page to invite friends and family to sponsor you; please get in touch on fundraising@dens.org.uk or 01442 800268 if you would like any support with your fundraising. 

The Registration Process

After you have registered online with British Cycling, you will receive a confirmation email to the email address which you provided. If you have any problems, please email fundraising@dens.org.uk or call 01442 800268 for assistance.  On Monday 17th April 2017 you will receive a rider's information pack by email to confirm timings, routes and parking details.

Online registration will close at 12 noon on Thursday 20 April and after this time you will need to enter on the day.

Payment on the day can be made by cash, cheque or card. We are reliant on mobile signal for card payments on the day so it may be quicker to pay by cash or cheque!

At registration, on the morning of the event, you will receive a rider number with an emergency number on the reverse to attach to your bike with cable ties. You will need to confirm your emergency contact details to us. Any riders under 18 will need to provide parental consent to take part.

Our insurance cover is with British Cycling as follows:

For the protection of members and all those involved in the management of registered and insured cycling events, British Cycling provides through its public liability insurance policy, an indemnity, limited to £10,000,000 for legal liabilities arising from claims made against an event organiser, official or participant that involves either bodily injury or property damage to a third party.

Read more here.

We recommend that riders take out a British Cycling Ride membership to benefit from individual insurance cover on this ride and any others they participate in within the year of cover.

Event Support

We couldn’t run the event without the help of volunteers and our kind sponsors. If you would be interested in becoming a sponsor, helping us to promote the ride, volunteering on the day or helping DENS in any other way, please get in touch, we would love to hear from you!

Keep up to date by liking our Hemel Hillbuster Facebook page



Aitchisons are providing the archway at the finishing line again this year, as well as sponsoring promotional banners and the medals which will be given to each participant. 



Halfords will have a mini shop at the event HQ and the Halfords bike team will support riders out on the course with mobile technical support. All labour will be provided free of charge.

If you are a member of British Cycling, you qualify for 10% in-store with Halfords. Ask in-store for more details, and have your British Cycling membership number to hand.



Thanks to our fantastic sponsors KPMG for providing our lovely kite flags - look out for them at our event HQ in Gadebridge Park and at our two food stations at Wiggington and Ballinger.


Breeze is British Cycling's biggest ever programme geared towards getting more women into riding for fun.

With an emphasis on fun, social and local rides, Breeze aims to make women feel more confident and comfortable about getting on a bike, and rides will usually start and end at a cafe - providing a great opportunity to get to know fellow cyclists over a cuppa and a slice of cake.

Click here to find a Breeze ride in near you.

It's fantastic for Hemel Hillbuster II to be featured in Breeze Network's top sportives for women in 2017!

Ride Social

Ride Social is Britain's biggest social cycling community, helping you find likeminded cyclists to ride together and discover more.

Ride Social enables you to join and organise rides in your local area. Share your ride for local cyclists to join and before you know it you'll have your own cycling group.

With 80,000 riders across the UK already signed up, what are you waiting for?

Sign up to Ride Social here.

Ocado & Science in Sport

Thanks to our wonderful sponsors at Ocado and Science in Sport for the fantastic donation of gels for our event.


The Flying Physios

We are looking forward to welcoming The Flying Physios so if you need a really effective treatment at the end of our challenging course then you will be in the best possible hands.



The laser cutting service at D-Lab has kindly provided the medals which will be handed to each participant at the finish line.

Lumina Technologies

Our barbeque at the finish line this year is kindly sponsored by Lumina Technologies.


The Boxmoor Trust

The Boxmoor Trust have kindly allowed the route to go through Boxmoor this year.


Event Details
Sunday, 23rd April 2017
51.762356, -0.477531
100K Route - PDF
60K Route - PDF
25K Route - PDF
Riders Pack
Risk Assessments
Sign up today
100K Route - Strava
60K Route - Strava
25K Map - Strava