Important Info – Hertfordshire 100

Here you’ll find essential information regarding The Hertfordshire 100.

Please read carefully as due to COVID-19 things will run a bit differently than usual.

We recommend all participants wear a mask when not riding, this includes registration and feedstops, think of us like a supermarket!

Please do not ride in groups of more than 6. 

Event HQ

Event HQ

Chancellors School
Golf Course Road
Brookmans Park

The Event HQ will be manned from to 4.30pm

Parking at the event (click for larger image).



Timing chips and numbers have been send in the post, please DO NOT arrive more than half an hour before you allocated wave. There will be a carpark attendant checking names and numbers upon entry. 

A Video Briefing will be sent out before the event day. 

Once your allocated wave time arrives you can follow signs to the start line and begin. 

On the Day Registration

On the Day Registrations are by appointment only, please contact us to confirm there are places and to have your name added to the list. People wishing to register on the day must fill a registration form and pay for their entry in cash. A form can be downloaded Here.

Cycling Equipment Requirements

There will be a mechanic available on the day, however it is important you are self sufficient in changing your inner tube in the event of a puncture. We recommend you carry a minimum of 2 spare tubes and a puncture repair kit. 

Suitable Tyres

It might seem obvious, but you must make sure you have suitable tyres for puncture free riding. If you are running on old tyres, think about getting a set of new tyres for the ride – as sitting around waiting for a pick up won’t be much fun.

Participants are responsible for their own cycle, which must be fully roadworthy.

You must have at least:

  • A hand pump, spare inner tubes and a small multi-tool. We also recommend you have money, a mobile phone and spare clothes in case of any adverse weather conditions.
  • You must also have a water bottle/cage and be carrying some food.

Timing Chip Attachment

The timing chips are pre-attached to rider numbers. You will be given cable ties to attach the rider number to your handlebars.

Course Signs and GPX/TCX Route Files

The course is marked with black arrows on bright Pink paper that clearly mark the way as well as the route splits.

Please ensure you follow the Pink Paper arrows as there are other events in the area and we wouldn’t want you getting lost.

A link to the Garmin GPX/TCX files will be sent via email on Friday – this is so we are able to send out the correct routes after checking there are no issues around the courses. The link will also be available on the website.

We do our best to try and make sure your ride on the road runs as smoothly as possible by marking the roads clearly. If you find you have not seen a marker for a while, stop and consult your map, ask someone, or find a landmark and give us a call using the number provided on the back of your number.

The Routes, Feed Stations and Toilet Stops 

Please wear a mask when using the feed stations (think of it like a shop), we recommend gloves too. There will be some masks available for those who don’t have them.  

Hand sanitiser will be  available. Please ensure you keep at least 1 metre distance from others. 

All food is individually wrapped. 

Use the feedstops to help you get round the course and don’t get caught out with an empty bottle.

To avoid  crowding and feedstops will be monitored, to ensure that only event riders are using them. Please display your rider number clearly on your bike. We also included a DOT sticker which you can attach to the front of your helmet to us his more quickly identify you.

The Long Route has three stops. These are at 23 / 58 / 88  miles. There will be toilets to use at the 3rd stop which will be Burnham Green Village Hall (88). Make sure you fill your bottles at the first feed station before embarking on the 35 mile long loop.

The Medium Route has two stops at 23 / 52 miles (toilets at the 52 mile stop – Burnham Green Village Hall).

Please refrain from going to the toilet outside at the 1st stop on the Long/Medium routes as it is a residential area and may cause problems for us if they complain. If a toilet is required at the first stop, there is a church not too far that can help out.

The Short Route has one stop at 19 miles – there are toilets at this stop (Burnham Green Village Hall).

The Route Splits

The Long/Medium splits right while the short splits left at just over 15 miles on Bramfield Road. It will be fully signed and will be obvious which way you need to turn.

The Medium route splits from the Long route not long after the first feed stop at 25 miles at a place called Great Munden. The Long route then does a loop of 40 miles and then follows the medium route. Directions will be made clear on the day. The medium splits left while the long continues straight at this point.

It will be fully signed and will be obvious which way you need to turn. There will also be signs after the splits confirming which route you have chosen.

All Routes

At the last feed stop, there is only 12 miles to go (but a few hills) – so stop and get refreshed before making the final push (and maybe a cup of tea.)

All routes will have mile indicators after each split point to confirm that you are on the correct route.

Standards and Categories

We have put together some standard times to make your ride results a little more interesting.

Hertfordshire 100 Standard Times

The Standard Times for 100 miles are:

Age Group 18 to 39 = 6:00 Gold,  6:20 Silver,  6:50 Bronze.

Age Group 40 to 49 = 6:15 Gold,  6:30 Silver,  7:00 Bronze.

Age Group 50 to 59 = 6:25 Gold,  6:45 Silver,  7:15 Bronze.

Age Group 60+       = 7:00 Gold,  7:20 Silver,  7:50 Bronze.

The Standard Times for 64 miles are:

Age Group 18 to 39 = 3:30 Gold,  3:50 Silver,  4:15 Bronze

Age Group 40 to 49 = 3:40 Gold,  4:00 Silver,  4:25 Bronze

Age Group 50 to 59 = 3:50 Gold,  4:15 Silver,  4:40 Bronze

Age Group 60+       = 4:10 Gold,  4:35 Silver,  5:00 Bronze.

The Standard Times for 32 miles are:

Age Group 18 to 39 = 1:35 Gold, 1:55 Silver, 2:20 Bronze

Age Group 40 to 49 = 1:45 Gold, 2:05 Silver, 2:30 Bronze

Age Group 50 to 59 = 1:55 Gold, 2:20 Silver, 2:45 Bronze

Age Group 60+       = 2:15 Gold, 2:40 Silver, 3:05 Bronze.

Emergencies and Problems

If you have a problem on route emergency numbers are on the reverse of your ride number – should you require the emergency services please stay on the course to enable them to assist you quicker.

If you need mechanical assistance we recommend you text your problem and location to the mechanic who’s number is on the reverse of the rider number. Texting your location makes it much easier for the mechanic to quickly respond to you.

You are required to wear a helmet, please ride carefully and respect the locals, horses and motorists.

British Cycling Standards

You are required to wear a helmet, please ride carefully and respect the locals and motorists.

We suggest riders carry food, drink, money, a mobile phone, spare inner tubes, a working pump, a basic tool kit and spare clothing sufficient to complete the ride being undertaken, taking into account the route and possible adverse weather conditions.

Participants will be responsible for their own cycle which must be fully roadworthy.

It is the responsibility of any entrants to carry a map of the route. We will provide maps/cue sheets before the event. GPX/TCX files will also be sent out to you via an email link

All of our Events are run to the British Cycing Non competitive guidelines 

Included in the entry fee is Third Party Insurance provided by Insignia Underwriters.

The wearing of hard shell helmets conforming to CE standards EN1078 is mandatory for all riders at all times whilst on the course.

ALL RIDERS MUST CARRY a form of identification showing their name, address and the contact details of a person to be advised in the event of an accident.

And finally

We hope you all have a safe and enjoyable ride, and look forward to seeing you all on the day!