Sunday 18th July 2021


RUN or WALK our classic Trail routes.

Half Marathon, 18miles, Marathon or 50k Ultra.


The Challenge is an off road and self navigated challenge through the picturesque Hertfordshire countryside around Stevenage.


The event will be held under ARC rules.


There will be no mass starts this year, participants will be free to start shortly after 08:00 and before 10:00 and must check out at the start line before leaving.


Please ensure you comply with any Covid regulations we stipulate. These will be communicated via email and posted here closer to the event.


Number pickup is at registration on the day.


Final Instructrions will be available for download here and will be emailled out closer to the date.


Cancellation Policy

In the event we have to cancel before 1st June 2021 entries may be refunded less a small administration fee, or transferred free of charge to next year. If the event has to be cancelled after 1st June 2021 you will be automatically transferred to next years event.


Join our  Facebook group








All Entries are £20 (£18 for affiliated runners)


All finishers will receive a medal based on the Challenge banner.





Event Ethos


Our event is an individual challenge in a friendly non competitive environment.




Dogs are welcome! Make ensure that they are under control at all times.

Contact Us


You can email us at

Social Media


For regular updates visit the

Challenge Facebook Page.


We are also on Twitter



And Instagram






 For old school challengers the maps are available to download and print.

Please print your own copy and bring with you. We will not have copies.


Half Marathon Map

18 Mile Map

Marathon Map

50k Map




We provide GPX files of the routes for those of you who like your gadgets. The Challenge means different things to different people, for some it's the navigating, for some it's the distance, and for some it's just the pleasure of a day out with friends. Please note, these files have been created using mapping tools and not fully tested in the field.


Files updated in 2018 and provided as is.

Clockwise GPX Files


Route Descriptions


Our comprehensive route descriptions are availble to download.



Files Updated on 14th July 2019


Half Marathon Description

18 Mile Description

Marathon Description

50K Description






2019 Results


2018 Results