Sunday 21st July 2024


New routes for 2024. The first section for all routes will be changing. 


RUN or WALK our classic Trail routes.

10K, 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. Age limits apply. Over 16 for the 10k, Over 17 for the Half. Over 18 for 18mile and Marathon and over 20 for the 50k.


Please see Event Day page for details of start times.


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 2024 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 2024 you will be automatically transferred to next years event.


Join our  Facebook group








All Entries are £25 (£23 for affiliated runners)


All finishers will receive a medal.


We will have a limited number available on the day, but there is no guarantee of a medal for on the day entries.







Event Ethos


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




Dogs are welcome! Make ensure that they are fully insured and 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






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.


NEW 2024 routes


Updated 07-07-24

2024 GPX Files



Route Descriptions


Our comprehensive route descriptions are availble to download.


2024 routes have changed.


Files Updated on 7th July 2024

Significant route changes since 2023


10k Description

Half Marathon Description

18 mile description

Marathon Description

50k Description