[2] The event starts and finishes at Royal Air Force Wyton, and is scheduled for the closest Saturday to the Mid-Summers Day.
Due to the strenuous nature of this event, and the weather conditions a number of participants do not complete the course, although the percentage of finishers is increasing.
There have also been more and more runners taking part The route has been modified since the Pathfinder March was first introduced in 1997, and no longer crosses the airfield as it is active during the event.
Instead, the route now tracks from Warboys west to the village of Kings Ripton, before heading south and the RAF station.
The route is signposted with way marker signs displaying the silhouette of a mosquito aircraft and is open all year as the Pathfinder Long Distance Walk.