We start and finish at Colwall station, but parking is quite limited there, so you may have to find somewhere on the nearby streets. Don't be tempted to park in the industrial estate beyond the small station carpark, at least not in the evenings, or you'll get locked in. Colwall is a delightful linear village running along the lower western slopes of the Malverns, so you can expect quite a bit of hill work for at least half of this course!
Note that the alighnment of the path on the map at control 22 is slightly out, so you need to go East when you hit the stream to get a beep.
Please note that this course requires MapRun v7 - just called MapRun - to be installed on your phone. If you have an earlier version - MapRunF or MapRun6 - uninstall it and install MapRun, which is the current version(7).