Interesting route. The start is epic. You look up this amazing set of steep and multiple paths and you need to head up then hang to the left.
After that the course is perhaps much more rolling than you expect from the start. There are a couple of superb forest tracks with steep climbs but generally the course weaves through sections of easy Cotswold Way open expanse. Plenty of stiles and break points so not easy to go fast. Trails were muddy in parts due to the excessive rain but actually the "on high" parts are surprisingly dry and very runnable
There's nothing up here - so bring what you need. Strongly recommend incorporating this loop as part of a much wider route and discovering more of the fun steep climbs where possible.