Too soon.
Just jogged/walked round which felt fine at the start but became uncomfortable 4-5. Therefore walked up all the hills. Actively painful on the walk back for the car park.
This made for very good accuracy!slight miss on 2 where I followed the path a bit too far, but otherwise basically perfect. Wish I could orienteer like that at speed!
Hopefully am still in a better place than after the fell race last week, so will try doing nothing for a bit in prep for Wales. Fitness will have to take a backseat to actually being able to compete...
EDIT:
http://www.ngocweb.com/results/results_16/L5res.pd...10th/37 - quite pleased with this considering that I was mainly just trying to get round at whatever speed produced the least pain...