Pulled L hamstring about 5.5 hours in. I wanted to get a trifecta of tricky high point controls in the north end of the map done before darkness set in so was pushing the pace up the horse trail in Long Branch Hollow and had a sudden sharp shooting pain in the upper L hamstring. Climbing steep hills out of the question and every control pretty much included steep hills of one sort or another.
Decided not to risk a more significant injury & a long, cold solo night in the woods and limped it back in about dusk. Felt good up until then. Well set course - at least the controls (half) that I visited - one water control on road was not quite in circle but easy enough to locate.
rough route - gps died...