I don't know how you do so well on a singlespeed. I was losing places every lap on the field section after the barriers to the foot of the climb as I span out and then couldn't close the gap on the hill (where I was slightly over geared).
Well done on 4th though, good start to the season.
Results are up from Stanmer Park in the London League.
Good course: the hill's a good test of fitness but without the technical skills you could lose lots of time in the woods.