I did the Down Tow Up Flow (or Up Tow Down Flow, whatever) and thoroughly enjoyed it. This one looks interesting, but I'm wondering how public transport friendly it is. This from the entry form:
"You can either park at the finish in Cassiobury Park and take the coach provided to the start (£5) or park at Cowley and make your own way back to your car afterwards."
Assuming I can get to the start venue in time by train from Reading, how will I get back after running the race?