Oh yeah, I try to avoid spurs as much as possible for that reason. The Oxford ride is only 14 U-turns, the rest is done with junctions! I find the worst thing I can do when tiling is hit off-road stuff, which is a real drag...Having got my cluster from Lufbra to London, I'd recommend a series of shorter rides without too many out and back detours. I say this mainly because it can start to get a bit tiring and slow if you're forever turning round. It may have taken me a few more rides to do it this way but was pleasant (apart from the gap in the middle of the country).