15 or so

Plus 1100' of elevation.  Met up with Mike, Erik, and Jeremy on the Manashtash Ridge top to ride Durr road down to Umptanum creek, back out and up Umptanum road.  Managed to have the only mechanical for the second week in a row.  Blew out the rear tube with a bang.  The rear wheel locked up right before, as i think i sucked a rock up and jammed it.  Fast ride down on the CX rig, fun climb out and another quick climb/descent.  Need to take a good day off, and let the legs rest.  My second participation in this cycling study is Monday.  Time for another 40k TT.