Notes
Parked at the strip mall next to N W Expressway and the connecting road between Overholser and Hefner. Ran to Overholser, looped it, ran back to car, switched bottles, ran to Hefner and looped it. Added the keyhole and ran a little past Britton on the way back thinking I needed a little extra to make my 50K. Most of the run was overcast, rained a bit while I was at Overholser. When I got to Hefner, the sun was coming out and it was a bit warm and humid.