This is a variable course which can take you from 5 to 20 miles depending on the route. Start at Sam Clemens High School in Schertz on Elbel Rd and head through Cibolo through the farmland to I-35 frontage road. (to add miles turn right on frontage road past the flea market and go as far as you like). Left on the frontage road then negotiate a bit of traffic crossing FM 3009/Roy Richard. Turn left and deal with a few challenging hills on Schertz Parkway and return to the high school on Elbel.