The San Antonio Road Runners Club coaxes runners ten miles out of town to Bulverde for a crack at the rarely-run 25K distance (a bit over 15 miles). There is also the option to run the distance as a 2-person relay team.
Event location is the Bulverde Community Center (BCC), 1747 E. Amman Dr., Bulverde, Texas. The course is a combination of loop and out-and-back segments. Be ready for rolling hills the first 2-3 miles on the course. The first half of the course has a net downslope, which you'll barely notice. After the turnaround at halfway, you will certainly notice the gradual incline.