Take a running tour through San Antonio with live entertainment along the course. Then celebrate your finish with a festival, beer garden and headliner concert! The end of fall 2019 brings the 12th annual running of San Antonio’s Rock ‘n’ Roll Marathon & Half Marathon, which — like its counterparts in San Diego and Virginia Beach— features live bands to cheer the runners, walkers and wheelchair competitors on every two miles along the entire 26.2-mile course, of which the first 13.1 miles is the course the half-marathoners run.