Outside event (not hosted by Trinity Endurance), about two and a half hours south of the shop. A North Texas winter classic running since 2010: a self-supported 75-mile race on public gravel roads, plus a 50-mile timed route and a 35-mile untimed challenge. $50 to $75, no SAG support. Check the race page for start times and registration: https://runsignup.com/Race/TX/Gainesville/TexasChainringMassacre2027