Tesoro Viejo Spring Classic Half Marathon

Tesoro Viejo Spring Classic Half Marathon is run in Madera, California, on March 7, 2027. Three distances start together at 9:00 a.m.: the half marathon (13.1 miles), a 10K run and a 5K run/walk, so entrants of very different levels share the same morning and the same finish area.

This is a road race in California's Central Valley, and the mid-morning start makes it easy to travel in on race day rather than the night before. The 5K welcomes walkers, the 10K suits anyone in the middle of a spring build, and the half is short enough to slot into marathon training as a hard tune-up. If 13.1 miles is your target, plan on ten to sixteen weeks with a weekly long run and one steady-effort session, and practice your fueling before the day.