SAN ANTONIO – National Margarita Day is a day for slow-sipping. To honor the chill holiday, La Familia Cortez, the family behind Mi Tierra, La Margarita and Pico de Gallo, is hosting a Margarita Y Musica 0.5K at Market Square on Saturday. The family is calling it a “fun-(not)-run,” and that’s because a short stroll will lead to five mini-margaritas from each La Familia Cortez restaurant. Where to grab a margarita in San Antonio on National Margarita DayTicket prices are $25 for one runner or $40 for two, and they can be purchased online. Packets, including a race map, can be picked up starting at 4 p.m. at La Margarita, 120 Produce Row.