What is the minimum age to participate in the Santa Barbara Wine Country Half Marathon? Randy December 30, 2018 19:26 Participants must be 13 years old on race day to participate in the Santa Barbara Wine Country Half Marathon. Related articles Are Children/Those without passes allowed inside the Wine Festival? What is the schedule for the Santa Barbara Wine Country Half Marathon? Where can I find a course map? Can someone else pick up my race packet? Where is the best place for Spectators to watch and support?