The July 2019 Napa to Sonoma Wine Country Half Marathon takes place in Napa, CA! The race net elevation gain/loss is -77′ starting at 159′ finishing at 82′ with maximum elevation at 220′. The time limit for this race is 3 hours and 30 minutes, which is considered not walker friendly by Halfmarathonsearch.com. A great half marathon for wine enthusiasts, but unfortunately not a good half for back of the pack half marathoners.