The Balboa Park Railroad takes a four-minute, half-mile loop through four acres of Balboa Park. The train station is located outside the Zoo's exit.
The miniature train is operated by the San Diego Zoo, and operates weekends and most school holidays, from 11 a.m. to 4:30 p.m.
Tickets are $3 for ages 1 to 99. Ages 5 and younger must ride with a paying adult.