Jeff Smith 2 p.m., Oct. 23
Discover San Diego Map Adventure
Teams "visit hidden treasures, historical landmarks, and a few quirky oddities," with checkpoints scattered from Gaslamp Quarter to Old Town and from Coronado to Balboa Park. Go on foot or on bike. Use custom maps to plan 2-, 4-, or 6-hour routes. firstname.lastname@example.org or 510-681-6181.
- Cost: $10 - $60