Trained guides lead groups through class III & IV rapids, pausing to cliff dive & cook at campsites along Klamath River.

Stations placed throughout looping 5K track gleefully lob clouds of colored cornstarch to transform runners' outfits from white to rainbow

Water-balloon fight strives to break world record with 500,000 balloons hurled among 15,000–30,000 players

Pupils earn licenses to dive in five classroom and five pool sessions and four ocean dives; includes two postcertification ocean dives

Runners dash across course peppered with zany obstacles including mud pits & spools to hurdle, then party down with cold beer & live bands

PADI course certifies open-water divers after 3 weeks of on-site pool instruction & 4 ocean dives in Monterey Bay National Marine Sanctuary

Instructors lead one-hour session teaching ground techniques & operations, followed by training on Flight Deck

Thirty-minute, hands-on riding lessons on 80-acre ranch where experienced instructors teach basic English riding

Standup-paddleboard instructors lead students through basic maneuvers with provided equipment in calm waters of Santa Cruz Harbor

Instructor Jeanette Arnaout channels more than 20 years of equine experience to carefully guide students of all skill levels