Seaworld San Diego vs Six Flags Magic Mountain

SeaWorld San Diego sits on the shore of Mission Bay in San Diego, California. It's the original SeaWorld park, opened in 1964, and blends marine-animal exhibits with modern coasters: Emperor (a floorless dive coaster), Electric Eel (a triple-launch coaster), Manta (a launched family coaster), and the newer Arctic Rescue straddle coaster.

Southern California weather keeps SeaWorld San Diego open year-round, with peak crowds during US school holidays, Halloween Spooktacular and Christmas. Weekdays in January, September and October are dramatically calmer. Check live queue times for Emperor and Electric Eel on arrival, and use our crowd calendar to pick a midweek day for shorter waits. The park pairs well with a full-day visit to nearby San Diego attractions.

Six Flags Magic Mountain in Valencia, California, holds the world record for most roller coasters at a single park - currently 20 distinct coasters. Highlights include X2 (a 4-D prototype), Twisted Colossus, Tatsu (a flying coaster), Full Throttle, Superman: Escape from Krypton, Goliath, and Wonder Woman Flight of Courage. The park's hilly footprint gives many rides dramatic terrain-following drops.

Magic Mountain's LA-area weekend visits, US school holidays, Fright Fest and Holiday in the Park events drive peak crowds. Weekdays outside school breaks can be dramatically quieter. Check live queue times for X2 and Twisted Colossus on arrival - they build up fastest - and use our crowd calendar to pick a lower-crowd midweek date if you want to ride all 20 coasters in a single day.