About Six Flags St. Louis
Six Flags St. Louis is a major roller coaster destination located in 1904 World's Fair, Missouri, currently operating 6 tracked coasters on its midway. The park's lineup spans multiple ride styles, manufacturers and eras, giving visitors a varied day rather than a single signature thrill. CoasterVault aggregates structured data on every coaster at the park so you can plan a visit around top speeds, height requirements and seasonal opening windows rather than guessing from social posts.
Within the operating lineup at Six Flags St. Louis, the fastest coaster is The Boss at 66.3 mph, the tallest is The Boss at 122 ft, the longest-tenured ride is River King Mine Train, operating since 1971, and the most recent addition is Boomerang from 2013. Together these benchmarks give a quick sense of the park's thrill profile — whether the lineup leans toward heritage wooden rides, modern launched steel or family-friendly coasters that work for first-time riders.
When planning a trip, it pays to check the park's seasonal calendar before booking travel — many regional parks operate on weekends only outside summer and may close individual coasters for refurbishment without much notice. Arrive at rope drop, head to the headliner first, and use any available single-rider or early-entry program to compress the longest waits into the first hour of the day. Lockers near each major coaster are typically the best place to stow loose items, and most operating crews will refuse to dispatch trains with unsecured phones in pockets.
CoasterVault's coaster pages for Six Flags St. Louis include the manufacturer, model platform, opening year and detailed performance figures wherever public data is available. Use the list below as a working tour plan: each coaster page links to comparable rides at other parks so you can decide which experiences to seek out first and which to save for return visits.