Space Mountain has been hurtling guests through the dark skies of Tomorrowland for nearly half a century, but pinning down exactly when it debuted takes more than a guess — Disney built multiple versions of this ride across different parks in different years.
Here’s the exact date Disneyland’s Space Mountain opened, the astronauts who showed up to celebrate it, and how the ride has changed since that 1977 debut.
Quick Answer
Space Mountain opened at Disneyland in Anaheim, California on May 27, 1977, following a soft-opening period that began on May 4, 1977. It was Disneyland’s second roller coaster (after the Matterhorn Bobsleds) and the second version of Disney’s space-coaster concept, arriving two years after the original Space Mountain debuted at Walt Disney World’s Magic Kingdom in 1975.
The Grand Opening: May 27, 1977
Disney treated Space Mountain’s debut as a major event. The dedication ceremony on May 27, 1977 was attended by six of the surviving Mercury Seven astronauts — Scott Carpenter, Gordon Cooper, John Glenn, Walter Schirra, Alan Shepard, and Deke Slayton — along with Betty Grissom, widow of astronaut Gus Grissom, who had died in the Apollo 1 fire a decade earlier.
The ride opened as the centerpiece of a $20 million Tomorrowland expansion that also included the Space Place restaurant, the Space Stage, and the Starcade arcade. Before the official ceremony, Disneyland ran previews for guests starting May 4, 1977, a common practice for working out operational kinks before a high-profile launch.
Why Disneyland’s Version Came Second
Walt Disney first sketched out the idea for an indoor space-themed coaster back in 1959, inspired by the success of the Matterhorn Bobsleds, but the technology to build it affordably didn’t exist yet. Disney died in 1966 without seeing the concept realized.
Walt Disney Imagineering’s Bill Watkins eventually designed a tubular steel track system (patented in 1977) that made the ride possible, and Disney built the first version at Walt Disney World’s Magic Kingdom in 1975. Disneyland’s Anaheim version followed two years later, using a smaller, single-track layout adapted to fit inside Tomorrowland’s distinctive white cone-shaped building.
How the Ride Has Changed Since 1977
The most significant change came decades after opening: by the early 2000s, the added weight of an onboard audio system had worn down the original support structure, forcing Disney to close the ride and replace its entire track system. The rebuilt coaster reopened with soft-opening previews starting July 1, 2005.
Since then, Disney has periodically overlaid the same track layout with different theming. A Halloween-season “Ghost Galaxy” version ran annually from 2009 through 2018, projecting a supernatural entity into the darkness. A Star Wars-themed “Hyperspace Mountain” overlay first debuted in November 2015 and has returned seasonally during Disney’s “Season of the Force” celebrations, swapping in Star Wars music, ship battles, and visual effects over the classic ride system.
The Ride Experience
Riders board 12-passenger trains that climb a 76-foot lift hill before plunging into near-total darkness, where strobe lights, star fields, and a synchronized audio track create the illusion of hurtling through deep space. The actual top speed is a modest 32 mph, but the darkness and sudden turns make it feel considerably faster.
The full ride lasts about 2 minutes and 45 seconds. Disneyland runs up to 11 trains at once on the circuit, and the attraction has zero inversions — its thrill comes entirely from darkness, drops, and tight turns rather than loops.
Visiting Space Mountain Today
The minimum height requirement is 40 inches (102 cm), notably shorter than the 44-inch requirement at Walt Disney World’s version. A single-rider entrance, added in December 2017, lets solo guests fill empty seats and often cuts wait times significantly.
Space Mountain also participates in Disneyland’s paid Lightning Lane skip-the-line system on busier days. Because operating hours, Lightning Lane pricing, and seasonal overlay schedules change throughout the year, check the official Disneyland Space Mountain page for current hours and access options before you visit.
Photos
Folds into its own pocket. Pop it on when the storm rolls in and the rides reopen to short lines.
Keeps your phone strapped to you, not in a loose-article bin. Zip it before the lift hill and walk straight off the exit ramp.
Rapids, log flumes and splash zones without the rice-bag aftermath. The touchscreen still works through the window, so you can still take photos.
Space Mountain Disneyland opening date FAQs
When did Space Mountain open at Disneyland?
Space Mountain officially opened at Disneyland on May 27, 1977, after soft-opening previews that began May 4, 1977. It was the park’s second roller coaster, following the Matterhorn Bobsleds.
Is Disneyland’s Space Mountain the first one Disney built?
No. Walt Disney World’s Magic Kingdom opened the first Space Mountain in 1975, two years before Disneyland’s version debuted in 1977.
Who attended the opening ceremony?
Six of the Mercury Seven astronauts — Scott Carpenter, Gordon Cooper, John Glenn, Walter Schirra, Alan Shepard, and Deke Slayton — attended, along with Betty Grissom, widow of astronaut Gus Grissom.
How fast does Space Mountain go?
The ride reaches a top speed of about 32 mph (51 km/h), though the total darkness makes it feel much faster.
Does Space Mountain have any loops or inversions?
No, Space Mountain has zero inversions — its thrill comes from darkness, drops, and turns rather than loops.
What is the height requirement for Space Mountain at Disneyland?
Riders must be at least 40 inches (102 cm) tall, which is shorter than the 44-inch requirement at the Walt Disney World version.
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