Old Faithful: Yellowstone's Most Famous Geyser
A Long History of Wonder
Old Faithful's written history begins on September 18, 1870, when members of the Washburn-Langford-Doane Expedition followed the Firehole River into the Upper Geyser Basin and watched a geyser erupt with remarkable regularity. Impressed that they could predict its next performance, the expedition named it "Old Faithful" — the first geyser in the park to receive a name. In the century and a half since, Old Faithful has erupted over a million times.
Getting There
Distance from Gardiner & North Entrance: 56 miles, 1.5–2 hours
Distance from West Yellowstone & West Entrance: 32 miles, ~1 hour
Old Faithful sits in the Upper Geyser Basin in the southwest part of Yellowstone park. From the West Entrance at West Yellowstone, it's the closest gateway. Once inside the park, Old Faithful is well signed off the Grand Loop Road, you can't miss it.
What You'll See
Old Faithful is just one of roughly 150 geothermal features packed into the Upper Geyser Basin — the densest concentration of geysers on Earth. A three-mile boardwalk network connects it to several other reliably predictable geysers nearby, including Castle, Grand, Daisy, and Riverside, so an early start can turn into an afternoon of watching multiple eruptions. The historic Old Faithful Inn, considered one of the largest log structures in the world, sits just steps away and is worth stepping inside even if you're not staying the night.
Visitor Tips
Eruptions come every 50 to 127 minutes or so, averaging around 90 minutes apart, and the visitor center posts a predicted window based on the length of the last eruption — check there first instead of guessing. Arrive early (before 8 a.m. in peak season) for lighter crowds and easier parking, or hike up to Observation Point for a quieter view above the basin. The Old Faithful corridor is the busiest stretch of road in the park, so build extra time into your drive, and pack a layer — the basin sits above 7,300 feet and mornings stay cool even in July.