Upper Geyser Basin Boardwalks

Overview

If you want Yellowstone’s hydrothermal hits with minimal effort, this is the walk. A mostly flat network of paved paths and wide boardwalks winds through the world’s highest concentration of geysers and hot springs—Old Faithful, Castle, Grand, Daisy, Riverside, Grotto, and the technicolor Morning Glory Pool are all on the menu. Plan on roughly 3.0 miles total for the classic circuit from the Old Faithful Visitor and Education Center, with 1–2+ hours depending on how many eruptions you pause to watch. Expect crowds and limited shade—arrive early or later in the day and bring sun protection and water.

Route Options

Start behind the Old Faithful Visitor and Education Center and loop west past Castle and Daisy toward Riverside, then north to Morning Glory Pool before looping back by Grotto and Grand to the Old Faithful/Geyser Hill side. That classic loop is essentially flat. A popular add‑on is Observation Point (about 1.5 miles round trip, ~250 feet gain) for a quieter, elevated look at Old Faithful—head up ~30 minutes before a predicted eruption. If you want more, continue beyond Morning Glory through the forest to Biscuit Basin and return the same way for ~5 miles total. Restrooms are around the Old Faithful developed area, and there’s a handy composting toilet near Morning Glory.

What You’ll See

This basin is a living science lesson. Geysers erupt because constrictions in underground “plumbing” trap and superheat water until it flashes to steam; hot springs lack those constrictions and circulate constantly. Thermophiles—heat‑loving microbes—paint pools in yellows, oranges, greens, and browns depending on temperature. Morning Glory Pool is gorgeous but sobering; years of tossed objects altered its plumbing and color, shifting its famed blue toward green. Keep an eye on the prediction boards for Old Faithful and other “predictable” geysers (Castle, Grand, Daisy, Riverside) so you can time your stroll to the shows.

Accessibility

This is one of Yellowstone’s most accessible marquee walks. Surfaces are paved asphalt and wooden boardwalks, typically at least 6 feet wide with railings or edge barriers, and mostly gentle grades (about 5% or less). There’s designated accessible parking in the main paved lot. Note that Observation Point involves a steeper climb and may not be wheelchair‑friendly.

Best Time to Hike

August–September offers the most reliable weather with peak services. June–July can be buggy; pack repellent. In winter, the area is reachable by snowcoach and is popular for skiing/snowshoeing, but plan for cold, wind, and limited services. Standard road access runs roughly mid‑April to mid‑November with shoulder‑season closures—check current conditions. For crowds and photography, aim for early morning or late afternoon; consider wind direction so steam doesn’t obscure eruptions.

Tips and Caveats

• Predictions matter: Check eruption times at the Visitor Education Center boards, area lodges, or the NPS app and plan your loop accordingly.
• Closures happen: Thermal changes sometimes close spurs (e.g., parts of Geyser Hill or Solitary Geyser). Obey signs.
• Safety first: Stay on boardwalks and designated trails—thin crust and near‑boiling water can cause severe burns. Toxic gases can pool in low spots; leave immediately if you feel ill.
• Pets are not allowed in thermal areas. Supervise children closely. Wildlife rules still apply—keep distance and carry bear spray even on short walks.

Is It Worth It?

Absolutely—this is Yellowstone’s hydrothermal highlight reel on an easy, stroller‑friendly path. Yes, it’s crowded, but the payoff is unmatched. If you want a quieter complement with big color, pair it with Biscuit Basin later in the day when tours thin out.