Are dogs allowed on Lone Star Geyser Trail?

No, dogs are not permitted on Lone Star Geyser Trail. This is typical in many national parks and wildlife refuges — check for a nearby dog-friendly alternative.

Do I need a permit to hike Lone Star Geyser Trail?

No, Lone Star Geyser Trail does not currently require a permit. Still check for seasonal closures or day-use fees with the managing agency before heading out.

How difficult is Lone Star Geyser Trail?

Lone Star Geyser Trail is rated easy. It is 4.8 miles long with 472 feet of elevation gain. Difficulty ratings reflect a combination of distance, elevation gain, and terrain — your experience will depend on your fitness level and trail conditions.

What is the best season to hike Lone Star Geyser Trail?

Lone Star Geyser Trail is best hiked in spring, summer, and fall. Conditions vary year to year — check the trail status and weather forecast before your visit.

Status unknown — verify before visiting

We don't have current condition data for this trail. Check with the land manager before you go.

See Wyoming trail conditions

Status updated 05/24/2026

EasyOut and Back

Yellowstone National Park/Wyoming

Lone Star Geyser Trail

Yellowstone National Park, Wyoming

4.8 mi

Distance

472 ft

Elev. Gain

2h 30m

Est. Time

Out & Back

Route Type

Easy

Difficulty

About This Trail

Generated from trail data

Follows an old paved service road, then dirt, nearly level along the Firehole River from the Kepler Cascades trailhead to Lone Star Geyser, a 12-foot cone that erupts 30-45 feet roughly every three hours. The wide, gentle grade is open to bikes (left at a barrier near the geyser) and is one of Yellowstone's most accessible backcountry geyser walks. A logbook at the geyser tracks recent eruption times.

Trail Conditions

Unknown

Updated May 24, 2026 — may be out of date

Legacy import flagged this trail as closed. Verify current status with the land manager before visiting.

No recent condition reports. Be the first to share what you see on the trail.

Hazards & Warnings

Thermal ground — stay on trail near the geyserBear country (carry spray)Unpredictable eruption timing (long wait possible)

Trail Details

No dogs

Route Type: Out & Back
Surface: Mixed Surface

Official sources & verification

Managed by National Park Service

Verify before you go

Source of truth

Agency source page
The page our published rules and notes are derived from.
National Park Service unit page
Alerts, conditions, and the unit's plan-your-visit page.

Verify by phone or mail

Operator:307-344-7381
Address:2 Officers Row, Yellowstone National Park Headquarters · Yellowstone National Park, WY · 82190

Best Seasons

Spring Summer Fall

Highlights

Lone Star Geyser cone eruptions (~every 3 hours)Firehole River corridorKepler Cascades near the trailheadLevel, family- and bike-friendly gradeA backcountry geyser away from the crowds