Bears are present in Yellowstone, but Mammoth is heavily visited and developed. Make noise anyway. Thermal features pose a far greater hazard than bears at this location.

Mammoth Hot Springs Boardwalks - 2mi Strenuous

Q: Do I need special gear?

No technical gear required, but trekking poles save your knees on the descent. Good boots with ankle support are essential for stairs and uneven surfaces.

Q: Can I do this if I'm not very fit?

Lower Terraces (30 min) are fine for most fitness levels. The full loop (60-90 min) with stairs is moderately strenuous—be honest about your stair tolerance before committing.

Q: What if heights scare me?

Some boardwalk sections have exposed edges with railings. Not technical exposure, but vertigo-prone visitors should stick to Lower Terraces only.

Distance

2 mi

Elevation Gain

400 ft

Est. Time

30-90 minutes depending on route; plan 60 minutes for the main loop

Route Type

Boardwalk network with multiple loops and access points

Dogs Allowed

Best Season

Late spring through early fall (May-September)

Overview

About This Trail

Explore Yellowstone's most accessible geothermal laboratory via a network of boardwalks and paved terraces climbing 400 feet over 30-90 minutes depending on your route. The Lower Terraces offer an easy pass through cream-and-rust-colored mineral formations; the Upper Terraces demand steeper boardwalks and several hundred stairs for brilliant white and turquoise spring views. This is geology in real-time: limestone dissolving, travertine depositing, terraces shifting annually. Pick your entrance point honestly and respect thermal hazards.

Highlights

Difficulty Level

Mixed: Easy boardwalks to strenuous upper sections

Trail Highlights

The travertine terraces: brilliant white and turquoise upper formations contrasting with rust and cream-colored lower terraces, all sculpted by geothermal forces over centuries

Insider Tips

• Start at Lower Terraces first if uncertain of fitness; you can always extend to Upper Terraces • The money shot is Canary Spring—brilliant colors and rare mineral deposits • Early morning (before 9 AM) offers best light for photos and fewest crowds • Boardwalks shift annually; don't expect identical routes year to year • Descending stairs faster causes knee pain; slow down • Thermal pools appear static but are constantly changing; return in different seasons to see shifts

Best Season to Hike

Late spring through early fall (May-September)

Hiking Tips

Stay on designated boardwalks and trails at all times—thermal features are real and unforgiving
Bring at least 2 liters of water; boardwalks offer zero shade
Wear sturdy boots with good ankle support for stairs and uneven surfaces
Trekking poles are non-negotiable for the descent; save your knees
Cell service is intermittent; carry a whistle or communication device
Never touch mineral deposits or approach active thermal features
Inspect stairs before descending; wet surfaces are slippery

Family Info

Families with young children can enjoy flat Lower Terrace boardwalks (30 min). Upper Terraces with steep boardwalks and several hundred stairs unsuitable for toddlers. Close supervision essential due to thermal hazards. Teach children to stay on boardwalks—thermal features are not forgiving. No strollers recommended due to stairs.

What Hikers Say

Hikers praise the unique geothermal views and short duration, but several hundred stairs and steep sections challenge many visitors. The thermal hazards and high altitude add intensity beyond typical boardwalk walks of similar distance. Most report the payoff is worth the leg burn.

Details

Trail Specifications

Distance: 2 miles

Elevation Gain: 400 ft

Duration: 30-90 minutes depending on route; plan 60 minutes for the main loop

Difficulty: Mixed: Easy boardwalks to strenuous upper sections

Route Type: Boardwalk network with multiple loops and access points

Surface: Paved boardwalks and asphalt with steep stairs, uneven sections, and mineral-dusted surfaces

Getting There

Trailhead: Two miles south of Albright Visitor Center on Grand Loop Road; multiple entry points on Upper Terrace Drive

Fills Up: By 9:30 AM on summer weekends; arrives early or expect to circle

Requirements

Permit Required

No permits or reservations required

Fees: $35 Yellowstone entrance fee (private vehicle, valid 7 consecutive days)

Shuttle Available

Not required; ample parking at Mammoth Upper Terrace Drive and Mammoth Visitor Area

Trail Rules

Dogs: No

Trail Markers: Well-marked boardwalks with signage at every major junction and viewpoint

Map/GPS recommended

Trail Features

Conditions & Safety

Water: No water sources on the trail; carry all water you need—minimum 2 liters

Shade: Full sun on most boardwalks; minimal shade anywhere; wear a hat and sunscreen

Cell Service: Intermittent at trailhead; unreliable throughout the trail network

Hazards:

Thermal features throughout—boiling water, caustic minerals, unstable ground. Leaving the boardwalk is dangerous. Steep stairs and boardwalks become slippery when wet or icy. Several hundred stairs create knee strain on descent. High altitude (Mammoth is ~6,239 feet) may cause exertion for unacclimatized visitors.

Emergency: Yellowstone Emergency: 911; Mammoth District Ranger Station (available during business hours)

Crowd Info

Typical Crowds: Conga line in summer, especially midday; moderate in shoulder seasons; Ghost town in winter

Peak Times: Mid-morning through late afternoon (10 AM-4 PM) June-September; weekends are busiest

Accessibility & Family

Accessibility:

Wheelchair-accessible overlooks at Canary Springs and Palette Springs when snow-free. Lower Terrace boardwalks are paved but have steep grades. Upper to Lower Terrace route includes several hundred stairs and steep boardwalks—not suitable for mobility limitations. Overall: paved surfaces with significant elevation changes and stairs throughout.

Family Notes:

Nearby Facilities

Mammoth Visitor Center nearby; Mammoth District Ranger Station on-site. Mammoth Campground 2 miles north. Limited food and supplies at Mammoth; plan accordingly or bring provisions.

What Hikers Say

FAQs

Is this safe for kids?

Lower Terraces (30 min) are safe for most ages if supervised. Upper Terrace with stairs requires children old enough to follow strict trail rules and handle 400 feet of climbing—kids under 8 may struggle.

Do I need special gear?

Can I do this if I'm not very fit?

Are there bears?

What if heights scare me?

🏞️ National Park Service 📝 YourNPGuide Editorial

Information is compiled from official sources, verified traveler reviews, and editorial research. Learn how YourNPGuide works →

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