Iceberg Ptarmigan Trailhead

Iceberg Ptarmigan Trail: 9.6 mi RT, 1,210 ft gain to Iceberg Lake. Tough but rewarding.

Insider tip

Hike Ptarmigan Tunnel first if combining destinations; steeper sections wait there.

Insider tip

Arrive before 8 AM to secure parking and reduce crowds.

When to come

Start around 6:00-7:00 AM during July–September to beat crowds and afternoon storms; plan for weather variability.

Trail

TrailOPERATIONAL★ 5

YOUR VISIT, YOUR WAY

What would you love to do here?

Turquoise Iceberg Lake beneath rocky cliffs can anchor a Many Glacier hiking day. Ptarmigan Falls offers a shorter turnaround from the same trailhead, but still requires a substantial walk. Check current trail and access conditions; neither parking nor nearby services are guaranteed. Carry water, food, layers and bear spray, stay together and use caution near water and dropoffs. No Glacier vehicle reservation is required in 2026; congestion restrictions can still apply.

Make Iceberg Lake the main hike

Make the lake the main outing: NPS lists 4.8 miles each way, or 9.6 miles round trip. Expect substantial climbing and allow for the return; floating ice may be present but is not guaranteed.

Iceberg-Ptarmigan Trailhead behind Swiftcurrent Motor Inn · High effort

With children

Choose this only if everyone can manage a long hike with climbing and the return. Carry enough food and water, and turn back before the group is exhausted.

Choose Ptarmigan Falls for a shorter turnaround

Turn around at Ptarmigan Falls instead of continuing to Iceberg Lake. NPS lists about 2.7 miles each way to the falls; this is still a hiking outing, not a roadside stop.

Ptarmigan Falls, reached from Iceberg-Ptarmigan Trailhead · Moderate effort

With children

A shorter option to consider for families, while conditions, pace, and individual ability still determine suitability.

Saved choices are ideas, not reservations. Check current access, conditions and opening times before travel.

Planning sources · checked September 7, 2026

This out-and-back climbs 2,300 ft over 10.6 miles from the Swiftcurrent area, passing Ptarmigan Falls at 2.3 miles and leading toward the Ptarmigan Tunnel approach. Prepare for bears and seasonal snow.

Quick facts

Distance Miles
9.6
Route Type
Out-and-back
Difficulty Level
Moderate to difficult
Elevation Gain Feet
1210

CHOOSE YOUR NEXT WALK

Is this the right hike for your day?

Why choose this hike?

Trail Highlights
Iceberg Lake viewpoint with any floating icebergs; Ptarmigan Falls; Ptarmigan Tunnel with broad views; dramatic alpine meadows and surrounding cirques
Best For
  • Hikers seeking a long, challenging day hike
  • Wildlife watchers

What the outing demands

Effort Verdict
Strenuous, 10.6-mile out-and-back with 2,300 ft of elevation gain. Not technically difficult, but it demands endurance and a full day on the trail; plan 7–8 hours for fit hikers.
Estimated Time
4-5 hours to Iceberg Lake; 6-7+ hours for a combined Ptarmigan Tunnel + Iceberg Lake hike

Where and when it fits the day

Trailhead Location
Iceberg-Ptarmigan Trailhead, behind the Swiftcurrent Motor Inn in the Many Glacier Valley
Best Time To Visit
Start around 6:00-7:00 AM during July–September to beat crowds and afternoon storms; plan for weather variability.

Explore your choices Choose your visit options.

Trail profile

Distance Miles
9.6
Route Type
Out-and-back
Difficulty Level
Moderate to difficult
Elevation Gain Feet
1210
Trail Surface
Packed dirt, meadow paths, rocky sections, scree near Ptarmigan Tunnel
Trail Features
  • Iceberg Lake (seasonal icebergs)
  • Ptarmigan Tunnel
  • Ptarmigan Falls
  • alpine meadows
  • wildflowers
  • cirque walls
  • potential wildlife sightings (moose, bears, mountain goats, bighorn sheep)

Trailhead & access

Parking Lot Size
Approximately 15-20 spaces directly at the trailhead; overflow parking at the Swiftcurrent Motor Inn
Parking Fill Time
Full by 7-8 AM during peak season
Shuttle Required
Yes
Shuttle Details
Glacier National Park operates a shuttle system on the east side; useful if parking fills early or to bypass parking congestion

Permits & conditions

Permits Required
Yes
Permit Details
Vehicle reservations required to drive Many Glacier Road during peak season (July 1–September 8). Backcountry permits needed for overnight stays
Fees
Park entrance fee; vehicle reservation fees may apply
Trail Status
Open
Seasonal Closures
Snow can linger into July in shaded/high-elevation sections; mud season possible in spring

Facilities & rules

Restrooms At Trailhead
Yes
Water Sources
Water available at Swiftcurrent Motor Inn; filtered water at Ptarmigan Falls; carry sufficient water for the entire hike
Accessibility
Rooty and uneven with long distance; some steep sections; not wheelchair accessible

Safety & strategy

Hazards
  • Bear country (grizzly and black bears)
  • Afternoon thunderstorms
  • Lightning exposure
  • Slippery rocks near water
  • Snowfields in early season
Cell Service
Terrible in and around the park
Crowd Level
Very popular; can be crowded, especially Iceberg Lake
Peak Crowd Times
Mornings, especially weekends; plan midweek or early start
Parking Strategy
The Iceberg-Ptarmigan Trailhead has about 15 parking spaces; overflow is at the Swiftcurrent Motor Inn. Arrive before 7:00 am during peak season, as the lot fills early. A Many Glacier Road reservation may be required July 1–Sept 8. If needed, you can use the Amtrak shuttle to Apgar Village or Lake McDonald Lodge for a different access point.
Ideal Hiker Profile
Fit day hikers who can handle 10.6 miles with about 2,300 ft of gain, good footing, and strong endurance. Be prepared for bear country and changing weather; carry bear spray, a water filter, trekking poles, and appropriate layers.
Best Season
Summer to early fall (July–September)
Tips Advice
  • Carry 2 liters of water minimum.
  • Bear spray and noise to deter wildlife.
  • Trekking poles helpful on scree and snow.
  • Start cold, layer up, and monitor storms; turn around if lightning threatens.

More details

Trail Markers
Bring map; trail markers exist but navigation is essential
Dogs Allowed
false
Biking Allowed
false
Shade Level
Mixed forest cover with significant sun exposure at higher elevations; more shade in the lower sections
Emergency Contacts
Glacier National Park rangers; local authorities; call 911 for emergencies
Map Recommended
Yes
Snow Dates
Snow can linger into July at higher elevations; be prepared for remaining snow patches
Mud Season
Mud can be heavy in early season or after rain
Fall Colors Peak
Late September to mid-October
Bug Season
Mosquito activity prominent in July and August
Insider Tips
  • Hike Ptarmigan Tunnel first if combining destinations; steeper sections wait there.
  • Arrive before 8 AM to secure parking and reduce crowds.
  • If alone with kids, focus on Iceberg Lake; tunnel section is more challenging.
Recent Updates
Check recreation.gov for 2026 timed-entry vehicle reservation dates for Many Glacier area. Trail may have late-season snow; verify conditions on NPS Glacier status page before hiking.
Family Friendly Notes
Hike to Iceberg Lake is strenuous but doable for families with older children; Ptarmigan Tunnel adds exposure
Nearby Facilities
Swiftcurrent Motor Inn (trailhead area bathrooms); vault toilet about 2.3 miles to Ptarmigan Tunnel
Photo Ops
Photo opportunities include Ptarmigan Falls at 2.3 miles and the approach to Ptarmigan Tunnel. Forested sections and open meadows offer varied light; early morning or late-day light yields the best shots.
Review Summary
Hikers report a brutal but rewarding climb; Iceberg Lake delivers consistent payoff with wildlife and alpine scenery. Crowds are common; start early and consider mid-week trips to avoid congestion.

Location

Iceberg Ptarmigan Trailhead at Glacier National Park, snow-dusted peaks rise above dense evergreen valley.Iceberg Ptarmigan Trailhead overlooking a snow-dusted basin and icy Glacier Lake in Glacier National Park.Iceberg Ptarmigan Trailhead lies beside a rushing creek shaded by evergreen trees with distant mountains in Glacier National Park.Iceberg Ptarmigan Trailhead at Glacier National Park winds through a sunlit pine forest along a dirt trail.

Frequently asked questions

Are there bears on this trail?

Yes. Bear country is common; carry bear spray and travel in groups, making noise as you move.

Is this hike kid-friendly?

Iceberg Lake portion is strenuous but doable for older kids; Ptarmigan Tunnel adds exposure and more challenging terrain.

Do I need a permit for this hike?

Day-use permits are generally not required, but vehicle reservations are required for Many Glacier Road during peak season; backcountry permits are needed for overnight stays.

How crowded is it and when should I go?

Very popular; start early or go mid-week to dodge crowds and afternoon storms.

Is a map or navigation essential?

Yes. The terrain is exposed in sections, and cell service is poor; map or GPS is highly recommended.

What’s the best strategy if combining Iceberg Lake with Ptarmigan Tunnel?

Head to Ptarmigan Tunnel first to tackle the steeper sections, then descend toward Iceberg Lake for the payoff.

Where can I park if the main lot is full?

Overflow parking is available at the Swiftcurrent Motor Inn; arrive before 8 AM to secure a spot.

Avalanche Lake Trailhead

5.65 miles round-trip, 757 ft gain. Pack water, bear spray, and start before dawn to beat crowds.

Apikuni Falls Trail

Steep waterfall crusher: 0.8 miles, 651ft elevation gain. Short burst, big payoff.

Swiftcurrent Lake Trail

Flat 2.6-mile loop. Lake views, historic buildings, accessibility options. Start early to dodge crowds.

Sources

Editorial review: YourNPGuide Editorial Team. Information is compiled from official sources, verified traveler reviews, and editorial research; no firsthand visit is implied unless explicitly documented. Learn how YourNPGuide works.

Last updated December 2025. Report an issue.