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© 2026 Roaming.Camp · Data from NPS, Recreation.gov, BLM, USFS, NWS, and the FCC.Operating on ceded ancestral land.Photography via Unsplash.

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Ptarmigan Peak. Chugach State Park, Chugach Mountains, Alaska

Hike

Flattop Trail

Summits Flattop Mountain
1,397 ft of climbing

3.0 mi out & back · 1,397 ft gain · 3,547 ft high point · Hard

From Glen Alps Trailhead

AK · OpenStreetMap contributors

About Elevation Highlights Map Camp near here More hikes

About this hike

Flattop Trail is a 3-mile out and back from Glen Alps Trailhead summiting Flattop Mountain at 3,547 feet with 1,397 feet of climb.

Elevation

1,397 ft of gain round trip.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

11.9 mi from the trailhead
Porcupine Cabin
Campground · AK

More hikes nearby

Ranked the same way, within twenty-five miles.

12 mi from you
Hope Point Trail
- Summits Hope Point
- Inside Chugach National Forest
- 3,789 ft of climbing
8.6 mi out & back · 3,789 ft gain · Very hard
Chugach National Forest · Camp under a mile away

Out: 1,330 ft up, returns the same way. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Flattop MountainDestination · 1.5 mi in
Glen Alps LookoutNearby · 0.0 mi in
Blueberry KnollNearby · 0.3 mi in
Peak TwoNearby · 1.5 mi in

Nearby reading

Flattop Mountain (Anchorage, Alaska)

Map

The route at the trailhead. Drag with two fingers, or hold a key to zoom.

Trail data: USFS, NPS, © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP via Mapzen terrain tiles. Nearby reading: Wikipedia. Photos: Wikimedia Commons contributors, licensed as shown on each photo. Download the trail and feature data.

At a glance

Length: 3.0 mi
Shape: Out & back
Gain: 1,397 ft round trip
High point: 3,547 ft
Low point: 2,235 ft
Difficulty: HardFrom 3.0 mi and 1,397 ft of climbing, with steep sections
Managed by: OpenStreetMap contributors
State: AK
Camps within 15 mi: 2
Start: Glen Alps Trailhead
Trailhead: 61.1030° N · 149.6833° W

Get directions Open the map

11.9 mi from the trailhead

Porcupine (Ak)

Campground · AK

5 mi from you

McHugh Peak Trail South

Summits McHugh Peak
4,522 ft of climbing

7.8 mi out & back · 4,522 ft gain · Very hard

AK · Camp 6 mi away

Wolverine Peak via Basher

Summits Wolverine Peak
3,701 ft of climbing

8.0 mi out & back · 3,701 ft gain · Very hard

AK

McHugh Peak Trail North

Summits McHugh Peak
2,644 ft of climbing

5.4 mi out & back · 2,644 ft gain · Very hard

AK · Camp 10 mi away

Harp Mountain Trail

Summits Harp Mountain
2,702 ft of climbing

3.0 mi out & back · 2,702 ft gain · Hard

AK

Kern Creek Trail

Ends at a viewpoint
Inside Chugach National Forest
1,301 ft of climbing

1.5 mi out & back · 1,301 ft gain · Moderate

Chugach National Forest · Camp 10 mi away

More like this

Hikes that read like this one, wherever they are.

Flattop Mountain Trail
- Passes Flattop Mountain
- Inside Rocky Mountain National Park
- 2,979 ft of climbing
8.6 mi out & back · 2,979 ft gain · Very hard
Rocky Mountain National Park · Camp 3 mi away
Flat Top
- Near Round Mountain
- Inside Apache National Forest
- 1,068 ft of climbing
7.0 mi out & back · 1,068 ft gain · Moderate
Apache National Forest · Camp 12 mi away
Flat Top Trail
- Passes Flat Top Mountain
- Inside Blue Ridge Parkway
- 3,459 ft of climbing
9.2 mi out & back · 3,459 ft gain · Very hard
Blue Ridge Parkway · Camp under a mile away
Flat Top Mountain Trail
- Ends at Bear Lake
- Inside Rocky Mountain National Park
- 5,739 ft of climbing
16.6 mi out & back · 5,739 ft gain · Very hard
Rocky Mountain National Park · Camp 3 mi away

Signal

Cell coverage here

VerizonLTE · Good
AT&TLTE · Poor

FCC coverage data · signal varies in remote terrain

Weather

7-day forecast

Tue34°27°Rain And Snow
Wed31°26°Slight Chance Light Snow
Thu32°19°Slight Chance Light Snow
Fri27°18°Slight Chance Light Snow
Sat21°15°Mostly Cloudy
Sun21°16°Chance Light Snow
Mon26°Chance Light Snow

Tue: Rain And Snow · wind 10 to 30 mph E

National Weather Service · refreshed hourly