Lost Lake Trail Details

Activities
- Mountain Bike
- Hike
- Trail Running
Riding Area

Seward
, Alaska
Difficulty Rating

Blue Rate
Voted Difficulty

Blue (1 vote)
Local Popularity
100 in Mountain Biking [+]
- 100 in Trail Running
- 85 in Hiking
Global Ranking
#10154 in Mountain Biking [+]
- #77412 in Trail Running
- #31033 in Hiking
Hiking SAC Scale

T1 Hiking
Trail Type

Singletrack
Bike Type

AM, XC
Direction

Both Directions
Climb Difficulty

Black Diamond
Physical Rating

Hard
Trail Visibility

Always easy to follow
Dogs Allowed

Yes
TTFs on Trail

Bridge
Land Owner

USFS - Chugach National Forest Office

Lost Lake starts at its namesake trailhead. After a very quick downhill out of the gate, the route climbs up through big forest. The trail is somewhat wide for singletrack and a bit technical with roots and rocks.

Stay straight when the trail intersects with a doubletrack and then bear left at an intersection with the winter/horse route.

From here the trail narrows and skirts a rocky hillside. The valley to your left drops away as you climb up and through a shallow waterfall. Continue pedaling up through the dark forest around small bands of shale-laden cliffs.

As the valley begins to close, the route transitions to a section of open forest. You'll be traveling right along side and only a few inches above a tiny creek. After a few bends in the trail you'll get through this section and then start hear the waterfalls in another giant valley that you'll ride above.

The route transitions again. You're still in the forest but will have an awareness that you're very high up above another giant valley. As you continue climbing, the big trees give way to big shrubs and big mountains. It's hard to keep your eyes on the trail at this point.

The ascent continues to be steady and a little rocky. Lost Lake is a very popular route so the trail is also a little trenched in places.

Pedal up a few punchy sections on the way to the upper intersection with the winter route. Stay left to continue towards the lake. The grade begins to less on roll across alpine meadows and dry marshes. The route winds its way across narrow trail through small stands of twisted pine and spruce.

There's one more section of steep climbing before rolling downhill to the lake. It's well worth the effort with the best views available. On three sides you're surrounded by mountains and one side with Resurrection Bay.

After a break at Lost Lake, retrace your steps and enjoy the spectacular experience in reverse back to the trailhead.

Bear and moose are present in the area. The best way to avoid an interaction is to not surprising an animal. Use bells, sing and/or travel in a group.

Access Info

This ride can be done from either of 2 trailheads: on Lost Lake Trail Road about 5 miles from Seward. As you are driving into Seward, take a right hand turn on Scott Way (this turns into Rough Dr.) at the T intersection take a left hand turn onto Heather Lee Ln, from there take a right hand turn onto Hayden Ln (this turns into Lost Lake Trail Rd) the parking lot is at the end of the road. The second start is at the Primrose Campground, about 17 miles from Seward. As you are driving toward Seward (111 miles from Anchorage) take a right hand turn onto Primrose Spur Rd and the parking lot is at the end.

Trail Supporters

USFS
Land Manager

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week

3 rides
17 miles average

6 Months

9 rides
13 miles avg distance

All

114 rides
Last: Jul 7, 2026

c1	c2	c3	c4
January	February	March	April
May	June	July	August
September	October	November	December

update trails status or condition

Lost Lake Trail Trail Reports

status	date	description
	Jun 4, 2026 @ 11:26am (America/Anchorage) Jun 4, 2026	significant snow pack @ 2.85 miles. creeks are a flowin'. Mud and moisture are patchy.
	Jul 31, 2025 @ 11:12am Jul 31, 2025
	Aug 4, 2024 @ 8:28pm Aug 4, 2024	Excellent conditions. It’s been brushed too. Though each time I ride the trail it gets a little bit more technical, which is fun.
	Jul 17, 2024 @ 5:26am Jul 17, 2024	One small snow patch. A bit wet in some spots. Pretty good overall.
	Jul 3, 2022 @ 10:57am Jul 3, 2022	Foilage beginning to get large, but mostly passable. Most streams are bone dry now - early melt-off.