Hike Alberta
Lost LakeRummel Lake 1 km N
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Lost Lake Route

Near Fortress Mountain Resort · Spray Valley Provincial Park

Hard · Out and back

Footbridge over Galatea Creek on the approach
Footbridge over Galatea Creek on the approach. Photo by davebloggs007 on Flickr, CC BY 2.0, via Wikimedia Commons

Trail score 71 out of 100, from popularity, scenery and trail quality

Lost LakeRummel Lake 2 km Open the map

About this trail

Lost Lake Route is a 13.7 km out and back trail near Fortress Mountain Resort in Spray Valley Provincial Park. It runs 6.9 km each way. The route gains 791 m in total and tops out at 2,397 m. Hike Alberta rates it hard. Allow about 6 hours of moving time. It meets The Tower Route at 5.3 km. Along the way you pass Lost Lake and Rummel Lake and a campground. Also used for backpacking.

Length
13.7km
6.9 km each way
Elevation gain
791m
Estimated time
6h
Moving time
Route
Out and back
Highest point
2,397m
Lowest point
1,813m

Elevation profile

1,813 m to 2,397 m
2,3971,813 0 km6.9 km

Highest point 2,397 m, lowest 1,813 m, 791 m of climbing in total. Steepest sustained grade about 52% over 100 m.

Predicted coverage: 73% of route

0% LTE · 73% 5G

Longest modelled gap
1.8 km
Model
2024 · Natural Resources Canada

Predicted coverage is not guaranteed. It varies by carrier, terrain, weather, device and network load, and it does not guarantee emergency service.

Along the way

  1. 2.7 kmLost LakeLake
  2. 6.6 kmRummel LakeCampground

Good for

  • Hiking, Backpacking
  • Dog friendly (on leash)
  • Lake, Views, Camping, Alpine

Rankings

Trailhead

The trail starts at 50.8632° N, 115.2252° W.

Driving directions

Kananaskis Conservation Pass

Vehicle pass required when parking

Buy pass

Pass details

Vehicles parked at provincial park and public land sites in Kananaskis Country and the Bow Valley need this pass. It is registered to the licence plate. People arriving without a vehicle do not need one, and official exemptions and free days may apply.

$15 daily for one vehicle · $90 yearly for up to three vehicles

Information and prices checked October 21, 2026.

Official details

Before you go

Carry an offline map and plan for no service in backcountry areas. Trails close for wildlife, fire, weather and construction. Check the official sources:

Nearby trails

All 44 trails in Spray Valley Provincial Park

Trail data © OpenStreetMap contributors, ODbL
Elevation © Mapterhorn from NRCan HRDEM (Open Government Licence Canada) and Copernicus GLO 30