Osceola-Carru-Lago-Blackcap-Lost Traverse


Alpine Scramble - Pasayten Outing

Hopefully catch some larches on a loop in the Pasaytens where we'll scramble Osceola, Lago, Carru, Blackcap and Ptarmigan.

  • Strenuous 5, Technical 5
  • Challenging
  • Mileage: 47.0 mi
  • Elevation Gain: 17,500 ft

Wednesday, Sept 27 - 7:30am -  Slate Pass Trailhead - America the Beautiful or Northwest Forest Pass required - https://goo.gl/maps/zsKMNjW2znsFxEn2A

I am happy to carpool from Ash Way Park & Ride (4h 20min) - https://goo.gl/maps/fENndp6zqtkPmQU58
But I would prefer to leave the afternoon/evening before the trip start and sleep in my car to get an early start on Day 1.

Plan on a slow, but steady pace for five days of scrambling with overnight packs. Please only request leader permission if you feel confident in your scrambling with overnight pack ability and your stamina to keep going for the entire length of the trip.

Plan on having an online discussion and spreadsheet about group gear roughly two weeks prior to the trip start date. 


Day 1 - Parking Lot to Lake Doris - 11.73mi, 2617ft gain

Set up camp

Scramble Osceola - 2.25mi, 1583ft gain


Camp at Lake Doris

Day total - 14mi, 4,200ft gain

Munter - 11 hours


Day 2 - Lake Doris - Blackcap summit - Dot Lakes

Lake Doris to Blackcap summit - 5.81mi, 3023ft gain

Blackcap to Dot Lakes - 5.18mi, 1760ft gain


Camp at Dot Lakes

Day total - 11mi, 4,783ft gain

Munter - 13 hours


Day 3 - Dot Lakes - Ptarmigan summit - Tarn Campsite - 2.64mi, 1632ft gain

Partial rest day - can sleep in and take it easy


Camp on Ptarmigan ridgeline at a tarn - hoping for gorgeous views

Day total - 2.64mi, 1632ft gain

Munter - 5 hours


Day 4 - Tarn - Dot summit- Lago summit - Carru summit - Fred's Lake - 8.36mi, 4338ft gain


Camp at Fred's Lake (or further depending on how we're feeling)

Day total - 8.36mi, 4338ft gain

Munter - 13 hours


Day 5 - Fred's Lake - Parking Lot - 10.7mi, 2401ft gain


Day total - 10.7mi, 2401ft gain

Munter - 7 hours


Trip totals - 46.7mi, 17,354ft gain

Trip Map - https://caltopo.com/m/609QC

Trip Research Map - https://caltopo.com/m/E1QQ0

When asking for permission please include : Your lighterpack or spreadsheet of your overnight gear or a description of. Also, I would love to hear about any other long distance scramble or backpack you've done. A general idea of your food for an extended trip with weight per day. 

Please feel free to reach out to me if you have any questions or concerns prior to the trip and I'll do my best to help out in any way I can! My email is erica.an.rickard@gmail.com 


Osceola-Carru-Lago-Blackcap-Lost Traverse

  • Green Trails Pasayten Peak No. 18

    Green Trails Washington Pass No. 50

    Green Trails Billy Goat Mountain No. 19

    USGS Mt Lago

    USGS Lost Peak
  • See full route/place details.
Required Equipment

Required Equipment

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