Jupiter Mountain  
Condition Updates  
Route: Via Twin Thumbs Pass
Posted On: 2022-07-15, By: Wildernessjane
Info: In case anyone is planning on hitting Jupiter via Twin Thumbs Pass like we did, snow on the pass is avoidable so need need for traction/ice axes unless you want to traverse high. 
Route: Slopes
Posted On: 2022-07-08, By: zootloopz
Info: Summer conditions! Trail is a river below 12,000 up Chicago basin and the columbine pass trail. Up slopes down columbine pass ridge. Got into low 5th class on the ridge, probably avoidable. 
Route: from chicago basin
Posted On: 2022-07-04, By: Laxer04
Info: We climbed from our camp in Chicago Basin. Forecast was iffy so we started early, well before sunrise. We lost the trail in the dark fairly easily - if you can wait for sunrise I would recommend it. We basically just stayed to the left of the stream up to the ridge. We opted to head right on the summit block and that allowed for some fun class 3 moves to the summit. The route is completely snow free. Cheers! 
Route: SW Ridge
Posted On: 2022-06-30, By: daway8
Info: As reported elsewhere, trail from Needleton to Chicago Basin is free of deadfall but has some significant wash-out. From the turnoff between Twin Lakes and Columbine Pass the trail is often extremely muddy with a few downed trees that can easily be bypassed. After leaving the Columbine Pass trail, the trail for Jupiter comes and goes. Highly recommend having gpx files downloaded since it's tricky to navigate between the sporadic rock bands/mini cliff bands in the dark. No snow anywhere on the route. 
Route: Southwest Slopes
Posted On: 2021-08-08, By: LetsGoMets
Info: Took advantage of a zero cloud day and climbed Jupiter after Eolus/North Eolus. Departed Columbine Pass Trail around 11,650 (before stream crossing) and located a solid path near the stream across the meadow. Path and cairns easy to follow up to the upper basin, where you have a couple steep grassy options to the ridge. Register soaked and needs replacement. 
Route: Southwest Slopes
Posted On: 2021-07-21, By: supranihilest
Info: We backpacked in from Purgatory and climbed Jupiter on the same day. The Purgatory Flats trail is in great shape and easy to follow to the Animas River trail and then to Needle Creek Trail. Needle Creek trail had dozens of downed trees, maybe even more than 100, which slowed things down. There were beaten paths around all the deadfall. Camping in Chicago Basin was kind of a pain due to the crowds but it seemed like there were plenty of open spots above the Twin Lakes/Columbine Pass junction. From camp we took the Columbine Pass trail up a bunch of switchbacks and past an open mine until we could see Jupiter's large southwest amphitheater. We left the trail there and made a short traverse through the forest to treeline, and then up grassy slopes to climber's left all the way to the ridge. These slopes are steep and generally good for hiking up, but beware if wet - they'd be very slippery and steep enough that it would be hard to control a fall. Once on the ridge things became rockier, Class 2 granite boulders and talus, until we were about a third of mile from the summit. There was some scrambling to reach the summit ranging from Class 2+ to Class 4 with plenty of options to keep things easier. Rock quality was generally good, exposure was high in some spots. 
Route: Southwest Slopes
Posted On: 2021-07-03, By: MC.Ikema
Info: Snow free to the top. Started from our camp in Chicago Basin. 
Route: Chi Basin
Posted On: 2020-08-24, By: CaptCO
Info: Summit needs paper. Unexpected false summit leads to borderline class 2+/3 depending on your line. Water is still running after the Columbine split up to the meadow. Someone was using a chainsaw near the cabin and had several horses/donkeys 
Route: Purgatory
Posted On: 2019-09-04, By: angry
Info: Dry/summer conditions all the way. Lots of people in Chicago Basin, but I had the summit to myself. 
Route: Southwest Slopes
Posted On: 2019-08-05, By: Bailey Tyson
Info: No traction (crampons or micro spikes) or ice axe needed. Standard route is good to go. Chicago Basin approach from Needleton is dry and in normal summer condition save for one small area of avalanche debris, which is easily navigated/bypassed as others have noted. 

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