Combination Route
standard Castle and Conundrum
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Difficulty:
 Difficult Class 2 
Risk Factors:Exposure: Considerable
Rockfall Potential: Considerable  
Route-Finding: Considerable  
Commitment: Considerable  
 
Trailhead:Castle Creek
Start:9,800 feet
Summit:14,265 feet
Total Gain:4,850' if you start at the main trailhead
3,350 feet if you start at 11,200'
RT Length:14.5 miles if you start at the main trailhead
8 miles if you start at 11,200'
USGS Quad.:Hayden Peak
County Sheriff:Pitkin: 970-920-5300
National Forests:White River, Gunnison
Wilderness Area:Maroon Bells - Snowmass
Author:BillMiddlebrook
Last Updated:10/2020

Trailhead

Take Castle Creek from the roundabout just west of the center of Aspen. Drive 12.5 miles (paved) to the Castle Creek trailhead. To the right, Forest Road (FR) 102 continues all all the way to 12,800'. Good-clearance passenger cars can drive about 1 mile up this road to reach the dispersed camp sites along the road. If you want to shorten your hike by parking higher, you must have a 4WD vehicle with good clearance. From the lower trailhead parking area, proceed to a river crossing, at 1.3 miles. In spring and early summer, this crossing is a challenge for some 4WD vehicles. At 3 miles, reach the Pearl Pass junction and stay right on the Castle Creek 102 road. If you drove up this far, there are a few parking spots near the junction. The road gets worse as it ascends into Montezuma Basin all the way to 12,800'.

Route

Follow Castle Peak's Northeast Ridge Route (#1) to the summit of Castle ( 39.009647° N, -106.86144° W). From the top, Conundrum Peak is clearly visible to the northwest - #1. Begin the traverse by descending northwest down Castle's northwest ridge - #2 and #3. As you descend, it quickly becomes clear the ridge holds plenty of loose rock. Continue down and pass some rock outcroppings along the way - #4. About half way down the ridge the pitch eases a bit (#5) as you make your way toward the Castle-Conundrum saddle. Continue along the ridge crest and then along the left side (#6) to reach the saddle (13,790') - #7 and #8.

From the saddle ( 39.01309° N, -106.86384° W), the route up Conundrum's south ridge is fairly obvious - stay near the ridge crest and follow trail segments up through loose rock and small ledges to reach the summit ridge - #9. Hike up a short distance, pass a rock outcropping (#10), and continue to reach a flat area - #11. Above this area, the terrain gets a bit steeper but the difficulty does not exceed "Difficult Class 2." Look for trail segments and breaks in the rock which provide easy passage - #12. Continue to reach the south end of the summit ridge - #13 and #14. Conundrum has two "summits" and the true one is to the north. Hike to the middle of the summit ridge to reach a notch between the two summits - #15. Drop into the notch, cross the flat area and climb the final pitch (#16) to reach the summit ( 39.01563° N, -106.86294° W) - #17 and #18.

Return to Conundrum's south summit and descend back toward the Conundrum-Castle saddle - #19. Now, for your descent into the upper basin. If the pitch below the saddle is snow-free, you should consider going back over Castle and down the standard ridge because without snow, the pitch holds loose rubble and may be an uncomfortable descent for some. If it's snow-covered, put on your boot traction, pull out your axe and just before the low point of the saddle, turn left and begin your descent - #20 and #21. Before reaching the low point of the basin, stay left and traverse along the side to avoid losing ground - #22 and #23. Continue northeast out of the upper basin, descend the headwall and walk back to the road - #24.

Notes

IMPORTANT: This route enters the Maroon Bells - Snowmass Wilderness area. Wilderness areas have special regulations and restrictions for party size, dispersed camping, campfires, etc. Also, dog owners should read the wilderness information carefully because some wilderness areas prohibit dogs to be off-leash and/or limit how close dogs can be to lakes and streams. If you have questions about the wilderness area, please contact a U.S. Forest Service office for the National Forest(s) listed above.

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