Peak 10,420 is a quick but steep hike up to a high summit with 360 degree views. If you're more adventurous with your kids, you can continue on to Clayton Peak. It's a bit of a haul but I was able to carry both my kids up Clayton. Older kids should be able to handle it just fine.
Start up from the parking area at Guardsman Pass. The trail is the steeper trail going up. It climbs up the ridge in and out of the trees until finally leveling out near the summit of Peak 10,420. Here there is a trail split, go left and up a short distance, you'll be on top. Go right and you begin to descend down to the saddle between Peak 10,420 and Clayton Peak. From the saddle, a trail drops down to Lackawaxen Lake. You'll be taking the trail up the ridge toward the visible summit. It becomes more of a climbers trail near the summit.
Distances: 0.5 miles/1.2 miles
Elevation Gains: 500 feet/1,561
Summit Elevation: 10,420/10,721
Kids difficulty rating: Moderate
Access rating: Level 1
Clayton Peak & Peak 10,420
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Drive up Big Cottonwood Canyon turning left on Highway 152 just before the Brighton Ski area. Continue up this road until you reach Guardsman pass and the road turns to gravel. Parking is on the right. The pass is popular with tourists as you can continue on beyond the pass on a nice gravel road into Park City.
Between the peaks
Clayton Peak from the saddle between the peaks
Summit mailbox full of letters
Kids asleep on top
Aaaa, summit nap
Views from Clayton Peak looking south
Views from Clayton Peak looking west
American Fork Twin Peaks
Mill Canyon Peak
Box Elder Peak
Sunrise on Clayton Peak from Mill Canyon Peak
View from Clayton Peak from Peak 10,420
Looking at the Guardsman Pass road on its way to Park City
Climbing up peak 10,420 with Guardsman Pass and Tri-County Peak below