Driving past Big Sky

About 20 miles to the trailhead.

Should get there about sunrise.

With only 11 hours of daylight, not sure I can do the 21 miles and get back before dark.

Will pack necessary stuff for a 12 hour hike.

In this terrain and elevation, 1.5 - 2.0 miles per hour is about the max.

So 21 miles is at least 12 - 13 hrs of hiking.