Taken from the northeast, Photo #1 shows Little Horn Peaks northeast ridge. Next to the trailhead restrooms, start southwest up the excellent trail and hike 0.5 mile to reach a junction. Turn right onto the Rainbow trail and continue north just 0.1 mile to reach another trail junction. Turn left onto the non-motorized trail which heads southwest toward Horn Creek and hike another 0.5 mile to reach a clearing - Photo #2.
This is a great area to start your hike up to the northeast ridge. Leave the trail and hike northwest up into the forest. Stay just south of a small drainage seen on the topo map and curve west as you follow a subtle shoulder to reach the ridge near 10,900. In summer, this hike up through the forest is little more than minor zig-zagging up through the trees. When you are able to see over the northeast ridge, continue southwest and the ridge becomes more defined. Near 11,200 you get a look at the summit - Photo #3 and Photo #4. Continue along the ridge (Photo #5) to reach tree line, near 11,700 - Photo #6.
Continue on or just left of the ridge crest and the terrain gets steeper near 12,300 - Photo #7. Stay left and start up the first steep pitch - Photo #8. Photo #9 looks back on the lower ridge and Photo #10 shows the remaining ridge, seen from Horn Peak. At 13,000, scramble along the ridge (Photo #11 and Photo #12) to reach a notch - Photo #13. Scramble (easy Class 3) 20 feet down into the notch and turn left to continue along the south side of the ridge - Photo #14. Bypass some difficulties and regain the ridge just before reaching the top of the final false summit - Photo #15. Continue less than 0.2 mile to reach the summit - Photo #16. From the top, Photo #17 looks north to Horn Peak.