Photo #1 and Photo #2 show the area of the river crossings near Rockdale. After the crossings, hike/drive 2.6 miles up the road to a large open area which is often used for camping and 4WD parking. Continue 0.3 miles to reach a gate at 11,040‘ (Photo #3) - this is the "upper" trailhead. Pass the gate and continue up the road for another 0.1 mile to a point where road descends toward Clohesy Lake. In this open area, the Missouri trail starts on the left and goes up a small hill - Photo #4.
Leave the road and hike up through trees. Hike over a small hill, stay left, and reach a confusing trail junction near 11,100‘ - Photo #5. Continue straight through the junction and angle up (Photo #6) and away from Clohesy Lake - Photo #7. If you find yourself going straight on a trail along the side of the lake, you‘re on the wrong trail - backtrack and hike east up from the lake to hit the trail for Missouri. Near 11,200‘, reach a trail junction where another trail goes up to the left - Photo #8. This is shortcut trail that was made in recent years and heads southeast up through the trees. It may save you a small amount of time, but the main/old trail is a bit more scenic. The shortcut is often used on the descent. Continue on the old trail (Photo #9) as it gradually climbs the slope and enters the trees.
Near 11,400‘, reach the drainage/stream that runs west out of the basin below Missouri Mountain - Photo #10. Turn sharply left and climb steep terrain along the stream - Photo #11 and Photo #12. Near 11,600‘, and possibly after having to scramble over a few fallen trees, reach the trail junction where the shortcut meets the main trail - Photo #13. Leave the trees and continue along the drainage (Photo #14) to reach the basin below Missouri Mountain - Photo #15. Missouri‘s summit is ahead and Iowa Peak (13,831‘) is off to the right. Your next goal is to hike up a broad, grassy slope to reach the crest of the west ridge. Taken from Huron Peak, Photo #16 is another look at the remaining route. Follow the trail up to 12,200‘ (Photo #17) where it begins to fade away. Pick your line and begin climbing northeast up the slope - Photo #18. Haul up the slope (Photo #19, Photo #20 and Photo #21) until you are at the crest of the west ridge - Photo #22. The cairn seen in Photo #22 is near 12,800‘ and provides a good landmark for your descent.
Find a weak trail and hike northeast along the ridge - Photo #23. Reach a steep section near 13,400‘ and climb onto the first pile of rocks - Photo #24. The crux of the west ridge is next - Photo #25 - a 200-foot section of talus, between 13,500‘ and 13,700‘. Climb steeply through the rocks on the left side (Photo #26) and then angle up to the right to reach the top of this section along the ridge crest - Photo #27.
Above the difficulties, ascend 150‘ on easier terrain to intersect the standard trail that comes up from Missouri Gulch (Photo #28), at the northwest end of the summit ridge. On the defined trail (Photo #29), hike along the summit ridge where you can finally see the summit - Photo #30. More than half way across the ridge, the trail dodges some difficulties by dropping about 20‘ (brief, Difficult Class 2) on the right side of the ridge - Photo #31 and Photo #32. After the drop, follow the trail to the summit - Photo #33 and Photo #34.