Tomichi Route

Overview

Tomichi is the South Rim’s full-value inner-canyon route: short on miles, huge on vert, and unapologetically rugged. From Tomichi Point (near the South Rim campground/visitor area), you’ll follow Rim Rock Trail to post #13, then leave the rim for a very steep, unmarked gully of loose dirt, scree, and broken rock. It’s roughly 1 mile one way to the Gunnison River and about 2 miles round trip, but don’t let the distance fool you—the route drops nearly 1,960 feet in that single mile.

What It’s Like

This is not a trail; it’s a primitive descent on constantly shifting rock where hands-on scrambling is the norm, especially higher up. Expect full sun exposure, careful footing, and slow, deliberate movement. The canyon tightens as you approach the bottom, funneling you into one of the Black Canyon’s narrower sections—beautiful and intimidating in equal measure—with the river as your turnaround or campsite if you have an overnight permit.

Difficulty and Timing

Plan 4–6 hours round trip. Typical parties take about 1.5 hours to descend and 4.5+ hours to claw back up. It’s non-technical but extremely strenuous, and ascents feel endless on loose slopes. Only attempt if you’re confident on steep, unmarked terrain and in excellent condition.

Permits and Regulations

A wilderness use permit is required for all inner-canyon travel (day or overnight). Pets are not allowed. If you’re camping, you can stay up to three nights at river sites; bear-resistant food storage is recommended.

Best Time to Hike

• Summer: Start at first light. Inner-canyon temps run hotter than the rim, heat exhaustion is common, and there’s no water until the river. Carry at least 4 liters per person and a filter for the river.
• Winter: Snow and ice can turn Tomichi into an alpine problem. Be prepared with traction (microspikes/crampons), snowshoes, and even an ice axe as conditions dictate. Potable water is typically unavailable at the rim from October–May.

Geology and What to Notice

You’ll descend through the Black Canyon’s dark, ancient metamorphic rocks—gneiss and schist—sculpted by the Gunnison River. The close-quarters walls, the raw texture of the rock, and the river’s roar below make this an immersive geology lesson you feel in your legs.

Tips and Tricks

• Footwear and gloves: Wear stiff, grippy boots and bring gloves to protect your hands on sharp rock.
• Navigation: The route is unmarked. Study the line before you go; expect no signage.
• Water strategy: Treat the river water; don’t count on rim water in the shoulder/cold seasons.
• Pace yourself: Save gas for the ascent—it’s where most people crack.

Should You Do It?

If you want a demanding, once-and-done kind of challenge with dramatic payoff and real commitment, Tomichi delivers. If you prefer maintained tread and straightforward navigation, this won’t be fun—pick a rim trail instead.