TrailAvalanche Peak Trailhead 5N2
4.5-mile out-and-back; 2,100 ft gain. Relentless climb with a true summit payoff.

The 70-foot Mystic Falls is your objective on this 2.4-mile out-and-back through mixed conifer forest. Moderately strenuous with creek crossings; hydrothermal features nearby demand strict trail discipline. Most hikers complete it in 2-4 hours; the optional switchback loop adds 1.5 miles of elevation-gain punishment and an Upper Geyser Basin overlook.
Moderately strenuous
The 70-foot Mystic Falls is the anchor—a classic cascade in a geothermal landscape. Optional switchback loop climbs 500 feet to a panoramic Upper Geyser Basin overlook spanning the entire geyser field.
• The false trailhead at the Biscuit Basin boardwalk overlook is not the real start—walk the full 0.3 miles to the far side • Most hikers turn around at the falls; the switchback loop is a serious lung-buster • Visit early morning to avoid thermal steam obscuring views and escaping the conga line • The creek crossing near the falls is slippery in summer—water shoes or extreme caution mandatory
Late spring through fall (May-October). Summer (June-August) is prime. Winter access possible but roads may be closed.
The moderate difficulty and creek crossings challenge young children. Hand-holding mandatory near the falls and switchback overlook due to exposure. Older kids (10+) with hiking experience can manage it; make clear the thermal-hazard rules and enforce strictly.
Hikers consistently report the 70-foot falls deliver the promised payoff. Access is straightforward but hydrothermal hazards and creek exposure demand respect. Most fit hikers complete the base route in 2-3 hours.
No permits required for day hiking.
No shuttle required. Park at Biscuit Basin lot or in pullouts on either side of the road. Short walk to trailhead from either location.
The Upper Geyser Basin contains boiling springs and thermal features. Stay on the trail at all times—off-trail exploration can be fatal. Creek crossings are passable but slippery. Weather can shift rapidly; hypothermia is a real risk if you fall in and get wet.
The moderate difficulty and creek crossings challenge young children. Hand-holding mandatory near the falls and switchback overlook due to exposure. Older kids (10+) with hiking experience can manage it; make clear the thermal-hazard rules and enforce strictly.
Biscuit Basin visitor area nearby. Midway Geyser Basin (6 miles south) has lodging and services.
Hikers consistently report the 70-foot falls deliver the promised payoff. Access is straightforward but hydrothermal hazards and creek exposure demand respect. Most fit hikers complete the base route in 2-3 hours.
" Hikers consistently report the 70-foot falls deliver the promised payoff. Access is straightforward but hydrothermal hazards and creek exposure demand respect. Most fit hikers complete the base route in 2-3 hours."
Yes. Make noise constantly—talk, clap, carry bear spray. This is active wildlife zone. Alone or small group, you're prey-sized. Never run.
Steady climb, nothing technical. If you're breathless after a half-mile, slow down and hydrate. The switchback loop is where fitness matters.
Yes. Tell someone your plan. Carry your phone (even if no signal) and bear spray. The trail is well-traveled. Thermal hazards are the real danger, not isolation.
Not if you're careful. Shallow and manageable, but slippery rocks in summer. Wear water shoes or cross carefully. One slip means a cold soak.
Don't force it. The waterfall at 1.2 miles is the payoff. Retreat with dignity, hydrate, and come back when you're stronger. Pride dies on the descent; hypothermia kills.
Smart move. The descent hammers your knees, especially if you do the full loop. Poles help with creek crossings too. Carry them.
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