Mineral King Road — Three Rivers to Mineral King via Sequoia Backcountry
Marmots, switchbacks, and no guardrails.
The Mineral King Road in Sequoia National Park is the kind of road that filters out the timid before you even arrive. From Three Rivers it climbs 6,500 feet in 25 miles through the East Fork Kaweah River canyon on a ledge road so narrow that opposing traffic requires one vehicle to back up to a pullout. Marmots famously chew through vehicle wiring and radiator hoses in the parking area — so much so that rangers advise wrapping your undercarriage in chicken wire before leaving for the trail. The road is unpaved from the national park boundary inward and genuine high-clearance territory on its upper section. At the end sits Mineral King valley: a glaciated cirque ringed by 11,000-foot peaks and carpeted with wildflowers in July.
A stock 4WD or high-clearance SUV handles the road comfortably in dry season; it is absolutely not suitable for trailers, motorhomes, or low-clearance vehicles. Plan for 1.5 to 2 hours each way — the road is slow by design. The road is typically open late May through late October, snow-dependent. The national park entrance fee applies (no additional permit for the road itself). Camping at Cold Springs or Atwell Mill campgrounds requires advance reservation through Recreation.gov. There is no fuel or cell service past Three Rivers. Worth every grinding switchback.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Backcountry, High Clearance, Scenic Drive |
| Surface | Dirt, Gravel, Mixed |
| Features | Camping, High Altitude, Historic, Remote, Scenic |
| Length (miles) | 25 mi / 40.2 km |
| Duration | 1-2 days |
| Max elevation (ft) | 7800 ft |
| Best season | June-October |
| Minimum vehicle | High-clearance SUV or 4WD (no trailers) |
| Nearest town | Three Rivers, California |
| Land manager | National Park Service — Sequoia National Park |
| Permit required | No |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | No |
| Official sources | NPS Mineral King guide Recreation.gov campground reservations |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can I drive Mineral King Road in a stock Tacoma or 4Runner?
Yes — a stock high-clearance SUV or 4WD truck handles this road fine. The challenge isn't the surface, it's the relentless narrow switchbacks and sheer drop-offs with no guardrails. Wider body vehicles (full-size trucks, large SUVs) will feel every inch of it. Trailers and RVs are prohibited.
When does Mineral King Road actually open each year?
Typically late May to early June, depending on snowpack, and closes around the end of October. Check the NPS Mineral King page directly before you go — snow can push the opening date later with zero warning, and the NPS doesn't always update in real time.
Do I need a permit or pay fees to drive in and camp at Mineral King?
Sequoia National Park entry fees apply ($35/vehicle as of 2024). Campground sites at Atwell Mill and Cold Springs require reservations through Recreation.gov during peak season. Backcountry permits are required if you're leaving the campgrounds and heading into the wilderness on foot.
What's the hardest part of the drive and what should I actually expect?
The road is rated moderate but the difficulty is psychological as much as mechanical — 698 curves in 25 miles, no guardrails on exposed canyon edges, and sections barely wide enough for two vehicles to pass. The lower portion near Three Rivers is the narrowest and most committing. Budget 1.5 to 2 hours each way; this is not a road you hurry.
Is there any cell service, and should I worry about the marmots damaging my vehicle?
There is zero cell service on Mineral King Road and inside the valley — plan accordingly with offline maps and let someone know your itinerary. The marmot issue is real: they chew through radiator hoses, wiring, and belts on parked vehicles (they're attracted to engine heat and road salts). Wrap your undercarriage with chicken wire or use tarps — locals and the NPS will tell you the same thing.
Trail track
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