Eagle Mosquito Lakes - 10mi Moderate Hike

A large lake surrounded by forest covered granite walls.

This remote alpine route climbs 3,000 feet over 10 miles to glacial lakes set in Mineral King's high basin. Moderately strenuous with relentless switchbacks, extreme elevation change, and high-altitude exposure. Eagle and Mosquito Lakes reward the effort with turquoise waters and granite peaks, but only the fit and prepared should attempt this day or overnight push.

Quick facts

Distance Miles: 10
Route Type: Out and back (splits at Eagle Basin; Eagle Lake 3.4mi one way, Mosquito Lake 3.6mi one way from junction)
Difficulty Level: Moderately strenuous
Elevation Gain Feet: 3000

Trail profile

Distance Miles: 10
Route Type: Out and back (splits at Eagle Basin; Eagle Lake 3.4mi one way, Mosquito Lake 3.6mi one way from junction)
Difficulty Level: Moderately strenuous
Elevation Gain Feet: 3000
Estimated Time: 7-9 hours (day hike) or overnight with camping at Mosquito Lake campsites
Trail Surface: Unpaved with multiple switchbacks and staircases. Extreme elevation change throughout.
Trail Features: Alpine glacial lakes
Granite peaks
High-elevation mountain views
Turquoise lake waters
Mineral King alpine landscape
Trail Highlights: Two pristine alpine lakes (Eagle and Mosquito) set in a high-elevation granite cirque with 360-degree mountain views

Trailhead & access

Trailhead Location: End of Mineral King Road at Disney parking Lot, 1 mile from Mineral King Ranger Station
Parking Lot Size: Small and unpaved, potentially rocky
Parking Fill Time: Full by mid-morning on summer weekends
Shuttle Required: 0
Shuttle Details: No shuttle. Road access only.

Permits & conditions

Permits Required: Yes
Permit Details: Wilderness permit required for overnight camping. Reserve in advance via NPS.gov. Day hiking requires no permit.
Fees: $35 (Private Vehicle entrance fee, valid 1-7 days, Sequoia & Kings Canyon National Parks)
Trail Status: Typically open July through September when Mineral King Road is accessible
Seasonal Closures: Mineral King Road closes mid-November through late spring due to snow. Trail access is road-dependent.

Facilities & rules

Restrooms At Trailhead: 0
Water Sources: Carry all water from trailhead (2-3L minimum). Lakes and streams present but purity not guaranteed—filtering required if refilling.
Accessibility: Not wheelchair accessible. Unpaved trail with extreme elevation change, multiple switchbacks and staircases.

Safety & strategy

Hazards: Extreme elevation change with steep switchbacks
High altitude (7,500+ feet) causing exertion
Mosquitoes (severe June-July)
Afternoon thunderstorms common
Marmots aggressive around vehicles
Limited cell service in alpine terrain
Exposure to sun and weather
Hazard Details: Switchback grind is relentless with zero forgiveness. High altitude means heavy legs and rapid fatigue. Early summer brings mosquito swarms that can destroy your experience. Afternoon thunderstorms are common and dangerous in exposed terrain. Marmots will damage vehicles if left unprotected. Cell service is none to very weak for emergency calls.
Cell Service: None or very weak in alpine terrain
Crowd Level: Moderate to heavy on summer weekends
Peak Crowd Times: July-August weekends and holiday weeks
Best Season: July through September
Best Time To Visit: July to September. Mineral King Road reopens in late spring; arrive by 6:00 AM to beat crowds and afternoon thunderstorms.
Tips Advice: Carry 2-3L water minimum—trail is dry; lake water requires filtering
Start before 6:00 AM to beat crowds and afternoon storm risk
Trekking poles are non-negotiable for descent on your knees
Protect your vehicle from marmots; check for damage before leaving trailhead
Make noise at trail intersections; black bears are active in Mineral King

More details

Park Area: Mineral King
Trail Markers: Well-marked trail with clear signs. Route splits clearly at Eagle Basin after approximately 4 miles.
Dogs Allowed: No
Biking Allowed: No
Shade Level: Minimal. First 4 miles are sun-exposed switchbacks. Alpine terrain above has scattered trees and limited shelter from sun or storms.
Emergency Contacts: Call 911 in emergency (may not reach from high alpine). Nearest ranger: Mineral King Ranger Station. Nearest hospital: Visalia area (45+ miles downslope).
Map Recommended: 1
Snow Dates: November through May (Mineral King Road closed due to snow)
Mud Season: Late spring (April-May) as snowmelt runs
Bug Season: June and July peak mosquito season. Tapers significantly by mid-August.
Insider Tips: Trail forks at Eagle Basin around 4 miles: Eagle Lake continues left 3.4 more miles; Mosquito Lake continues right 3.6 miles
Mosquito Lake #1 is shallower and closer to parking; Eagle Lake sits higher with superior basin views
First legal campsite is 6 miles in at Mosquito Lake #2
Descent punishes knees harder than ascent—poles matter
Start early enough to finish before afternoon lightning risk spikes
Marmot damage to parked vehicles is documented—many hikers report dents and chewed trim
Recent Updates: Mineral King Road seasonal closure status is current as of 2026. Trail itself is stable and well-maintained.
Family Friendly Notes: Not suitable for young children. Requires strong fitness and altitude tolerance. Kids 10+ with excellent fitness may manage with adult support. Mosquitoes and steep terrain with exposure demand constant supervision and experienced judgment.
Nearby Facilities: Minimal services at Mineral King (1 mile from trailhead). Stock all supplies in lower elevations before entering Mineral King area.
Review Summary: Hikers report the elevation gain is relentless but rewarded by pristine alpine lakes and unobstructed mountain views. Early-summer mosquitoes and high altitude filter out casual hikers. Those with strong fitness and proper gear report transformative summit moments and unforgettable alpine solitude.