Henry Coe State Park
Northern California’s Largest State Park: 87,000 Acres of Untamed Wilderness
Henry W. Coe State Park is a behemoth — at 87,000 acres, it’s the largest state park in Northern California and one of the biggest in the entire state. Located in the rugged Diablo Range east of Morgan Hill, this park is a paradise for experienced hikers and backpackers seeking genuine solitude. With 250+ miles of trails and fire roads, elevations ranging from 710 to 3,560 feet, and vast backcountry where you may not see another person all day, Henry Coe is the antidote to crowded state parks. If you’re ready to earn your views, this is your park.
Backpacking: The Heart of Henry Coe
Henry Coe was made for backpacking. The park’s enormous size, rugged terrain, and remote interior make it one of California’s premier backcountry destinations.
Backpacking Essentials
| Detail | Info |
|---|---|
| Backcountry Permit | $5/person/night — first-come, first-served at trailheads |
| Parking Fee | $8/night at Coe Ranch, $6/night at Hunting Hollow |
| Quotas | No quotas at Hunting Hollow entrance |
| Fires | Ground fires prohibited — gas stoves only |
| Dogs | Not allowed in backcountry |
⚠️ 2026 Update: The Dowdy Ranch Entrance was closed for the 2025 season and is expected to reopen in spring 2026. New California State Parks reservation policies take effect for arrivals on or after July 1, 2026.
Hiking: 250+ Miles of Trail
The trail system ranges from gentle fire roads to punishing single-track through steep canyons and over exposed ridges. Expect significant elevation gain and loss on nearly every route.
Access Points
| Entrance | Elevation | Character | Best For |
|---|---|---|---|
| Coe Ranch (main) | ~2,600 ft | Ridge-top start, visitor center | Day hikes, car camping, orientation |
| Hunting Hollow | ~900 ft | Valley floor, steep climbs out | Backpacking, creek access |
| Dowdy Ranch | ~1,500 ft | Eastern access | Remote interior (⚠️ check 2026 reopening) |
Recommended Routes
| Route | Distance | Difficulty | Highlights |
|---|---|---|---|
| Frog Lake Loop (from Coe Ranch) | 8 miles RT | Moderate | Oak woodlands, seasonal pond, wildflowers |
| China Hole (from Hunting Hollow) | 10 miles RT | Strenuous | Swimming hole, canyon scenery |
| Coit Lake Loop | 14 miles | Strenuous | Remote lake, panoramic ridge views |
| Mississippi Lake (backpack) | 20+ miles RT | Very Strenuous | Deep interior, total solitude |
Car Camping and Group Sites
For those not ready for backcountry, the Coe Ranch Campground offers drive-in sites near the park headquarters. Hike-in group campsites like Manzanita Point and Poverty Flat (2–5 miles from trailheads) can be reserved through ReserveCalifornia for groups of 9–50.
Seasonal Guide
| Season | Conditions | Best For |
|---|---|---|
| Spring (March–May) | Green hills, wildflowers, flowing creeks | ⭐ Best season — ideal temps, water available |
| Summer (June–Sept) | Hot (often 90°F+), dry, limited water | Experienced backpackers only |
| Fall (Oct–Nov) | Cooling temps, golden grass | Comfortable hiking, fewer crowds |
| Winter (Dec–Feb) | Cold, wet, occasional snow at elevation | Solitude seekers |
Visitor Information
Getting There
The main Coe Ranch entrance is at 9000 East Dunne Avenue, Morgan Hill, CA 95037, via a winding mountain road east of Highway 101. The Hunting Hollow entrance is accessed from Gilroy via Leavesley Road.
Fees
Day-use parking: $8 (Coe Ranch), $6 (Hunting Hollow). Backcountry permit: $5/person/night.
Best Time to Visit
Spring (March–May) is by far the best. Green rolling hills, wildflower displays, and flowing creeks make the park magical. Avoid summer unless you’re heat-adapted and experienced with backcountry water management.
Frequently Asked Questions
Is Henry Coe State Park good for beginners?
Henry Coe is generally not recommended for beginners. The terrain is extremely rugged with significant elevation gains, water can be scarce in summer, and the park’s vastness means rescue is far away. Start with a short day hike from the Coe Ranch entrance to get a feel for the terrain before attempting backcountry trips.
Is there water in the backcountry?
Water availability varies dramatically by season. In spring, creeks flow freely. By mid-summer, most water sources dry up, and you must carry all water needed (often 1 gallon+ per person per day). Always treat backcountry water. Check current conditions with the park before any trip.
Will the Dowdy Ranch entrance reopen in 2026?
The Dowdy Ranch entrance was closed for the 2025 season and is expected to reopen in spring 2026. Check the California State Parks website for the latest status before planning a trip via this entrance. Also note that new reservation policies take effect for arrivals on or after July 1, 2026.
