Phleger Estate is a redwood-forest preserve at the southern end of the Golden Gate National Recreation Area, adjacent to Huddart County Park. Its trails pass through second-growth redwoods and firs, with a moderately strenuous 3.40-mile round trip on Lonely Trail; if you’re staying at an inn in San Carlos, check current access details before planning the outing.
- Setting: Southern end of the Golden Gate National Recreation Area, beside Huddart County Park.
- Featured route: Lonely Trail is a 3.40-mile round trip rated moderately strenuous.
- Access: Visitors can park near the Huddart County Park lot on the southern side and enter the estate.
- Hours: Open 24/7; confirm current access and trail notices before visiting.

Where Phleger Estate is
Phleger Estate sits at the southern end of the Golden Gate National Recreation Area and shares an edge with Huddart County Park. That connection gives you a useful geographic reference when planning how to reach the preserve and where to look for access information.
The estate has a history tied to its country house above West Union Creek. Herman and Mary Elena Phleger bought the house in 1931. The Golden Gate National Parks Conservancy says Mary Phleger sold the estate to the Peninsula Open Space Trust in 1994; an NPS planning document says the Trust purchased it in early 1995.

Trail character and route planning
Phleger Estate’s trails pass through second-growth redwoods and firs, with traces of the area’s former logging industry still visible in century-old redwood stumps and steam-mill remnants.
The Golden Gate National Parks Conservancy describes Lonely Trail as a 3.40-mile round trip of moderately strenuous difficulty. Use that description to decide whether the route suits your plans, and check current trail access before setting out.
Steam-mill remnants and old stumps add historical context to the forest landscape. The Phleger family’s country house above West Union Creek also connects the estate’s present-day trails to its past as a privately owned property.

Access, parking and preserve rules
You can park near the Huddart County Park lot on the southern side and enter Phleger Estate. Because access details and trail notices can change, confirm the current entry information before you leave.
Keep your plans within the preserve’s current permitted routes and follow posted instructions. The estate’s access and trail information should guide your choice of entrance and route.

What to check before your hike
Phleger Estate is open 24/7, but current access and trail notices are worth checking before your hike. Check the official site before you go, especially for updates that affect entry or trail availability.
For a simple plan, confirm the entry point first, then choose a route that fits your ability. Lonely Trail’s round-trip length and moderate-strenuous rating provide a concrete starting point for that decision.
San Carlos Inn is about a 10-minute drive from Pulgas Ridge Open Space Preserve, another preserve outing from San Carlos.
FAQs
How long is Lonely Trail at Phleger Estate?
Lonely Trail is a 3.40-mile round trip and rated moderately strenuous.
Where can you park for Phleger Estate?
Visitors can park near the Huddart County Park lot on the southern side and enter the estate.
What kind of forest is at Phleger Estate?
The trails pass through second-growth redwoods and firs, with old redwood stumps and steam-mill remnants visible along the way.
Is Phleger Estate open all day?
It is open 24/7. Confirm current access and trail notices before visiting.
