Trail Conditions

• No reported trail closures.

• No reported trail closures.

• No reported trail closures.

• Methuselah Trail is CLOSED to equestrians from Giant Salamander Trail to South Leaf Trail due to trail damage.

• Beginning on Tuesday, September 2 the Aquinas, Serenity and Loma Vista Trails will be CLOSED until September 30. Crews will be replacing a culvert along the Aquinas Trail and will need to close the trail to keep visitors safe. Upsizing the culvert will enhance the longevity of the trail while protecting downstream water quality by preventing road washouts and chronic erosion.

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• No reported trail closures.

• Prospect Road Trail is CLOSED WEEKDAYS ONLY while construction crews replace a culvert below the road. The closure is expected to last through October 31, 2025. The culvert was severely damaged during the 2022-2023 winter storms and its replacement is essential to maintain the integrity of the road and protect the health of Prospect Creek. Please use the Cora Older Trail as a detour while construction occurs. Learn more about the project at openspace.org/FO-culvert.

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The following trails may be closed to bicycle and equestrian use during wet conditions.

• ​​​​​Wedding Trail is OPEN to bicyclists and equestrians.
• Upper Toyon Trail is OPEN to bicyclists and equestrians.

• Grasshopper Loop Trail is seasonally closed to dogs August 1 through December 15 during cattle calving season. The trail remains open year-round for hiking. 

The following trails may be closed to equestrian use during wet conditions.

• Folger Ranch Loop Trail is OPEN to hikers and equestrians.
• Grasshopper Loop Trail is OPEN to equestrians.

The following trails may be closed to bicycle and equestrian use during wet conditions.

• Chestnut Trail is OPEN to bicyclists and equestrians.
• Long Ridge Trail is OPEN to bicyclists and equestrians.
• Peters Creek Trail is OPEN to bicyclists and equestrians.

• No reported trail closures.

• This preserve is closed to the public.

• Portions of Montebello Road will be CLOSED on weekdays from Tuesday, September 2 (9/2) through the end of December for an Electrical and Fiber Communication Line Undergrounding project led by the City of Palo Alto Utilities Department. This work is part of an effort to reduce the risk of wildfire ignitions and enhance visitor experience in the preserve. Learn more about the project here.
  • While work is ongoing, please use alternative routes shown in the map below. Download and print the map here. 

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The following trails may be closed to bicycle and equestrian use during wet conditions.

• Skid Road Trail is OPEN to bicyclists and equestrians.
• Stevens Creek Nature Trail is OPEN to bicyclists and equestrians between Skid Road and Canyon Trail.
• White Oak Trail is OPEN to bicyclists and equestrians connecting to Skid Road Trail.

• No reported trail closures.

• No reported trail closures.

The following trails may be closed to bicycle and equestrian use during wet conditions.

• Whittemore Gulch Trail is OPEN to bicyclists and equestrians.

Rancho San Antonio PG&E Construction Notice

Starting July 28 through mid-October, a PG&E maintenance project will cause intermittent delays on select roads and trails throughout Rancho San Antonio County Park and Open Space Preserve. Visitors may encounter construction activity and traffic control on:

• Rancho San Antonio Drive
• Parking Lot 6 and nearby restrooms
• Rancho San Antonio Bike Path
• Portions of Hammond Snyder Trail

For more information on this project, please contact PG&E Outreach Specialist Dominay Love at dominay.love@pge.com or (925) 412-8981. 

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The following trail may be closed to equestrian use during wet conditions.

• ​​​​​Quarry Trail is OPEN to equestrians.

• No reported trail closures.

• No reported trail closures.

• No reported trail closures.

• No reported trail closures.

• No reported trail closures.

• No reported trail closures.

• No reported trail closures.

• No reported trail closures.

• Bridle Trail advisory: Crossing Dennis Martin Creek is not advised during high water events.
• Schilling Lake Trail advisory: Equestrians, use caution between the Thornewood parking area and Bridle Trail due to a section of uneven terrain

• This preserve is closed to the public.

The following trails may be closed to equestrian use during wet conditions.

• Betsy Crowder Trail is OPEN to equestrians.
• Hamms Gulch Trail is OPEN to equestrians.
• Lost Trail is OPEN to equestrians.
• Razorback Ridge Trail is OPEN to equestrians.