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Oak Grove Loop
Map or Oak Grove and Grand Avenue Park Loops
Trail Description

The Oak Grove Loop begins off of the Grand Avenue Trail after walking through the tunnel and up the hill. The trail consists of moderate terrain with easy changes in elevation and is well shaded. The loop travels the hillside valley behind the Diamond Valley Estates community. Hikers will enjoy peaceful scenery, Oak Grove trees, and partial views of the Chino Valley. The loop ends at the start from the Grand Avenue Trail.

Trail Elevation Chart
Oak Grove Loop Trail Elevation Chart

Other Trails Accessed

Grand Avenue Park Loop 
Distance:  .40 miles
Difficulty:  Easy 
Cumulative Elevation Gain:  26 ft.

Grand Avenue Trail
Distance:  3.20 miles
Difficulty:  Moderate Strenuous
Cumulative Elevation Gain:  710 ft.

Photo of Oak Grove Loop Trail 
Trail Rating Icons
Dogs must be on a leash.

.75 Miles            

Difficulty Rating

Trail Difficulty Definitions

Cumulative Elevation Gain
115 ft.

Main Access Point
Grand Avenue Park Trailhead
Grand Avenue Park
1301 Grand Avenue
*Near gazebos.

Secondary Access Point
Pleasant Hill Dr. in Diamond Valley Estates (No parking) 

Time Estimate
30 minutes for a beginner hiker

Trail Hours
May-September, 7 am to 9 pm October-April, 7 am – 7 pm