
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

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.
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Dogs must be on a leash.
Distance
.75 Miles
Difficulty Rating
Easy
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
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