1
Sycamore Canyon Park
Park
48 acres0.8 mi of trail
Dog rules not recorded
Outdoors · Diamond Bar
Diamond Bar, CA parks, trails & bike paths
About 4.3% of Diamond Bar is conserved land, roughly 403 acres. There are about 7.0 miles of mapped trails, and the biggest networks are in Sycamore Canyon Park (0.8 mi) and Diamond Canyon Park (0.7 mi).
Conserved land, trails, parks and bike routes in Diamond Bar, measured from OpenStreetMap and USGS data.
At a glance
Diamond Bar outdoors
Conserved land
4.3%
403 of 9,487 acres
Trails
7.0 mi
0.5 mi per sq mi · 4 on conserved land
Parks & preserves
12
8 conserved acres per 1,000 residents
Bike routes
22.0 mi
22.0 mi lanes · 0.0 mi off-road paths
Conserved land is a share of the whole town area. Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Map
Conserved land, trails & bike routes
Tap a number or a place below to zoom in© OpenStreetMap contributors · USGS PAD-US
Places to walk
Parks & preserves with trails
Ranked by mapped trail miles. Directions go to the nearest marked trailhead or public parking.
2
Diamond Canyon Park
Park
4 acres0.7 mi of trail
Dog rules not recorded
DirectionsTo the parking lot
3
Tres Hermanos Ranch
Managed by Tres Hermanos Conservation Authority
594 acres0.2 mi of trail
Dog rules not recorded
4
Summitridge Park
Park
19 acres0.2 mi of trail
Diamond Bar Loop
Dog rules not recorded
DirectionsTo the parking lot
All 12 parks & preserves
Showing 1–10 of 12 parks & preserves
Sycamore Canyon Park48 acres · 0.8 mi of trail
Diamond Canyon Park4 acres · 0.7 mi of trail
Tres Hermanos Ranch594 acres · 0.2 mi of trail · Tres Hermanos Conservation Authority
Summitridge Park19 acres · 0.2 mi of trail
Ronald Reagan Park6 acres · 0.2 mi of trail
Summitridge Longview drive Park1 acres · 0.2 mi of trail
Maple Hill Park6 acres · 0.1 mi of trail
Pantera Park15 acres
Carlton J. Peterson Park8 acres
Paul C. Grow Park4 acres
Who protects the land
403 conserved acres
Who manages it, from PAD-US. Approximate, because parcels can overlap.
Biking & sports
Bike routes, courts & fields
- Painted or protected bike lanes22.0 mi
- Off-road bike paths0.0 mi
- Shoulders & shared lanes0.1 mi
Courts & fields
- Tennis106
- Basketball36
- Baseball22
- Volleyball11
- Pickleball5
- Football2
- Soccer2
Counts include school and college facilities, which aren't always open to the public.
Nearby
Diamond Bar and its neighbors
Towns whose outdoors data has been built so far.
| Town | Conserved | Trails | Parks & preserves |
|---|---|---|---|
| Diamond Bar | 4.3% | 7.0 mi | 12 |
| Industry | 5.2% | 7.7 mi | 1 |
| Pomona | 2.8% | 5.8 mi | 26 |
| Rowland Heights | 5.8% | 14.2 mi | 7 |
| Chino Hills | 39.4% | 130.4 mi | 44 |
Trail talk
Conditions & tips from neighbors
No recent posts about Diamond Bar's trails yet. Muddy, icy, a bridge out, where to park: a quick post helps the next person.
Sources: trails, parks, preserves, courts and bike lanes © OpenStreetMap contributors (ODbL), map data as of 2026-09-28. Conserved land: USGS Gap Analysis Project, Protected Areas Database of the United States (PAD-US). Measured against the Census town boundary.
How we measure
"Trails" are OpenStreetMap paths, bridleways, public tracks and unpaved footways, plus footways inside a park or preserve or on a named trail route. Sidewalks are left out. Areas are counted on a 20-meter grid, so overlapping parcels count once. "Conserved" includes conservation easements, which protect land from development but are usually private property. Trailheads are the nearest marked trailhead, public parking lot or information board within about 150 meters of a preserve. Dog rules come from OpenStreetMap when someone has tagged them; otherwise we show what's typical for the land manager, or say the rules aren't recorded.