Cucamonga-Guasti Regional Park
Managed by San Bernardino County Regional Parks
66 acres0.7 mi of trail
Dog rules not recorded
Directionsto the parking lotWebsite ↗
Photo: Originally uploaded by Rockero (Transferred by JaumeBG) · Public domainC+Outdoors
Outdoors in Ontario
Ontario has 15 miles of mapped trails, 0.3 for every square mile of land
The biggest trail networks: Cucamonga-Guasti Regional Park (0.7 mi), Ontario Soccer Park (0.6 mi), De Anza Park (0.6 mi). 86% of residents live within a half mile of a park. 549 acres are parks and preserves, 3.0 per 1,000 residents.
Ahead of 37% of U.S. towns · #640 of 847 in California. What drives it
Conserved land
1%
324 acres · of 50.0 sq mi of land
Trails
15 mi
0.3 per sq mi of land
Park land
549 ac
3.0 acres per 1,000 residents
Near a park
86%
of residents within ½ mile
Bike routes
15 mi
12 mi lanes · 2.4 mi paths
Lakes & rivers
6
What kind of outdoors town is Ontario?
Read from the map. The page puts what stands out first.
Outdoors grade
How much outdoors does Ontario have?
On conserved land, trails, park land and how close residents live to a park, Ontario is ahead of 37% of U.S. towns, #640 of 847 in California. The share of residents near a park holds the grade up; park acres per resident pull it down.
C+
OutdoorsA character grade: shown, never part of Ontario’s overall grade.
Conserved land1% of the land · typical CA town 4% · U.S. 4%CTrails0.3 miles of mapped trail per square mile of land (15 mi) · CA 0.9 · U.S. 0.4B−Park land3.0 acres of park per 1,000 residents (549 acres) · CA 5 · U.S. 13C−Parks close to home86% of residents within a half mile of a park · CA 91% · U.S. 72%B+
All U.S. towns we grade (21,298)Ahead of 37%
LessMore
California towns of 2,500+ (847)Ahead of 24%
Among the 400 U.S. cities of 100,000 or more, Ontario ranks #384 on Outdoors.
Park acres per resident are where Ontario trails most U.S. towns: 3.0 per 1,000 against 12.6 typical, since 187,013 people share 549 acres.
How sure. Graded on any three of the four inputs instead, the letter would range from C to B−. Trails and many small parks come from OpenStreetMap, mapped by volunteers, so coverage varies from town to town; the half mile is a straight line from each census block, so a river or highway in the way isn’t counted against it.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
The map
Conserved land, trails & bike routes
Tap a number to zoom to a park. Tap a layer to hide it.
Easements protect land from building but are usually private.© OpenStreetMap contributors · USGS PAD-US
Places to walk
Pick a walk
The longest trail network is Cucamonga-Guasti Regional Park, with 0.7 miles. Directions go to the nearest trailhead or public parking.
Euclid Avenue Historic Park
Park
4 acres0.4 mi of trail
Dog rules not recorded
Directionsto the parking lot
Civic Center Community Conservation Park
Managed by City of Ontario
1 acres0.3 mi of trail
Dog rules not recorded
Directionsto the parking lot
All 34 parks & preserves
Cucamonga-Guasti Regional Park66 acres · 0.7 mi of trail · San Bernardino County Regional Parks
DirectionsOntario Soccer Park23 acres · 0.6 mi of trail
DirectionsDe Anza Park19 acres · 0.6 mi of trail
DirectionsEuclid Avenue Historic Park4 acres · 0.4 mi of trail
DirectionsJohn Galvin Park37 acres · 0.3 mi of trail
DirectionsVineyard Park9 acres · 0.3 mi of trail
DirectionsCivic Center Community Conservation Park1 acres · 0.3 mi of trail · City of Ontario
DirectionsVeterans Memorial Park9 acres · 0.2 mi of trail
Celebration Park South5 acres · 0.2 mi of trail
James Galanis Park5 acres · 0.2 mi of trail · City of Ontario
Del Rancho Park4 acres · 0.2 mi of trail
DirectionsThorn Park3 acres · 0.2 mi of trail
Ontario Town Square2 acres · 0.2 mi of trail · City of Ontario
DirectionsWestwind Park26 acres · 0.1 mi of trail
DirectionsAnthony Muñoz Hall of Fame Park17 acres · 0.1 mi of trail
DirectionsBrookfield Recreation Center6 acres · 0.1 mi of trail
Memorial Grove Park6 acres · 0.1 mi of trail
DirectionsCypress Park5 acres · 0.1 mi of trail
DirectionsOntario Grand Park137 acres · City of Ontario
Homer F. Briggs Park15 acres
DirectionsBon View Park12 acres
DirectionsKimball Community Park8 acres · Chino Valley Unified School District
DirectionsOntario Motor Speedway Park7 acres
DirectionsCreekside Park7 acres
DirectionsCarpenter's Union Park6 acres
DirectionsCelebration Park North5 acres
James R Bryant Park4 acres · Ontario-Montclair School District
DirectionsSouth Bon View Park4 acres
DirectionsCentennial Park4 acres
George Gibbs Park3 acres
DirectionsRanch Park2 acres
MacArthur Park2 acres
DirectionsSam Alba Memorial Park2 acres
Pinheiro Park1 acres
Who protects it
324 conserved acres
1% of Ontario’s land. Who manages Ontario’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Town or city236 ac
County74 ac
Land trusts & nonprofits14 ac
Local Park · 266 acLocal Recreation Area · 44 acUnknown Easement · 14 ac
Good to know
Conserved doesn’t always mean open to visitors. 14 acres are conservation easements, usually private land. The walks above are places people visit.
The biggest protected parcels
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Cucamonga-Guasti Regional Park Local Park | County | 74 | Open |
| John Galvin Park Local Park | Town or city | 39 | Open |
| Westwind Park Local Park | Town or city | 26 | Open |
| De Anza Park Local Park | Town or city | 21 | Open |
| Anthony Munoz Park Local Park | Town or city | 18 | Open |
| Euclid Avenue Parkway Local Recreation Area | Town or city | 16 | Open |
| Creekside Park and Golf Course Local Recreation Area | Town or city | 15 | Restricted |
| Homer F. Briggs Park Local Park | Town or city | 15 | Open |
| Bon View Park Local Park | Town or city | 12 | Open |
| Vineyard Neighborhood Park Local Park | Town or city | 9 | Open |
5 smaller protected places aren’t shown.
Things to do
54 places to go in Ontario
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Public pools in Ontario
Ontario High Swimming Pool
DirectionsPlus 1 public pool without a name on the map. Tap “Show all on map” to see it.
Playgrounds in Ontario
Interpretive PlaygroundIn Civic Center Community Conservation Park
DirectionsMcDonald's PlayPlace
DirectionsTot LotIn Ranch Park
Directions45 playgrounds are on OpenStreetMap in all; the list shows named ones from the first 30.
Dog parks in Ontario
James R Bryant Dog ParkIn James R Bryant Park
DirectionsSchimmel Dog ParkIn John Galvin Park
DirectionsPlus 1 dog park without a name on the map.
Picnic areas in Ontario
4 picnic areas without a name on the map. Tap “Show all on map” to see them.
Trails & water
2 named trails and 6 lakes & rivers
Named trails
Open to bikes · 1.9 miUnpaved · 3.5 mi
West Cucamonga Creek Trail1.4 mi
Ontario Public Trail0.2 mi
Lakes & rivers tap for directions
Biking & sports
15 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
12 mi
painted or protected bike lanes
2.4 mi
off-road bike paths
0.1 mi
shoulders & shared lanes
Courts & fields
54Basketball
48Tennis
23Baseball
21Soccer
7Pickleball
7Softball
5Volleyball
3Football
Includes school and college facilities, which aren’t always open to the public.
History along the way
History →5 places on the National Register
The country’s official list of places worth saving (National Park Service).
When to get out
The best walking months in Ontario: April to June
NOAA’s 1991–2020 normals for the town and the daylight at its latitude. Outlined months have long days, highs of 59 to 86 °F and little rain for the place.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.1 | 10.9 | 11.9 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.3 | 11.3 | 10.3 | 9.9 |
| High (°F) | 69 | 69 | 72 | 76 | 79 | 86 | 92 | 94 | 91 | 83 | 75 | 68 |
| Rain (in) | 2.9 | 3.3 | 1.9 | 0.8 | 0.3 | 0.0 | 0.0 | 0.0 | 0.1 | 0.5 | 0.9 | 2.0 |
July is the driest month (under 0.1 in) and August the warmest (highs of 94 °F). 3.3 inches fall in February, the wettest month. Summer highs reach 94 °F, too hot for the outline. The climate in Ontario →
Next door
Ontario and its neighbors
Tap a town to see its outdoors.
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Ontario | 1% | 0.3 | 3 | 86% | C+ |
| Chino | 12% | 0.8 | 14 | 92% | A− |
| Eastvale | 15% | 0.6 | 10 | 99% | A− |
| Rancho Cucamonga | 4% | 2.7 | 7 | 79% | B+ |
| Upland | 2% | 0.4 | 2 | 89% | C+ |
| Fontana | 4% | 0.8 | 6 | 88% | B+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Ontario
Where can I hike in Ontario?
The longest trail networks: Cucamonga-Guasti Regional Park, 0.7 miles; Ontario Soccer Park, 0.6 miles; De Anza Park, 0.6 miles; Euclid Avenue Historic Park, 0.4 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
How much of Ontario is conserved land?
1% of its land, against a typical 4% for a California town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
Are dogs allowed on Ontario’s trails?
Cucamonga-Guasti Regional Park and Ontario Soccer Park don’t have dog rules recorded on the map; check the signs at the trailhead.
Where can I bike in Ontario?
15 miles of bike routes are on the map: 12 of painted or protected lanes, 2.4 of off-road paths and 0.1 of shoulders and shared lanes.
Is there public land near Ontario?
48,580 acres of parks and open public land lie inside Ontario or within 10 miles of it (PAD-US), 549 of them inside the city line.
How much outdoors does Ontario have?
Ahead of 37% of U.S. towns on the Outdoors grade, #640 of 847 in California. The grade combines the share of land that is conserved, miles of mapped trail per square mile of land, park acres per 1,000 residents and the share of residents within a half mile of a park. It’s a character grade, so it isn’t part of the overall grade. How it works.
Trail talk
Conditions, parking and favorite walks from Ontario neighbors.
Share a tip
Sources
Where this page comes from
Conserved and public land: USGS Protected Areas Database of the United States (PAD-US), service updated July 2026. Parks, trails, playgrounds, beaches and other places: OpenStreetMap (© OpenStreetMap contributors, ODbL), map data as of 2026-10-28. Land and water area: Census 2025 Gazetteer. Residents near a park: 2020 Census blocks. National Register: National Park Service. How TownRatings grades the outdoors →