Hidden Valley Open Space
Nature preserve
1,595 acres13.5 mi of trail
Tassajara Ridge TrailLower Hidden Valley Ridge TrailRolling Hills TrailUpper Hidden Valley Ridge Trail+1
Dog rules not recorded
Directionsto the parking lot
Photo: FASTILY · CC BY-SA 4.0AOutdoors
Outdoors in San Ramon
San Ramon has 43 miles of mapped trails, 2.2 for every square mile of land
22% of San Ramon’s land is conserved, about 2,854 acres. 98% of residents live within a half mile of a park. The biggest trail networks: Hidden Valley Open Space (13.5 mi), San Ramon Central Park (1.3 mi), Sunrise Ridge Park (1 mi).
Ahead of 90% of U.S. towns · #179 of 847 in California. What drives it
Conserved land
22%
2,854 acres · of 20.1 sq mi of land
Trails
43 mi
2.2 per sq mi of land
Park land
664 ac
7.7 acres per 1,000 residents
Near a park
98%
of residents within ½ mile
Bike routes
72 mi
62 mi lanes · 9.0 mi paths
Highest peak
860 ft
Dougherty Hills
Lakes & rivers
2
2 boat launches
What kind of outdoors town is San Ramon?
Read from the map. The page puts what stands out first.
Outdoors grade
How much outdoors does San Ramon have?
On conserved land, trails, park land and how close residents live to a park, San Ramon is ahead of 90% of U.S. towns, #179 of 847 in California. Trail miles hold the grade up; park acres per resident pull it down.
A
OutdoorsA character grade: shown, never part of San Ramon’s overall grade.
Conserved land22% of the land · typical CA town 4% · U.S. 4%ATrails2.2 miles of mapped trail per square mile of land (43 mi) · CA 0.9 · U.S. 0.4APark land7.7 acres of park per 1,000 residents (664 acres) · CA 5 · U.S. 13C+Parks close to home98% of residents within a half mile of a park · CA 91% · U.S. 72%A−
All U.S. towns we grade (21,298)Ahead of 90%
LessMore
California towns of 2,500+ (847)Ahead of 79%
How sure. Graded on any three of the four inputs instead, the letter would range from A− to A+. 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 Hidden Valley Open Space, with 13.5 miles. Directions go to the nearest trailhead or public parking.
San Ramon Central Park
Park
27 acres1.3 mi of trail
Dog rules not recorded
Directionsto the parking lot
Senior Center Park Gardens
Managed by City of San Ramon
6 acres0.7 mi of trail
Dog rules not recorded
Directionsto the parking lot
Boone Acres Park
Park
5 acres0.5 mi of trail
Dog rules not recorded
No trailhead mapped yet
All 42 parks & preserves
Hidden Valley Open Space1,595 acres · 13.5 mi of trail
DirectionsSan Ramon Central Park27 acres · 1.3 mi of trail
DirectionsSunrise Ridge Park12 acres · 1 mi of trail
DirectionsMemorial Park11 acres · 0.8 mi of trail
DirectionsSenior Center Park Gardens6 acres · 0.7 mi of trail · City of San Ramon
DirectionsBoone Acres Park5 acres · 0.5 mi of trail
Coyote Crossing8 acres · 0.3 mi of trail
DirectionsInverness Park6 acres · 0.3 mi of trail
DirectionsOld Ranch Park6 acres · 0.3 mi of trail
DirectionsMill Creek Hollow5 acres · 0.3 mi of trail
DirectionsHidden Valley Park4 acres · 0.3 mi of trail
DirectionsRed Willow Park4 acres · 0.3 mi of trail
DirectionsBellingham Square4 acres · 0.3 mi of trail
Six Pillars Park3 acres · 0.3 mi of trail
DirectionsOld Ranch Open Space138 acres · 0.2 mi of trail · City of San Ramon
DirectionsSan Ramon Sports Park15 acres · 0.2 mi of trail
DirectionsEast Branch Park5 acres · 0.2 mi of trail
DirectionsLimerick Park3 acres · 0.2 mi of trail
Centennial Park2 acres · 0.2 mi of trail
Critter Crossroads Park9 acres · 0.1 mi of trail
DirectionsGolden View Park4 acres · 0.1 mi of trail
DirectionsArlington Park4 acres · 0.1 mi of trail
DirectionsRichard Vahey Village Green Park4 acres · 0.1 mi of trail
DirectionsMosaic Park3 acres · 0.1 mi of trail
DirectionsWindy Hill Park2 acres · 0.1 mi of trail
Country Club School Park1 acres · 0.1 mi of trail · City of San Ramon
Sherwood Park1 acres · 0.1 mi of trail
Athan Downs20 acres
DirectionsValley View Park10 acres
DirectionsMonarch Park6 acres
DirectionsCreekside Park6 acres
DirectionsBark and Ride6 acres
DirectionsCrow Canyon Gardens5 acres
Piccadilly Square Park4 acres · San Ramon Parks & Community Services
Ramona Park4 acres
Souyen Park2 acres
DirectionsHidden Crest Park2 acres · City of San Ramon
Sunny Glen Recreational Area1 acres
DirectionsCompass Point Park1 acres
Fire Truck Park1 acres
Tassajara Ridge Staging Area1 acres
DirectionsWalt Disney Park1 acres
Who protects it
2,854 conserved acres
22% of San Ramon’s land. Who manages San Ramon’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
Land trusts & nonprofits2,783 ac
Town or city676 ac
Regional agency42 ac
Unknown Easement · 1,215 acConservation Easement · 964 acLocal Park · 829 acLocal Recreation Area · 305 acLocal Conservation Area · 93 ac
Good to know
Conserved doesn’t always mean open to visitors. 1,619 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 |
|---|---|---|---|
| Gale Ranch Local Park | Land trusts & nonprofits | 512 | Open |
| Old Ranch Open Space Local Recreation Area | Town or city | 159 | Open |
| Dougherty Valley Ridge Trail Local Recreation Area | Town or city | 116 | Open |
| Old Ranch Preserve Local Conservation Area | Land trusts & nonprofits | 93 | Open |
| Calaveras Ridge Trail - land bank Local Resource Management Area | Regional agency | 42 | Restricted |
| Central Park Local Park | Town or city | 41 | Open |
| Rancho San Ramon Park Local Park | Town or city | 23 | Open |
| Athan Downs Park Local Park | Town or city | 20 | Open |
| Henry Ranch Park Local Park | Town or city | 18 | Open |
| Memorial Park Local Park | Town or city | 17 | Open |
5 smaller protected places aren’t shown.
Things to do
128 places to go in San Ramon
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Public pools in San Ramon
Plus 1 public pool without a name on the map. Tap “Show all on map” to see it.
Playgrounds in San Ramon
Aquatic Park
DirectionsThomas Ranch Tot Lot
Directions93 playgrounds are on OpenStreetMap in all; the list shows named ones from the first 30.
Dog parks in San Ramon
Del Mar Dog Park
DirectionsMemorial Park Dog RunIn Memorial Park
DirectionsMemorial Park Small Dog ParkIn Memorial Park
DirectionsTassajara Dog ParkIn Tassajara Ridge Staging Area
DirectionsPlus 2 dog parks without a name on the map. Tap “Show all on map” to see them.
Boat launches in San Ramon
2 boat launches without a name on the map.
Scenic views in San Ramon
Old Tree OverlookIn Hidden Valley Open Space
DirectionsPlus 2 scenic views without a name on the map.
Peaks in San Ramon
Dougherty Hills860 ft elevation
DirectionsPicnic areas in San Ramon
18 picnic areas without a name on the map.
Trails & water
22 named trails and 2 lakes & rivers
Named trails
Open to bikes · 16.4 miHorses · 3.3 miUnpaved · 16.9 mi
Tassajara Ridge Trail3.1 mi
Dougherty Valley Ridge Trail2.7 mi
Rolling Hills Trail1.6 mi
Lower Hidden Valley Ridge Trail1.5 mi
Monarch Loop Trail1.2 mi
Red Willow Loop Trail1.1 mi
Upper Hidden Valley Ridge Trail1.0 mi
Alamo Creek Trail0.9 mi
East Alamo Creek Trail0.7 mi
Quail Run Trail0.6 mi
12 more trails
Lawrence Connector
0.5 miWest Alamo Creek Trail
0.4 miStar Jasmine Trail
0.4 miMonarch Ridge Trail
0.3 miSycamore Grove Trail
0.3 miCoyote Creek Trail
0.3 miLive Oak Trail
0.3 miCoyote Canyon Trail
0.2 miPG&E Access
0.2 miHidden Valley Ridge Trail
0.2 miMourning Dove Trail
0.1 miHarvest Trail
0.1 miLakes & rivers tap for directions
Biking & sports
72 miles of bike routes
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
62 mi
painted or protected bike lanes
9.0 mi
off-road bike paths
1.5 mi
shoulders & shared lanes
Courts & fields
55Tennis
46Basketball
33Baseball
20Soccer
13Multi-sport
5Softball
4Tracks
2Beach volleyball
Includes school and college facilities, which aren’t always open to the public.
History along the way
History →1 place on the National Register
The country’s official list of places worth saving (National Park Service). The map also marks 2 historic points from OpenStreetMap: plaques, memorials and old buildings.
Forest Home FarmsDistrict · listed 2002
About itWhen to get out
The best walking months in San Ramon: 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) | 9.8 | 10.7 | 11.8 | 13.1 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.1 | 10.1 | 9.6 |
| High (°F) | 57 | 60 | 65 | 69 | 75 | 82 | 86 | 86 | 84 | 76 | 64 | 56 |
| Rain (in) | 4.2 | 3.8 | 3.1 | 1.4 | 0.7 | 0.1 | 0.0 | 0.0 | 0.1 | 1.0 | 2.0 | 4.1 |
July is the driest month (under 0.1 in) and the warmest (highs of 86 °F). 4.2 inches fall in January, the wettest month. Summer highs reach 86 °F, too hot for the outline. The climate in San Ramon →
Next door
San Ramon and its neighbors
San Ramon has the most mapped trails of the 4 towns around it. 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 |
|---|---|---|---|---|---|
| San Ramon | 22% | 2.2 | 8 | 98% | A |
| Norris Canyon | 24% | 0.4 | 74 | 92% | A |
| Danville | 11% | 2.1 | 24 | 92% | A |
| Dublin | 10% | 1.4 | 9 | 96% | A− |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in San Ramon
Where can I hike in San Ramon?
The longest trail networks: Hidden Valley Open Space, 13.5 miles; San Ramon Central Park, 1.3 miles; Sunrise Ridge Park, 1 miles; Memorial Park, 0.8 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
How much of San Ramon is conserved land?
22% 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 San Ramon’s trails?
OpenStreetMap records dogs as welcome at Memorial Park (on leash). For the rest, check the signs at the trailhead.
Where can I bike in San Ramon?
72 miles of bike routes are on the map: 62 of painted or protected lanes, 9.0 of off-road paths and 1.5 of shoulders and shared lanes.
Is there public land near San Ramon?
75,400 acres of parks and open public land lie inside San Ramon or within 10 miles of it (PAD-US), 664 of them inside the city line.
How much outdoors does San Ramon have?
Ahead of 90% of U.S. towns on the Outdoors grade, #179 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 San Ramon 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 →