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B+Outdoors
Outdoors in Union Mill

Union Mill has 443 acres of parks, 99 for every 1,000 residents

7% of Union Mill’s land is conserved, about 444 acres. 52% of residents live within a half mile of a park. 3.5 miles of mapped trail cross Union Mill, 0.4 per square mile of land.

Ahead of 70% of U.S. towns · #104 of 253 in Virginia. What drives it

Conserved land
7%
444 acres · of 10.0 sq mi of land
Trails
3.5 mi
0.4 per sq mi of land
Park land
443 ac
99 acres per 1,000 residents
Near a park
52%
of residents within ½ mile
Bike routes
0.7 mi
0.7 mi paths
Lakes & rivers
2

What kind of outdoors town is Union Mill?

Read from the map. The page puts what stands out first.

Outdoors grade

How much outdoors does Union Mill have?

On conserved land, trails, park land and how close residents live to a park, Union Mill is ahead of 70% of U.S. towns, #104 of 253 in Virginia. Park acres per resident hold the grade up; the share of residents near a park pulls it down.

B+
OutdoorsA character grade: shown, never part of Union Mill’s overall grade.
All U.S. towns we grade (21,298)Ahead of 70%
LessMore
Virginia towns of 2,500+ (253)Ahead of 59%
How sure. Graded on any three of the four inputs instead, the letter would range from B 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.

12
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 Braddock Park, with 0.4 miles. Directions go to the nearest trailhead or public parking.

Braddock Park

Park
59 acres0.4 mi of trail
Dog rules not recorded
Directionsto the parking lot

Chapel Road Park

Managed by Fairfax County Park Authority
26 acres0.3 mi of trail
Chapel Road Park Trail
Dog rules not recorded
No trailhead mapped yetWebsite ↗
Who protects it

444 conserved acres

7% of Union Mill’s land. Who manages Union Mill’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.

County438 ac
Land trusts & nonprofits11 ac
Not recorded438 ac
Local Park · 876 acConservation Easement · 6 acOther Easement · 6 ac
Good to know

Conserved doesn’t always mean open to visitors. 6 acres are conservation easements, usually private land. The walks above are places people visit.

The biggest protected parcels
Parcel (PAD-US)Managed byAcresPublic access
Braddock City Park
Local Park
County825Open
Chapel Road City Park
Local Park
County51Open
Things to do

2 places to go in Union Mill

Beaches, playgrounds, peaks, falls and more. Pick a kind.

Playgrounds in Union Mill
Kristen P. Cubbage Memorial Playground
Directions

Plus 1 playground without a name on the map. Tap “Show all on map” to see it.

Trails & water

2 named trails and 2 lakes & rivers

Named trails
Open to bikes · 0.5 miHorses · 0.5 miUnpaved · 1.3 mi
Chapel Road Park Trail0.3 mi
Clifton Creek Trail0.2 mi
Lakes & rivers tap for directions
Biking & sports

0.7 miles of bike routes

Bike lanes are often missing from the map in smaller towns, so that number is likely low.

0.7 mi
off-road bike paths
Courts & fields
10Tennis
10Baseball
6Equestrian
3Basketball
3Tracks
2Soccer
1Football
1Skate park

Includes school and college facilities, which aren’t always open to the public.

When to get out

The best walking months in Union Mill: April and August

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.

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)9.710.711.813.214.314.914.613.712.411.110.09.5
High (°F)434755677583878679685747
Rain (in)2.92.63.53.34.24.14.33.54.13.73.03.4

February is the driest month (2.6 in) and July the warmest (highs of 87 °F). 4.3 inches fall in July, the wettest month. Summer highs reach 87 °F, too hot for the outline. The climate in Union Mill →

Next door

Union Mill and its neighbors

Tap a town to see its outdoors.

TownConserved
of land
Trail mi
per sq mi
Park acres
per 1,000
Near a park
½ mile
Outdoors
Union Mill7%0.49952%B+
Fairfax Station6%0.33196%A−
Braddock9%1.85477%A
Centreville12%1.21397%A
Clifton— not graded: under 1,000 residents or part of its town
Fair Lakes11%0.42099%+A

The four inputs of the Outdoors grade, from the engine; shares are of land, not water.

Questions about parks and trails in Union Mill

Where can I hike in Union Mill?

The longest trail networks: Braddock Park, 0.4 miles; Chapel Road Park, 0.3 miles. Each one is on the map above, with directions to the nearest trailhead or parking.

How much of Union Mill is conserved land?

7% of its land, against a typical 4% for a Virginia town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.

Are dogs allowed on Union Mill’s trails?

Braddock Park and Chapel Road Park don’t have dog rules recorded on the map; check the signs at the trailhead.

Where can I bike in Union Mill?

0.7 miles of bike routes are on the map: 0.7 of off-road paths.

Is there public land near Union Mill?

31,118 acres of parks and open public land lie inside Union Mill or within 10 miles of it (PAD-US), 443 of them inside the town line.

How much outdoors does Union Mill have?

Ahead of 70% of U.S. towns on the Outdoors grade, #104 of 253 in Virginia. 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 Union Mill neighbors.

Town Square →
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 →