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Merchants' National BankMerchants' National Bank · Photo: Einar Einarsson Kvaran aka Carptrash · CC BY-SA 3.0
AOutdoors
Outdoors in Grinnell

6% of Grinnell’s land is conserved, and virtually every resident lives within a half mile of a park

Virtually every resident lives within a half mile of a park. 5.1 miles of mapped trail cross Grinnell, 0.9 per square mile of land. The biggest trail networks: Ahrens/Paschall Memorial Park (2.2 mi), Arbor Lake Park (0.8 mi).

Ahead of 88% of U.S. towns · #12 of 140 in Iowa. What drives it

Conserved land
6%
207 acres · of 5.7 sq mi of land
Trails
5.1 mi
0.9 per sq mi of land
Park land
238 ac
25 acres per 1,000 residents
Near a park
99%+
of residents within ½ mile
Bike routes
1.4 mi
1.4 mi paths
Lakes & rivers
2

What kind of outdoors town is Grinnell?

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

Outdoors grade

How much outdoors does Grinnell have?

On conserved land, trails, park land and how close residents live to a park, Grinnell is ahead of 88% of U.S. towns, #12 of 140 in Iowa. All four inputs are above most U.S. towns; the share of residents near a park ranks highest, conserved land lowest.

A
OutdoorsA character grade: shown, never part of Grinnell’s overall grade.
All U.S. towns we grade (21,298)Ahead of 88%
LessMore
Iowa towns of 2,500+ (140)Ahead of 92%
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.

1234
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 Ahrens/Paschall Memorial Park, with 2.2 miles. Directions go to the nearest trailhead or public parking.

Ahrens/Paschall Memorial Park

Managed by Ahrens Park Foundation
80 acres2.2 mi of trail
Dog rules not recorded
Directionsto the parking lotWebsite ↗

Arbor Lake Park

Managed by City of Grinnell, Iowa
79 acres0.8 mi of trail
Dog rules not recorded
Directionsto the parking lot

Central Park

Managed by City of Grinnell, Iowa
3 acres0.3 mi of trail
Dog rules not recorded
Directionsto the parking lot

Miller Park

Managed by City of Grinnell, Iowa
25 acres
Dog rules not recorded
Directionsto the parking lot
All 10 parks & preserves
Ahrens/Paschall Memorial Park80 acres · 2.2 mi of trail · Ahrens Park Foundation
Directions
Arbor Lake Park79 acres · 0.8 mi of trail · City of Grinnell, Iowa
Directions
Central Park3 acres · 0.3 mi of trail · City of Grinnell, Iowa
Directions
Van Horn Park8 acres · 0.1 mi of trail · City of Grinnell, Iowa
Summer Street Park6 acres · 0.1 mi of trail · City of Grinnell
Directions
Bailey Park5 acres · 0.1 mi of trail · City of Grinnell, Iowa
Directions
Lion's Park3 acres · 0.1 mi of trail · City of Grinnell, Iowa
Directions
Miller Park25 acres · City of Grinnell, Iowa
Directions
Merrill Park8 acres · City of Grinnell
Directions
Thomazin Park2 acres · City of Grinnell, Iowa
Directions
Who protects it

207 conserved acres

6% of Grinnell’s land. Who manages Grinnell’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.

Town or city207 ac
Local Park · 203 acLocal Recreation Area · 4 ac
The biggest protected parcels
Parcel (PAD-US)Managed byAcresPublic access
Arbor Lake Park
Local Park
Town or city79Open
Grinnell Athletic & Recreation Center
Local Park
Town or city62Open
Miller Park
Local Park
Town or city26Open
Merrill Park
Local Park
Town or city8Open
Van Horne Park
Local Park
Town or city8Open
Lions Park
Local Park
Town or city6Open
Bailey Park
Local Park
Town or city5Open
Jaycee Park
Local Park
Town or city4Open
Grinnell Mutual Family Aquatic Center
Local Recreation Area
Town or city4Open
Central Park
Local Park
Town or city4Open

1 smaller protected places aren’t shown.

Things to do

24 places to go in Grinnell

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

Community gardens in Grinnell
Marvin GardenImagine Grinnell
Directions
Trails & water

2 lakes & rivers

Lakes & rivers tap for directions
Biking & sports

1.4 miles of bike routes

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

1.4 mi
off-road bike paths
Courts & fields
25Tennis
16Soccer
12Tracks
8Basketball
7Baseball
6Softball
4Pickleball
3Beach volleyball

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

History along the way

17 places on the National Register, one a National Historic Landmark

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.

History →
★
Merchants' National BankNational Historic Landmark · Building · listed 1976
About it
Stewart LibraryBuilding · listed 1976
About it
Chicago, Rock Island and Pacific Railroad-Grinnell Passenger StationSite · listed 1976
About it
Spaulding Manufacturing CompanyBuilding · listed 1978
About it
Goodnow HallBuilding · listed 1979
About it
Mears HallBuilding · listed 1979
About it
Levi P. Grinnell HouseBuilding · listed 1979
About it
B. J. Ricker HouseBuilding · listed 1979
About it
Charles H. Spencer HouseBuilding · listed 1980
About it
Bowers and McDonald Office BuildingBuilding · listed 1990
About it
Interior Telephone Company BuildingBuilding · listed 1990
About it
Grinnell Herald BuildingBuilding · listed 1991
About it

5 more on the History page.

When to get out

September is the best month for walking in Grinnell

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)9.510.511.813.314.515.214.913.812.411.09.89.2
High (°F)283347607180848275624734
Rain (in)1.01.22.13.85.15.64.34.33.72.92.01.5

January is the driest month (1.0 in) and July the warmest (highs of 84 °F). 5.6 inches fall in June, the wettest month. The climate in Grinnell →

Questions about parks and trails in Grinnell

Where can I hike in Grinnell?

The longest trail networks: Ahrens/Paschall Memorial Park, 2.2 miles; Arbor Lake Park, 0.8 miles; Central Park, 0.3 miles. Each one is on the map above, with directions to the nearest trailhead or parking.

How much of Grinnell is conserved land?

6% of its land, against a typical 3% for an Iowa town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.

Are dogs allowed on Grinnell’s trails?

Ahrens/Paschall Memorial Park and Arbor Lake Park don’t have dog rules recorded on the map; check the signs at the trailhead.

Where can I bike in Grinnell?

1.4 miles of bike routes are on the map: 1.4 of off-road paths.

Is there public land near Grinnell?

4,081 acres of parks and open public land lie inside Grinnell or within 10 miles of it (PAD-US), 238 of them inside the city line.

How much outdoors does Grinnell have?

Ahead of 88% of U.S. towns on the Outdoors grade, #12 of 140 in Iowa. 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 Grinnell 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 →