Where a fast, long-legged dog can really stretch. These are the picks with acreage to burn — real sizes, from park data, not my opinion.
Metro Area · 11 acres
Metro
fenced
In the far western Great Parks system at Miami Whitewater Forest (Cleves/Harrison).
Cincinnati City · 10 acres
Open
fenced · water · shade
One of the largest off-leash areas around, with separate sections for small and large dogs, drinking fountains, a dog shower, plenty of trees for shade and benches.
Metro Area
Metro
fenced · water
Inside Voice of America MetroPark in West Chester/Mason.
Metro Area · 4 acres
Metro
fenced · water
A 4-acre off-leash field on the east side along the Ohio River, with a dog water fountain and a mural painted by ArtWorks artists.
Metro Area · 1 acre
Metro
fenced
Named for a local veterinarian.
Cincinnati City · 2 acres
Open
fenced
Named for the Cincinnati-born actress and singer Doris Day.
Cincinnati City
Open
fenced
A downtown off-leash dog park run entirely by volunteers, with separate play areas for small and large dogs.
Metro Area
Metro
fenced
Across the river in Northern Kentucky, inside Highland Hills Park.
Metro Area
Metro
fenced
North of Cincinnati in Hamilton's Veterans Park.
Metro Area
Metro
fenced
Across the river in Newport, Kentucky.
Metro Area · 38,000 sq ft
Metro
fenced
Northeast of Cincinnati in Mason.
Metro Area
Metro
fenced
In Blue Ash's Summit Park.
Cincinnati City · 12,000 sq ft
Open
fenced · water
In Over-the-Rhine's Washington Park.
Metro Area
Metro
not fenced
A historic estate turned park in Amberley Village.
Metro Area
Metro
not fenced
The big hilltop park overlooking downtown Cincinnati from Covington, Kentucky.
Cincinnati City
Open
not fenced
A huge woodlands park on Cincinnati's north side (Great Parks of Hamilton County) with lakes, trails and plenty of room for leashed dogs.
Cincinnati City · 1,459 acres
Open
not fenced
Cincinnati's largest park, with about 1,459 acres of paved and unpaved leashed trails.
Cincinnati City · Two yards — small & large
Open
fenced · water
Free public off-leash park in the redeveloped former U.S.