- Marilla Covered Bridge
- Marilla Bridges Trail, Bradford, Pennsylvania, 16701, North PA
- McConnells Mill State Park
- 1761 McConnells Mill Rd, Portersville, PA, 16051
- McConnells Mills State Park - Mountville Rd
- 1995 Mountville Rd,, Portersville, PA, 16051
- McGuffey Community Park
- McGuffey Community Park, Claysville, PA, 15323
- McKinley Park
- 623 Bausman St,, Pittsburgh, PA, 15210
- Meadowview Conservation Area
- Scaife Rd,, Sewickley, PA, 15143
- Meyer Farm Preserve
- Farm Preserve, Ridge Road, South Fayette Township, PA, 15071
- Mingo Creek County Park
- 1 Ebenezer Bridge Rd, Nottingham Township, PA, 15330
- Mingo Creek Park, Washington County
- Mingo Creek Park, Finleyville, PA , 15332
- Mohican State Forest
- Gorge Overlook, Perrysville, Ohio
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