| Penarth to Lake St. Louis (Missouri) | 4,100.02 mi (6,598.34 km) |
| Penarth to Lake Station (Indiana) | 3,832.60 mi (6,167.97 km) |
| Penarth to Lake Stevens (Washington) | 4,678.38 mi (7,529.12 km) |
| Penarth to Lake Stickney (Washington) | 4,690.03 mi (7,547.87 km) |
| Penarth to Lake Tapps (Washington) | 4,723.53 mi (7,601.79 km) |
| Penarth to Lake Wales (Florida) | 4,251.70 mi (6,842.44 km) |
| Penarth to Lake Wylie (South Carolina) | 3,882.04 mi (6,247.53 km) |
| Penarth to Lake Zurich (Illinois) | 3,836.33 mi (6,173.98 km) |
| Penarth to Lakeland (Florida) | 4,260.12 mi (6,856.00 km) |
| Penarth to Lakeland (Tennessee) | 4,227.96 mi (6,804.25 km) |
| Penarth to Lakeland Highlands (Florida) | 4,264.81 mi (6,863.55 km) |
| Penarth to Lakeland North (Washington) | 4,720.63 mi (7,597.12 km) |
| Penarth to Lakeland South (Washington) | 4,723.96 mi (7,602.48 km) |
| Penarth to Lakeland Village (California) | 5,338.45 mi (8,591.41 km) |
| Penarth to Lakeside (California) | 5,367.15 mi (8,637.60 km) |
