| Portsmouth to Yonkers (New York) | 3,421.34 mi (5,506.12 km) |
| Portsmouth to Yorba Linda (California) | 5,435.19 mi (8,747.10 km) |
| Portsmouth to York (Pennsylvania) | 3,581.62 mi (5,764.06 km) |
| Portsmouth to Yorktown (Indiana) | 3,927.34 mi (6,320.45 km) |
| Portsmouth to Yorkville (Illinois) | 3,975.04 mi (6,397.20 km) |
| Portsmouth to Youngstown (Ohio) | 3,691.85 mi (5,941.45 km) |
| Portsmouth to Youngsville (Louisiana) | 4,675.49 mi (7,524.48 km) |
| Portsmouth to Ypsilanti (Michigan) | 3,760.14 mi (6,051.37 km) |
| Portsmouth to Yuba City (California) | 5,258.95 mi (8,463.47 km) |
| Portsmouth to Yucaipa (California) | 5,402.90 mi (8,695.14 km) |
| Portsmouth to Yucca Valley (California) | 5,377.15 mi (8,653.69 km) |
| Portsmouth to Yukon (Oklahoma) | 4,630.38 mi (7,451.87 km) |
| Portsmouth to Yulee (Florida) | 4,214.53 mi (6,782.63 km) |
| Portsmouth to Yuma (Arizona) | 5,398.71 mi (8,688.39 km) |
| Portsmouth to Zachary (Louisiana) | 4,612.87 mi (7,423.70 km) |
