| Piera to Ridgeland (Mississippi) | 4,868.13 mi (7,834.49 km) |
| Piera to Ridgewood (New Jersey) | 3,803.85 mi (6,121.71 km) |
| Piera to Rifle (Colorado) | 5,303.61 mi (8,535.33 km) |
| Piera to Rincon (Georgia) | 4,452.30 mi (7,165.28 km) |
| Piera to Ringwood (New Jersey) | 3,807.35 mi (6,127.34 km) |
| Piera to Río Grande (Puerto Rico) | 4,236.86 mi (6,818.56 km) |
| Piera to Rio Grande City (Texas) | 5,536.07 mi (8,909.44 km) |
| Piera to Rio Linda (California) | 5,843.97 mi (9,404.96 km) |
| Piera to Rio Rancho (New Mexico) | 5,463.40 mi (8,792.50 km) |
| Piera to Rio Rico (Arizona) | 5,823.55 mi (9,372.10 km) |
| Piera to Ripon (California) | 5,884.08 mi (9,469.51 km) |
| Piera to River Edge (New Jersey) | 3,802.20 mi (6,119.05 km) |
| Piera to River Falls (Wisconsin) | 4,471.32 mi (7,195.89 km) |
| Piera to River Forest (Illinois) | 4,384.48 mi (7,056.13 km) |
| Piera to River Grove (Illinois) | 4,384.16 mi (7,055.63 km) |
