| Alpena to Ridgeland (Mississippi) | 944.99 mi (1,520.82 km) |
| Alpena to Ridgewood (New Jersey) | 548.92 mi (883.40 km) |
| Alpena to Rifle (Colorado) | 1,295.23 mi (2,084.47 km) |
| Alpena to Rincon (Georgia) | 890.84 mi (1,433.67 km) |
| Alpena to Ringwood (New Jersey) | 537.11 mi (864.40 km) |
| Alpena to Río Grande (Puerto Rico) | 2,104.18 mi (3,386.35 km) |
| Alpena to Rio Grande City (Texas) | 1,547.25 mi (2,490.06 km) |
| Alpena to Rio Linda (California) | 1,984.76 mi (3,194.16 km) |
| Alpena to Rio Rancho (New Mexico) | 1,394.42 mi (2,244.10 km) |
| Alpena to Rio Rico (Arizona) | 1,750.88 mi (2,817.76 km) |
| Alpena to Ripon (California) | 1,998.24 mi (3,215.86 km) |
| Alpena to River Edge (New Jersey) | 554.26 mi (891.99 km) |
| Alpena to River Falls (Wisconsin) | 448.98 mi (722.56 km) |
| Alpena to River Forest (Illinois) | 310.46 mi (499.63 km) |
| Alpena to River Grove (Illinois) | 309.65 mi (498.33 km) |
