| Placentia to Arcata (California) | 590.65 mi (950.56 km) |
| Placentia to Archdale (North Carolina) | 2,138.80 mi (3,442.06 km) |
| Placentia to Arden-Arcade (California) | 380.81 mi (612.86 km) |
| Placentia to Ardmore (Oklahoma) | 1,185.04 mi (1,907.13 km) |
| Placentia to Ardmore (Pennsylvania) | 2,365.21 mi (3,806.44 km) |
| Placentia to Arecibo (Puerto Rico) | 3,307.68 mi (5,323.20 km) |
| Placentia to Arkadelphia (Arkansas) | 1,416.10 mi (2,279.00 km) |
| Placentia to Arkansas City (Kansas) | 1,189.34 mi (1,914.06 km) |
| Placentia to Arlington (Tennessee) | 1,601.13 mi (2,576.78 km) |
| Placentia to Arlington (Texas) | 1,198.03 mi (1,928.04 km) |
| Placentia to Arlington (Virginia) | 2,274.17 mi (3,659.92 km) |
| Placentia to Arlington (Washington) | 1,011.87 mi (1,628.45 km) |
| Placentia to Arlington Heights (Illinois) | 1,712.45 mi (2,755.93 km) |
| Placentia to Arnold (Maryland) | 2,305.68 mi (3,710.64 km) |
| Placentia to Arnold (Missouri) | 1,558.92 mi (2,508.84 km) |
