| Merrifield to Oakley (California) | 2,382.50 mi (3,834.26 km) |
| Merrifield to Oakton (Virginia) | 3.35 mi (5.39 km) |
| Merrifield to Oakville (Missouri) | 705.56 mi (1,135.49 km) |
| Merrifield to Oatfield (Oregon) | 2,334.95 mi (3,757.74 km) |
| Merrifield to Ocala (Florida) | 726.13 mi (1,168.59 km) |
| Merrifield to Ocean Acres (New Jersey) | 169.37 mi (272.57 km) |
| Merrifield to Ocean City (New Jersey) | 144.25 mi (232.14 km) |
| Merrifield to Ocean Pines (Maryland) | 117.94 mi (189.80 km) |
| Merrifield to Ocean Pointe (Hawaii) | 4,827.12 mi (7,768.49 km) |
| Merrifield to Ocean Springs (Mississippi) | 877.66 mi (1,412.45 km) |
| Merrifield to Oceanside (California) | 2,253.59 mi (3,626.80 km) |
| Merrifield to Oceanside (New York) | 226.86 mi (365.09 km) |
| Merrifield to Ocoee (Florida) | 752.48 mi (1,211.00 km) |
| Merrifield to Oconomowoc (Wisconsin) | 654.76 mi (1,053.73 km) |
| Merrifield to Odenton (Maryland) | 32.36 mi (52.07 km) |
