| Green River to Odessa (Texas) | 773.15 mi (1,244.27 km) |
| Green River to Ogden (Utah) | 130.96 mi (210.77 km) |
| Green River to Oildale (California) | 665.67 mi (1,071.30 km) |
| Green River to Ojus (Florida) | 1,982.74 mi (3,190.92 km) |
| Green River to Okemos (Michigan) | 1,282.33 mi (2,063.70 km) |
| Green River to Oklahoma City (Oklahoma) | 768.71 mi (1,237.11 km) |
| Green River to Okmulgee (Oklahoma) | 832.44 mi (1,339.68 km) |
| Green River to Olathe (Kansas) | 793.19 mi (1,276.52 km) |
| Green River to Old Jamestown (Missouri) | 1,027.35 mi (1,653.36 km) |
| Green River to Oldsmar (Florida) | 1,771.53 mi (2,851.00 km) |
| Green River to Olean (New York) | 1,590.45 mi (2,559.58 km) |
| Green River to Olive Branch (Mississippi) | 1,153.83 mi (1,856.91 km) |
| Green River to Olivehurst (California) | 658.08 mi (1,059.08 km) |
| Green River to Olney (Maryland) | 1,704.34 mi (2,742.87 km) |
| Green River to Olympia (Washington) | 764.64 mi (1,230.57 km) |
