| Pecos to Orangeburg (South Carolina) | 1,326.12 mi (2,134.19 km) |
| Pecos to Orangevale (California) | 1,118.21 mi (1,799.58 km) |
| Pecos to Orchards (Washington) | 1,418.02 mi (2,282.09 km) |
| Pecos to Orcutt (California) | 1,005.56 mi (1,618.30 km) |
| Pecos to Oregon (Ohio) | 1,316.33 mi (2,118.43 km) |
| Pecos to Oregon (Wisconsin) | 1,110.48 mi (1,787.15 km) |
| Pecos to Oregon City (Oregon) | 1,405.94 mi (2,262.64 km) |
| Pecos to Orem (Utah) | 766.07 mi (1,232.87 km) |
| Pecos to Orinda (California) | 1,148.74 mi (1,848.72 km) |
| Pecos to Orland Park (Illinois) | 1,116.69 mi (1,797.14 km) |
| Pecos to Orlando (Florida) | 1,341.08 mi (2,158.27 km) |
| Pecos to Ormond Beach (Florida) | 1,342.23 mi (2,160.12 km) |
| Pecos to Oro Valley (Arizona) | 442.93 mi (712.83 km) |
| Pecos to Oroville (California) | 1,156.55 mi (1,861.29 km) |
| Pecos to Oshkosh (Wisconsin) | 1,191.85 mi (1,918.09 km) |
