| Peoria to Olympia (Washington) | 1,698.95 mi (2,734.20 km) |
| Peoria to Olympia Heights (Florida) | 1,166.86 mi (1,877.88 km) |
| Peoria to Omaha (Nebraska) | 337.42 mi (543.02 km) |
| Peoria to On Top of the World Designated Place (Florida) | 904.61 mi (1,455.82 km) |
| Peoria to Onalaska (Wisconsin) | 231.45 mi (372.48 km) |
| Peoria to Oneida (New York) | 734.23 mi (1,181.63 km) |
| Peoria to Oneonta (New York) | 759.84 mi (1,222.85 km) |
| Peoria to Ontario (California) | 1,597.15 mi (2,570.37 km) |
| Peoria to Ontario (Oregon) | 1,407.77 mi (2,265.59 km) |
| Peoria to Opa-locka (Florida) | 1,158.07 mi (1,863.73 km) |
| Peoria to Opelika (Alabama) | 606.11 mi (975.44 km) |
| Peoria to Opelousas (Louisiana) | 719.96 mi (1,158.66 km) |
| Peoria to Orange (California) | 1,615.28 mi (2,599.53 km) |
| Peoria to Orange (Texas) | 770.34 mi (1,239.74 km) |
| Peoria to Orange City (Florida) | 942.11 mi (1,516.17 km) |
