| Okmulgee to Castelletto sopra Ticino | 5,122.06 mi (8,243.17 km) |
| Okmulgee to Castelli Calepio | 5,175.18 mi (8,328.64 km) |
| Okmulgee to Castelnovo ne' Monti | 5,243.85 mi (8,439.16 km) |
| Okmulgee to Castelnuovo Berardenga | 5,332.87 mi (8,582.43 km) |
| Okmulgee to Castelnuovo di Porto | 5,424.16 mi (8,729.35 km) |
| Okmulgee to Castelnuovo di Verona | 5,217.19 mi (8,396.25 km) |
| Okmulgee to Castelnuovo Rangone | 5,260.13 mi (8,465.37 km) |
| Okmulgee to Castelvetrano | 5,627.83 mi (9,057.12 km) |
| Okmulgee to Castelvetro di Modena | 5,262.86 mi (8,469.76 km) |
| Okmulgee to Castenaso | 5,282.96 mi (8,502.11 km) |
| Okmulgee to Castenedolo | 5,197.32 mi (8,364.28 km) |
| Okmulgee to Castiglion Fiorentino | 5,349.55 mi (8,609.28 km) |
| Okmulgee to Castiglione del Lago | 5,363.35 mi (8,631.48 km) |
| Okmulgee to Castiglione delle Stiviere | 5,208.14 mi (8,381.70 km) |
| Okmulgee to Castrolibero | 5,697.33 mi (9,168.97 km) |
