| Muskogee to Popovo | 5,854.38 mi (9,421.72 km) |
| Muskogee to Provadia | 5,904.35 mi (9,502.13 km) |
| Muskogee to Radnevo | 5,895.97 mi (9,488.65 km) |
| Muskogee to Radomir | 5,776.11 mi (9,295.75 km) |
| Muskogee to Rakitovo | 5,844.90 mi (9,406.47 km) |
| Muskogee to Rakovski | 5,861.94 mi (9,433.87 km) |
| Muskogee to Razgrad | 5,855.11 mi (9,422.89 km) |
| Muskogee to Razlog | 5,827.18 mi (9,377.94 km) |
| Muskogee to Ruse | 5,821.17 mi (9,368.27 km) |
| Muskogee to Samokov | 5,808.49 mi (9,347.86 km) |
| Muskogee to Sandanski | 5,835.60 mi (9,391.49 km) |
| Muskogee to Sevlievo | 5,831.00 mi (9,384.09 km) |
| Muskogee to Shumen | 5,882.04 mi (9,466.24 km) |
| Muskogee to Silistra | 5,851.45 mi (9,417.00 km) |
| Muskogee to Sliven | 5,891.07 mi (9,480.76 km) |
