| Upper Arlington to Popovo | 5,187.73 mi (8,348.84 km) |
| Upper Arlington to Provadia | 5,240.33 mi (8,433.50 km) |
| Upper Arlington to Radnevo | 5,224.54 mi (8,408.09 km) |
| Upper Arlington to Radomir | 5,098.07 mi (8,204.55 km) |
| Upper Arlington to Rakitovo | 5,167.59 mi (8,316.42 km) |
| Upper Arlington to Rakovski | 5,187.95 mi (8,349.20 km) |
| Upper Arlington to Razgrad | 5,189.93 mi (8,352.39 km) |
| Upper Arlington to Razlog | 5,147.99 mi (8,284.89 km) |
| Upper Arlington to Ruse | 5,155.61 mi (8,297.15 km) |
| Upper Arlington to Samokov | 5,131.15 mi (8,257.79 km) |
| Upper Arlington to Sandanski | 5,154.85 mi (8,295.93 km) |
| Upper Arlington to Sevlievo | 5,160.15 mi (8,304.45 km) |
| Upper Arlington to Shumen | 5,217.04 mi (8,396.01 km) |
| Upper Arlington to Silistra | 5,190.63 mi (8,353.50 km) |
| Upper Arlington to Sliven | 5,222.14 mi (8,404.22 km) |
