| Wilkinsburg to Popovo | 5,046.27 mi (8,121.18 km) |
| Wilkinsburg to Provadia | 5,099.66 mi (8,207.11 km) |
| Wilkinsburg to Radnevo | 5,081.47 mi (8,177.83 km) |
| Wilkinsburg to Radomir | 4,952.94 mi (7,970.98 km) |
| Wilkinsburg to Rakitovo | 5,022.62 mi (8,083.12 km) |
| Wilkinsburg to Rakovski | 5,044.07 mi (8,117.65 km) |
| Wilkinsburg to Razgrad | 5,048.95 mi (8,125.51 km) |
| Wilkinsburg to Razlog | 5,002.41 mi (8,050.60 km) |
| Wilkinsburg to Ruse | 5,014.54 mi (8,070.13 km) |
| Wilkinsburg to Samokov | 4,986.22 mi (8,024.54 km) |
| Wilkinsburg to Sandanski | 5,008.73 mi (8,060.78 km) |
| Wilkinsburg to Sevlievo | 5,017.34 mi (8,074.63 km) |
| Wilkinsburg to Shumen | 5,076.07 mi (8,169.15 km) |
| Wilkinsburg to Silistra | 5,051.05 mi (8,128.88 km) |
| Wilkinsburg to Sliven | 5,079.89 mi (8,175.29 km) |
