| Peterborough to Popovo | 1,369.52 mi (2,204.03 km) |
| Peterborough to Provadia | 1,424.74 mi (2,292.90 km) |
| Peterborough to Radnevo | 1,402.42 mi (2,256.98 km) |
| Peterborough to Radomir | 1,274.91 mi (2,051.76 km) |
| Peterborough to Rakitovo | 1,344.32 mi (2,163.47 km) |
| Peterborough to Rakovski | 1,364.88 mi (2,196.56 km) |
| Peterborough to Razgrad | 1,373.35 mi (2,210.20 km) |
| Peterborough to Razlog | 1,325.21 mi (2,132.71 km) |
| Peterborough to Ruse | 1,338.83 mi (2,154.65 km) |
| Peterborough to Samokov | 1,307.87 mi (2,104.82 km) |
| Peterborough to Sandanski | 1,332.85 mi (2,145.02 km) |
| Peterborough to Sevlievo | 1,338.53 mi (2,154.15 km) |
| Peterborough to Shumen | 1,400.44 mi (2,253.79 km) |
| Peterborough to Silistra | 1,380.04 mi (2,220.96 km) |
| Peterborough to Sliven | 1,401.67 mi (2,255.76 km) |
