| Holyoke to Popovo | 4,683.30 mi (7,537.04 km) |
| Holyoke to Provadia | 4,737.91 mi (7,624.94 km) |
| Holyoke to Radnevo | 4,715.82 mi (7,589.38 km) |
| Holyoke to Radomir | 4,584.17 mi (7,377.50 km) |
| Holyoke to Rakitovo | 4,654.02 mi (7,489.92 km) |
| Holyoke to Rakovski | 4,677.19 mi (7,527.20 km) |
| Holyoke to Razgrad | 4,686.76 mi (7,542.62 km) |
| Holyoke to Razlog | 4,632.88 mi (7,455.90 km) |
| Holyoke to Ruse | 4,652.27 mi (7,487.10 km) |
| Holyoke to Samokov | 4,617.72 mi (7,431.50 km) |
| Holyoke to Sandanski | 4,638.35 mi (7,464.70 km) |
| Holyoke to Sevlievo | 4,652.22 mi (7,487.02 km) |
| Holyoke to Shumen | 4,713.88 mi (7,586.25 km) |
| Holyoke to Silistra | 4,691.19 mi (7,549.75 km) |
| Holyoke to Sliven | 4,715.58 mi (7,588.99 km) |
