| Grimstad to Popovo | 1,281.98 mi (2,063.15 km) |
| Grimstad to Provadia | 1,322.60 mi (2,128.51 km) |
| Grimstad to Radnevo | 1,338.01 mi (2,153.32 km) |
| Grimstad to Radomir | 1,254.76 mi (2,019.34 km) |
| Grimstad to Rakitovo | 1,314.78 mi (2,115.94 km) |
| Grimstad to Rakovski | 1,315.84 mi (2,117.63 km) |
| Grimstad to Razgrad | 1,278.22 mi (2,057.09 km) |
| Grimstad to Razlog | 1,307.65 mi (2,104.46 km) |
| Grimstad to Ruse | 1,246.69 mi (2,006.36 km) |
| Grimstad to Samokov | 1,281.12 mi (2,061.76 km) |
| Grimstad to Sandanski | 1,323.60 mi (2,130.14 km) |
| Grimstad to Sevlievo | 1,274.15 mi (2,050.55 km) |
| Grimstad to Shumen | 1,303.74 mi (2,098.16 km) |
| Grimstad to Silistra | 1,263.18 mi (2,032.89 km) |
| Grimstad to Sliven | 1,324.54 mi (2,131.64 km) |
