| Burlingame to Popovo | 6,508.24 mi (10,473.99 km) |
| Burlingame to Provadia | 6,543.33 mi (10,530.47 km) |
| Burlingame to Radnevo | 6,567.88 mi (10,569.99 km) |
| Burlingame to Radomir | 6,486.13 mi (10,438.42 km) |
| Burlingame to Rakitovo | 6,547.01 mi (10,536.40 km) |
| Burlingame to Rakovski | 6,547.66 mi (10,537.43 km) |
| Burlingame to Razgrad | 6,502.56 mi (10,464.86 km) |
| Burlingame to Razlog | 6,539.17 mi (10,523.77 km) |
| Burlingame to Ruse | 6,472.69 mi (10,416.79 km) |
| Burlingame to Samokov | 6,513.13 mi (10,481.87 km) |
| Burlingame to Sandanski | 6,554.38 mi (10,548.26 km) |
| Burlingame to Sevlievo | 6,504.84 mi (10,468.53 km) |
| Burlingame to Shumen | 6,526.86 mi (10,503.97 km) |
| Burlingame to Silistra | 6,480.75 mi (10,429.76 km) |
| Burlingame to Sliven | 6,552.27 mi (10,544.85 km) |
