| Ottawa to Popovo | 5,330.68 mi (8,578.90 km) |
| Ottawa to Provadia | 5,380.82 mi (8,659.59 km) |
| Ottawa to Radnevo | 5,372.07 mi (8,645.50 km) |
| Ottawa to Radomir | 5,252.14 mi (8,452.51 km) |
| Ottawa to Rakitovo | 5,320.93 mi (8,563.21 km) |
| Ottawa to Rakovski | 5,337.97 mi (8,590.64 km) |
| Ottawa to Razgrad | 5,331.50 mi (8,580.21 km) |
| Ottawa to Razlog | 5,303.23 mi (8,534.73 km) |
| Ottawa to Ruse | 5,297.53 mi (8,525.55 km) |
| Ottawa to Samokov | 5,284.52 mi (8,504.61 km) |
| Ottawa to Sandanski | 5,311.70 mi (8,548.35 km) |
| Ottawa to Sevlievo | 5,307.11 mi (8,540.96 km) |
| Ottawa to Shumen | 5,358.45 mi (8,623.58 km) |
| Ottawa to Silistra | 5,328.16 mi (8,574.85 km) |
| Ottawa to Sliven | 5,367.25 mi (8,637.76 km) |
