| Markham to Oak Harbor (Washington) | 1,753.53 mi (2,822.03 km) |
| Markham to Oak Hills (Oregon) | 1,766.13 mi (2,842.32 km) |
| Markham to Oak Lawn (Illinois) | 8.50 mi (13.69 km) |
| Markham to Oak Park (California) | 1,759.39 mi (2,831.47 km) |
| Markham to Oak Park (Illinois) | 20.50 mi (32.98 km) |
| Markham to Oak Park (Michigan) | 238.91 mi (384.49 km) |
| Markham to Oak Ridge (Florida) | 973.25 mi (1,566.29 km) |
| Markham to Oak Ridge (New Jersey) | 685.11 mi (1,102.58 km) |
| Markham to Oak Ridge (Tennessee) | 430.15 mi (692.26 km) |
| Markham to Oakdale (California) | 1,771.82 mi (2,851.47 km) |
| Markham to Oakdale (Minnesota) | 353.59 mi (569.04 km) |
| Markham to Oakland (California) | 1,841.86 mi (2,964.18 km) |
| Markham to Oakland (New Jersey) | 698.36 mi (1,123.90 km) |
| Markham to Oakland Park (Florida) | 1,148.72 mi (1,848.69 km) |
| Markham to Oakleaf Plantation (Florida) | 854.60 mi (1,375.35 km) |
