| Markham to Cividale del Friuli | 4,682.33 mi (7,535.48 km) |
| Markham to Civita Castellana | 4,803.74 mi (7,730.87 km) |
| Markham to Civitanova Marche | 4,813.25 mi (7,746.17 km) |
| Markham to Civitavecchia | 4,787.51 mi (7,704.76 km) |
| Markham to Civitella in Val di Chiana | 4,728.50 mi (7,609.78 km) |
| Markham to Clusone | 4,557.12 mi (7,333.98 km) |
| Markham to Coccaglio | 4,571.17 mi (7,356.58 km) |
| Markham to Codigoro | 4,684.83 mi (7,539.50 km) |
| Markham to Codogno | 4,576.75 mi (7,365.56 km) |
| Markham to Codroipo | 4,670.82 mi (7,516.95 km) |
| Markham to Cogoleto | 4,565.69 mi (7,347.77 km) |
| Markham to Colle di Val d'Elsa | 4,705.92 mi (7,573.45 km) |
| Markham to Colle Salvetti | 4,671.59 mi (7,518.20 km) |
| Markham to Collecchio | 4,613.65 mi (7,424.96 km) |
| Markham to Colleferro | 4,852.30 mi (7,809.03 km) |
