| Pittsburg to Redondela | 5,485.69 mi (8,828.37 km) |
| Pittsburg to Reinosa | 5,615.44 mi (9,037.17 km) |
| Pittsburg to Requena | 5,899.90 mi (9,494.96 km) |
| Pittsburg to Reus | 5,892.54 mi (9,483.13 km) |
| Pittsburg to Rianxo | 5,461.06 mi (8,788.73 km) |
| Pittsburg to Ribadeo | 5,485.20 mi (8,827.58 km) |
| Pittsburg to Rincon de la Victoria | 5,919.14 mi (9,525.94 km) |
| Pittsburg to Ripoll | 5,874.95 mi (9,454.82 km) |
| Pittsburg to Ripollet | 5,910.61 mi (9,512.21 km) |
| Pittsburg to Rojales | 5,984.74 mi (9,631.51 km) |
| Pittsburg to Ronda | 5,883.81 mi (9,469.08 km) |
| Pittsburg to Roquetas de Mar | 5,980.92 mi (9,625.36 km) |
| Pittsburg to Rosas | 5,904.47 mi (9,502.33 km) |
| Pittsburg to Rubi | 5,906.57 mi (9,505.70 km) |
| Pittsburg to Rute | 5,886.34 mi (9,473.14 km) |
