| Round Rock to Piedras Blancas | 4,880.17 mi (7,853.87 km) |
| Round Rock to Piera | 5,294.62 mi (8,520.87 km) |
| Round Rock to Pilar de la Horadada | 5,298.36 mi (8,526.88 km) |
| Round Rock to Pilas | 5,047.46 mi (8,123.10 km) |
| Round Rock to Pinos Puente | 5,174.49 mi (8,327.54 km) |
| Round Rock to Pinto | 5,083.61 mi (8,181.27 km) |
| Round Rock to Pizarra | 5,142.88 mi (8,276.67 km) |
| Round Rock to Plasencia | 4,976.55 mi (8,008.99 km) |
| Round Rock to Pola de Laviana | 4,908.59 mi (7,899.61 km) |
| Round Rock to Pola de Lena | 4,898.28 mi (7,883.02 km) |
| Round Rock to Pola de Siero | 4,900.08 mi (7,885.92 km) |
| Round Rock to Pollensa | 5,408.54 mi (8,704.20 km) |
| Round Rock to Ponferrada | 4,880.45 mi (7,854.32 km) |
| Round Rock to Pontevedra | 4,788.15 mi (7,705.78 km) |
| Round Rock to Portugalete | 5,021.59 mi (8,081.48 km) |
