The calculated distance (air line) between Saint-Girons and La Seu d'Urgell is approximately 46 miles respectively 74 kilometers.
By car or train, the actual journey to La Seu d'Urgell is certainly longer, as only the direct route (as the crow flies) between Saint-Girons and La Seu d'Urgell has been calculated here.
Air line (approximately)
74 kilometers
40 nautical miles