The calculated distance (air line) between Ried im Innkreis and Sankt Pölten is approximately 99 miles respectively 159 kilometers.
By car or train, the actual journey to Sankt Pölten is certainly longer, as only the direct route (as the crow flies) between Ried im Innkreis and Sankt Pölten has been calculated here.
Air line (approximately)
159 kilometers
86 nautical miles