26.75 miles Victoria to Gatwick and 36 miles from Paddington to Reading. I'm not sure if that counts as roughly the same but yes, the Reading fare is definitely more expensive per mile.The journey from Paddington to Reading is roughly the same distance and 5-10 minutes shorter, yet GWR charges £30 for an Off-Peak Single, and nearly £40 for an Anytime Single. I can absolutely see them doing this and getting away with it .