How far can the post or express rider travel in the Regency era?

For my latest novella/novel, I needed to know how long it would take an express rider to get from Pemberley to Netherfield. Or perhaps just the regular post. So, if anyone else is writing Regency romance or Regency anything and needs to know about travel in England, the road conditions, the roads, horses, etc then here is a great big link dump for you. https://core100austen.wordpress.com/w... http://orbis.stanford.edu/ This is actually a map of the world...