To get to Huntingdon by car, take the A14 if you're coming from the east or west. If you're coming from the north, take the A1. If you're coming from the south, take the A1 or the A14. From Cambridge, take the A14 eastbound. From Peterborough, take the A1 southbound.
If you're traveling by train, Huntingdon has a station on the East Coast Main Line. Trains run frequently between London and Edinburgh, stopping at Huntingdon along the way. If you're coming from Peterborough, you can take a train to Huntingdon with a change at either Peterborough or Peterborough North station. From Cambridge, take a direct train to Huntingdon.
If you're already in Cambridgeshire, there are several nearby landmarks worth visiting before or after your trip to Huntingdon. The university city of Cambridge is just 20 miles to the south, and has plenty of sights to see, including the famous colleges and the River Cam. The cathedral city of Ely is also nearby, just 15 miles to the north. The historic town of St Ives is just seven miles away and has a charming riverside setting, while Grafham Water is a large reservoir just six miles away that's popular for fishing and boating.