As I live outside Cambridge to the North I often have to enter the city from here. Just a couple of suggestions of the ways I like to go and one I prefer to avoid.
- The Busway all the way. Coming in you follow the busway past Cambridge North station, then follow the up the river into town.
- Girton. Use the busway until New Road Histon, turn right using cycle track to the Oakington-Girton road. Cycle track into Girton, 20 mph speed limit inside Girton so road cycling is OK. Finally down the dutch style cycle track along Huntingdon road.
The one I don't like? Busway to middle of Histon then roads, shared use pavement, across A14 junction and up Histon road. Just seems so much pfaff, and too many potential hazard points. Although the Histon road cycle track is much improved in the last few years.
Just a personal view, your mileage may vary.