Rail
East Midlands Trains runs a regular train service between London and Leicester/Nottingham, often with a stop in Kettering. Connections can be made in Leicester/London/Nottingham to reach other destinations.
A cheaper rail ticket to Stansted Airport can be purchased if asked to go via Leicester instead of London.
A14
The town is encircled on the west and south sides by the east-west running A14. The westbound A14 leads to the M1 London and the M6 Coventry & Birmingham. Eastbound the A14 continues to Cambridge and eventually the port of Harwich.