About ¼ or a fourth of the way, you can stop at Dartford, United Kingdom. This is about half an hour east of London.
About ¾ or three fourths of the way, you can stop at Canterbury, United Kingdom. This is about 1½ hours east of London, or about half an hour northwest of Dover, United Kingdom.
If you drive straight through without stopping at all, the total distance is 123 km. The distances shown above don't include local roads to get into each town, so if you're planning a long road trip, make sure you factor in traffic and road conditions, rest stop breaks, and interesting detours along the way. If you're in a rush, you can do the trip with zero stops, and your total travel time would be around 1 hour, 51 minutes.