Train Sim World 2020

This achievement is some what time consuming and it does not help how the loco in question is a shunter so we are not able to travel long distances in one scenario/service. I found the best service to run is the 06:01 Loaded Freight Delivery. I would suggest you first of all get to the point in the service when you are coupled to the wagons. From there save the game, so you don't have to repeat this every time you start. From there complete the service as normal, every time the service is completed you should add 6 or so miles onto the counter and should take around 20-25 minutes to complete each time. Also doing this can bag you some XP so this will help contribute towards the V100 master achievement also. Simply rinse and repeat this method and you should get the achievement no problems.