If you are sourcing in a new area or going to locations you have not been to before then it can save time to have a plan to route you to each location in order to ensure that you are on the fastest route to each location. If you need to get the best route to 12 locations or less, Speedyroute.com offers a free service that does just that for you. They have a limit of 5 free route calculations from one client IP Address over a rolling 24 hour period. You can calculate more than 5 routes from the same IP Address within 24 hours and more than 12 locations in one route, but you must purchase a subscription in order to do so. For most people, the free service will be more than adequate for their needs.
A service like this is especially useful when you are going to garage sales. Since each location changes every week, you do not develop a general idea for the best route to the locations like you would a retail store, thrift store, or wholesale store that you frequent regularly. Make sure to plan your sourcing outing in the most efficient method using a route planning tool like SpeedyRoute. If you have navigation systems like Garmin or TomTom then SpeedyRoute’s export feature supports GPX files as well as CSV files (GPX files can be used by some SatNavs such as TomTom and Garmin devices).