MileageWise will calculate the distances from client to client simultaneously. The system calculates optimum routes that are the most ideal for your mileage log in order to for it to be IRS-proof.
You can overwrite the distance for each trip by clicking on the distance column.
If you would like to calculate a distance for a specific trip permanently with a different distance in the future, then you can set it with the 'Overwriting calculated distances' feature. You can specify the distance between two specific clients (instead of the program's calculated distances). You can read more about this in this article.
Download the MileageWise mobile app now on the App Store or get it on Google Play, start tracking your miles, and save thousands on your taxes!