There are still many people, even people on this forum, who insist that their expense is limited to the cost of gas. So if they have a car which gets 25 miles per gallon, that means 40 gallons of gas to drive 1000 miles and at $4 per gallon (easy arithmetic), that means it costs them $160 and the rest is profit. They are IMHO deluded. But in their minds, they are not working for free.
Presumably doing 50 locations represents at least 4 days of travel, so you either need to stay overnight enroute, or make sure that you calculate the round-trip distance each day to the beginning of that day's route and back from the end of that day's route. I am not inclined to do route shops where you stay overnight, because the cost goes way up. But, I have read messages from people who sleep in their cars overnight in Walmart parking lots and consider that to be just fine. I don't. The beauty of being an IC is that we can decide what work to take and what to decline, and how much compensation we require.
Shopping Southeast Pennsylvania, Delaware above the canal, and South Jersey since 2008