Official way of keeping track of all your miles

GPS. As long as its turned on it measures distance

 

I write on paper, the odometer at each state line and wherever I stop.

 

I use Pro Miles, which comes free with DAT membership

 

Nothing official I know of other than your paycheck, if it lists miles driven during the pay period, or you own personal records. A rule of thumb if you stay busy is 2,500 miles per week, 10,000 miles per month, 100k-120k per year.

You can use Google Sheets, a free online spreadsheet, that is accessible by any internet device.

 

Notepad
Odometer beginning and ending

For instance. I drive a truck for the first time. Odometer reads 100k. When I'm done with the truck. It reads 350k.

I've driven that truck 250k.

If you switch trucks..You'll have a lot more readings to write down.

There's no need to keep track of daily miles or whatever when you're in the same truck.

And if your like me. Weekly miles. As my truck gets used on the weekends when I'm not working.