Out of Route Miles
Extra miles driven beyond the most direct route, often due to detours, fuel stops, or shipper requirements.
Out of Route Miles in Practice
Not Every Detour Counts
A driver choosing a longer route for personal preference isn't out of route mileage. It only counts when the deviation is required by the shipper, a road closure, weight restriction, or dispatcher instruction, not a driver's own routing choice.
Track Miles With GPS, Not Memory
ELD and GPS trip logs showing the planned route versus the actual route driven are the clearest way to prove extra mileage. Screenshots or mileage reports from a routing app back up a claim far better than an estimate.
It Should Be Billed Separately
Out of route miles are typically paid at the same per-mile rate as the load itself, added as a line item beyond the base mileage. Rolling it into the linehaul rate without flagging it means the extra distance often goes unpaid.
Out of Route Miles: What It Means and Why It Matters
Out of route miles are the gap between the most direct path from pickup to delivery and the miles a driver actually has to drive, often because a shipper requires a specific route, a bridge or road is closed, or a dispatcher routes around a low-clearance area. Because pay is usually calculated on practical or shortest-route mileage, those extra miles can quietly erode a driver's per-mile earnings unless they're tracked and billed separately. Recognizing when a detour counts as legitimate out of route mileage, rather than just a driver's own navigation choice, is the key distinction that determines whether it gets paid.
How Out of Route Miles Get Counted
Most rate confirmations and mileage systems price a load using practical or shortest-route mileage between pickup and delivery, calculated by a program like PC*Miler rather than actual odometer readings. When a driver has to deviate from that calculated route, whether because a shipper mandates a specific access road, a bridge is out, or a low bridge forces a detour, the difference between the calculated miles and the actual miles driven is the out of route mileage.
Not all extra mileage qualifies. A driver who takes a longer route by choice, to avoid traffic or find a preferred truck stop, generally can't bill that difference as out of route miles. The deviation has to be required by something outside the driver's control, and it usually needs to be documented and often pre-approved by dispatch or the broker.
A Practical Example
A load is priced on 400 practical miles between origin and destination. Partway through the run, a bridge closure forces a 35-mile detour that isn't part of the original route calculation. The driver notifies dispatch, documents the detour with a GPS log, and requests the extra mileage be added to the load.
If the rate confirmation pays $2.00 per mile, those 35 extra miles are worth $70 beyond the original linehaul rate, assuming the carrier or broker accepts the documentation. Without flagging the detour and keeping a record of it, that $70 usually just disappears into the trip as an unpaid cost.
Why It Matters for Owner-Operators
Every unpaid mile driven, whether from deadheading or an uncompensated detour, lowers an owner-operator's actual revenue per mile below what the rate confirmation implies. Out of route miles are easy to overlook because they often amount to a few dozen miles at a time, but across a year of loads with recurring detours, weight restrictions, or shipper-mandated routes, the unpaid total can add up to real money left on the table.
Common Mistakes
The most common mistake is not distinguishing between a personal routing choice and a genuinely required deviation. Only the latter is billable, and drivers who assume any extra mileage counts often get pushback when they submit a claim that isn't actually out of route mileage by the broker's definition.
The second mistake is failing to notify dispatch or the broker before or during the detour. Submitting a mileage discrepancy after delivery, with no heads up and no documentation showing why the route changed, makes it far easier for a broker to simply deny the claim.
Related Calculators
Related Dispatch Operations Terms
Carriers on Out of Route Miles
“A low bridge forced me 40 miles out of my way on a flatbed run. I sent my dispatcher the GPS log before I even finished the detour and got every extra mile paid.”
“I used to eat those extra miles without saying anything. Now I flag any required detour the moment it happens, and brokers pay it far more often than I expected.”