Check your line voltage at your house. There is a lot of variance in house voltage. 110-125vac. Motors draw a minimum current and increases with load. your rating is for max load. So if you plan on a lot of deep cuts you might struggle. Smaller cuts will draw less.
Long story short 10awg should be good.
From southwire voltage calculator Results for Minumum Conductor Size Calculation 1 conductor per phase utilizing a 10 AWG copper conductor installed Cable, Conduit (non-Steel), & Direct Burial will limit the voltage drop to 2.45% or less when supplying 14 amps for 100 feet on a 120 volt single phase system.
https://www.southwire.com/ca/en-ca/calculator-vdrop
Nema motors are designed to work at the low range of 100v
Nema quote
An electric motor is electrically designed around the expected supply voltage with a tolerance. With NEMA (National Electrical Manufacturers Association) designs for small- and medium-voltage electric motors is +/- 10% voltage-maximum, with an allowable +/-5% frequency variation (ref.Jan 12, 2020