Route 66 Motor Speedway
Amarillo, TX — 3/8 mile
DIRT OVAL
TRACK SCIENCE · USDA SSURGO
33.9%CLAY
12.3%SAND
53.8%SILT
Ustolls · Well drained
Pantex silty clay loam, 0 to 1 percent slopes
Balanced clay substrate — typical Midwest dirt; groove moves out as rubber builds.
High-bank 3/8 mile — add rear stagger vs flat. Sprint/micro +0.5–1"; LM/mod +0.25–0.5".
4101 SE Loop 335. High-bank 3/8 clay — ~20° turns, USMTS/modifieds, street stock, sprint specials. ~3,614 ft elevation.
MERCH STUDIO · PRINTFUL
Design Route 66 Motor Speedway merch
Custom race shirts, pit crew hoodies, and all-over print jerseys for Route 66 Motor Speedway fans and drivers. Search 725 dirt tracks for logo art, add your number, live mockup — no MyRacePass $72/yr or design fees.
Open Merch Studio →
YOUR CAR · YOUR PAGE · YOUR MERCH
Claim a free racer page, drop your schedule, and build race shirts with live Printful mockups — cash checkout, no design fees up front.
Build your own →