Sinclair Truck Stop Duncan

What they do. Who they serve.

Sinclair Truck Stop Duncan sits on US-81 in south-central Oklahoma, open around the clock for drivers running between the I-44 corridor and the Texas border. The paved truck lot handles overnight parking, and 24-hour diesel keeps you fueled whether you're hauling oilfield equipment or dry van loads through the Arbuckle region. With a 4.2-star rating across nearly 400 reviews, the stop has built a steady reputation among drivers who need a reliable fuel-and-park option in Duncan without the detours that bigger travel plazas demand. This is a straightforward stop best suited to drivers prioritizing quick fuel, safe overnight parking, and proximity to local oilfield service yards. US-81 connects northbound to Chickasha and I-40 or southbound toward Wichita Falls, making Duncan a natural midpoint for regional and cross-country runs alike.