Warrenton Oil Co. has grown into one of the most ambitious and fastest-growing oil companies in its Missouri footprint powered by its FastLane convenience store mark. Debuting in St. Charles, Missouri, in 1972, the company expanded westward when it bought the Columbia operations of Davis Oil, with later acquisitions and new station start-ups continuing. At retail, the chain offers expansive foodservice, delis, car washes, restaurants and hotel locations.

For benchmarking purposes, store counts are as of Jan. 1, 2023.

Headquarters:Truesdale, Missouri
No. of Stores:55
Rank Last Year:121