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Highway 20 C-store

highway 20 c-store
220 10th St. NW.
Watertown, SD 57201
Store: 605-878-2020
Kitchen:  605-878-2024


  • Monday–Saturday: 5:00 a.m.–10:00 p.m.
  • Sunday: 7:00 a.m.–10:00 p.m. 
  • Kitchen open Monday - Friday 5:00 a.m. - 6:00 p.m.
  • Propane Fills available Monday - Saturday 8:00 a.m. - 5:00 p.m.

Fuel Grades

Other - E10, premium, other - E30,  other - E15, other - E85, other - #1 and #2 Roadmaster premium diesel, other dyed diesel, other dyed kerosene, DEF, other - #2 clear diesel


Roller grill, ATM, air, lottery, pizza, propane - cylinder/RV refilling, restrooms, hot drinks, fountain, deli, Wi-Fi, bakery items, snacks, cigarettes/tobacco, gift cards, gifts, postage stamps, F’Real, ice cream/frozen yogurt, soups, gourmet hot drinks, hot chocolate, Hunt Brothers pizza, Champs chicken

Payment Methods

Discover, Visa, American Express, Mastercard, Apple Pay, Fleet One, Cash, ACH, EBT, Cenex card, Samsung Pay, Voyager, Wex Fleet, Cabelas, Cenex gift cards, MudFlap