Sonic Drive-In (Interstate 35)
4.5 x (320+) • 1502.1 mi • American • Fast Food • Burgers • Chicken • Desserts • Comfort Food • $ • Info
2830 Interstate 35 Frontage Rd
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10:00 AM - 9:30 PM
7:00 AM - 9:30 PM
7:00 AM - 9:00 PM
7:00 AM - 9:30 PM
7:00 AM - 10:30 PM
8:00 AM - 10:30 PM
Featured items
Featured
- Hickory BBQ Crispy Tender Wrap$2.43An all-white meat crispy tender all wrapped up with hickory BBQ sauce, melty shredded cheddar cheese and crispy shredded lettuce in a warm tortilla.
- Cheesy Baja Crispy Tender Wrap$2.43An all-white meat crispy tender all wrapped up with zesty cheese sauce, melty shredded cheddar cheese and crispy shredded lettuce in a warm tortilla.
- OREO® Big Scoop Cheesecake BlastPriced by add-onsCreamy cheesecake soft serve mixed with OREO® cookie pieces and then topped with a big scoop of OREO® cheesecake.
- Buffalo Chicken Dip BitesPriced by add-ons
- Buffalo Chicken Dip Bites - Party Pack 20pc$18.29
- Orange Cloudsicle Slush Float$4.87The sweet and tangy flavor of orange cloudsicle slush loaded with orange vanilla flavor bubbles and topped with a sweet, creamy cloud of soft serve and even more orange vanilla flavor bubbles. Available in medium size only.
- Cheesy Bacon SONIC® Stack$7.06An all beef, seasoned patty stacked with crispy bacon and layered with two slices of melty American cheese, crinkle cut pickles, diced onions, tangy ketchup, creamy mayo, and served between two thick slices of Texas Toast.
- Cheesy Bacon SuperSONIC® Stack$8.65Two all beef, seasoned patty stacked with crispy bacon and layered with three slices of melty American cheese, crinkle cut pickles, diced onions, tangy ketchup, creamy mayo, and served between two thick slices of Texas Toast.
Combos
- SuperSONIC® Bacon Double Cheeseburger ComboPriced by add-ons • 100% (7)Bacon makes everything better - especially when it's as good as our SuperSONIC® Double Cheeseburger. We start with two quarter-pound, 100% pure beef hamburgers, two melty slices of American cheese, lettuce, fresh sliced tomatoes, with mayo and top it all off with crispy bacon. Even better with a Side and Drink included!
- SONIC® Cheeseburger ComboPriced by add-ons • 70% (10)What you see is what you get. A juicy, perfectly seasoned, quarter pound, 100% pure beef patty layered with melty American cheese, crisp, crinkle cut pickles, tangy ketchup, diced onions, creamy mayo, crisp lettuce, and hand sliced tomatoes on a golden, toasted bun. Straightforward and tasty, just the way it should be. Even better with a Side and Drink included!
- Crispy Chicken Sandwich ComboPriced by add-onsThe Crispy Chicken Sandwich served with your choice of Tots or Fries and a Medium Drink
- Footlong Quarter Pound Coney ComboPriced by add-ons • 50% (6)Want something filling that's also a great deal? Try SONIC's Footlong Chili Cheese Coney. A grilled hot dog topped with warm chili and melty cheddar cheese served in a soft, warm bakery bun. Even better with a Side and Drink included!
- SuperSONIC® Double Cheeseburger ComboPriced by add-ons • 50% (4)Double the SONIC® goodness with the SuperSONIC® Cheeseburger. Two juicy, perfectly seasoned, quarter pound, 100% pure beef patties that are layered with two slices of melty American cheese, crisp, crinkle cut pickles, tangy ketchup, diced onions, creamy mayo, crisp lettuce, and hand sliced tomatoes on a golden, toasted bun. Seeing double has never been tastier. Even better with a Side and Drink included!
- Jumbo Popcorn Chicken® ComboPriced by add-ons • 93% (43)Enjoy a crispy snack, or put together the perfect combo meal with our Jumbo Popcorn Chicken®, made with juicy all white meat. Even better with a Side and Drink included!
- Bacon Breakfast TOASTER® ComboPriced by add-onsBehold – melty cheese, crispy bacon all stacked up on thick Texas Toast and served with fluffy eggs. Sounds like breakfast heaven if you ask us. Even better with a Side and Drink included!
- French Toast Sticks ComboPriced by add-onsThree's a crowd, and four is a delicious bundle of breakfast delight. At least when it comes to our thick, golden French Toast Sticks complete with One maple-flavored syrup for dipping. Drink Included!
- Ultimate Meat & Cheese Breakfast Burrito™ ComboPriced by add-onsBreakfast doesn't get better than the all-new Ultimate Meat & Cheese Breakfast Burrito™ with crispy bacon, savory sausage, golden tots, fluffy scrambled eggs and melty cheddar cheese, all wrapped in a warm flour tortilla. Even better with a Side and Drink included!
- All-American Dog ComboPriced by add-onsTake a bite out of Americana with SONIC's Premium Beef All-American Dog. It's a beef hot dog made with 100% pure beef that's grilled to perfection and topped with ketchup, yellow mustard, relish and chopped onions and served in a soft, warm bakery bun. Even better with a Side and Drink included!
- Sausage Breakfast Burrito ComboPriced by add-onsKick start your morning with the same SONIC goodness of a simple breakfast burrito. Scrambled eggs, melty cheddar cheese and savory sausage, all wrapped up in a warm flour tortilla. Even better with a Side and Drink included!
- Chili Cheese Coney ComboPriced by add-onsWant something filling that's also a great deal? Try SONIC's Premium Beef Chili Cheese Coney. A grilled beef hot dog topped with warm chili and melty cheddar cheese served in a soft, warm bakery bun. Even better with a Side and Drink included!
Ultimate Drink Stop
Burgers
Chicken
Hot Dogs
Kids' Meals
All Day Breakfast
Snacks & Sides
Frozen Zone
Everyday Deals
What is the address of Sonic Drive-In (Interstate 35) in San Marcos?
Sonic Drive-In (Interstate 35) is located at: 2830 Interstate 35 Frontage Rd , San Marcos
Is the menu for Sonic Drive-In (Interstate 35) available online?
Yes, you can access the menu for Sonic Drive-In (Interstate 35) online on Postmates. Follow the link to see the full menu available for delivery and pickup.
What are the most popular items on the Sonic Drive-In (Interstate 35) menu?
The most ordered items from Sonic Drive-In (Interstate 35) are: Sonic Blast®, Mozzarella Sticks, Hand Mixed Classic Shake.
Does Sonic Drive-In (Interstate 35) offer delivery in San Marcos?
Yes, Sonic Drive-In (Interstate 35) offers delivery in San Marcos via Postmates. Enter your delivery address to see if you are within the Sonic Drive-In (Interstate 35) delivery radius, then place your order.
Can I get free delivery from Sonic Drive-In (Interstate 35)?
Delivery fees for Sonic Drive-In (Interstate 35) vary. Just enter your delivery address to see the delivery fee for your location. You could always get free delivery from Sonic Drive-In (Interstate 35) with Postmates Unlimited.
Can I pick up my order from Sonic Drive-In (Interstate 35)?
Postmates offers pickup from many restaurants in your city. To see if you can pick up your order from Sonic Drive-In (Interstate 35), add items to your cart and look for the ‘pickup’ option at checkout.
Can I schedule a delivery order from Sonic Drive-In (Interstate 35)?
Some restaurants on Postmates allow you to schedule a delivery to show up at your location when you want it. At checkout, look for the option to select a delivery time. If it’s there, that means you can schedule your delivery from Sonic Drive-In (Interstate 35).
