Sonic offers several flavor of iced drinks that come in different sizes as well. Route 44 is the largest size that they serve in a thirst quencing volume of 44 oz.
It is the biggest drink you can drink at Sonic. The sizes in ascending order are Small, Medium, Large and Route 44.
There are more than 3,500 Sonic restaurants in 44 states. Use their Find A Sonic tool to find the locations of your closest Sonic branches.
Their minimum hours of operation are 6 a.m to 10 p.m. Most Sonic locations are owned by independent franchisees. Check with your local Sonic for its hours.
Got more questions? Visit their Frequently Asked Questions to learn more.
Tip! To get the latest updates about Sonic Drive-In, just visit their Facebook page or follow them on Twitter @sonicdrivein.