(626) 303-8790
250 W Duarte Rd Ste B
Monrovia,
CA
91016
34.0573
-118.0365
Neighborhoods: Lynwood, Montebello
What People Are Saying About Activesonics
The Editor
Contributor
Citysearch
In Short – Founded in 1953 as a hamburger-and-root-beer stand, this nostalgic eatery is known for its intercom ordering system and roller-skating carhops. While servers rarely roller skate anymore, the famous made-to-order, all-beef burgers and thick malts are still menu favorites. Other signature items include Toaster sandwiches (made with thick Texas toast), extra-long chili and cheese hot dogs and hand-battered onion rings and tater tots. Desserts include chocolate, vanilla and strawberry shakes and fresh fruit slushes.
Sonic Drive-in? Not in Monrovia
by jcresent8860
Sonic Drive-in does not exist at this address in Monrovia. I drove to this exact address and it is an industrial park, never has there been a Sonic at this location. The telephone number is not Sonic's also. I really love their food, great selection to choose from for a fast food place. Too bad there aren't more in Southern California. Believe me, if it was there, I'd know about it!
- Pros: Order from your car, no pressure, nobody waiting behind you.
- Cons: Only 1 in LA/Orange County
The Details on Activesonics
The Extras:
The Wacky Pack kids menu offers child-size burgers, grilled cheese sandwiches, corn dogs, hot dogs and chicken strips.
Save Time:
Order a prepaid My Sonic card online and use it like a debit card. More money can be added at any time.



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