Smashburger Free Shake or Side

Get free shake or side from Smashburger on your birthday! Sign up for their rewards to claim this sweet birthday treat.

Location: All U.S.

Requirements: Sign up for Smashburger rewards program. Valid on your birthday at participating locations. Must show valid ID.

Status: Ongoing - Available anytime!

Verified Freebie

How to Claim This Freebie

Visit smashburger.com to access this offer.

Complete any required registration or request form.

Follow the instructions to receive your freebie.