The main reward for completing the DunkinRunsOnYou.com survey is a coupon or validation code that can be exchanged for a free donut or another promotional item, depending on location and current offers. The reward is not cash but a food or beverage incentive meant to encourage repeat visits. Offers may vary by region and time, so customers should check the details printed on their receipt. These rewards make the survey appealing, as customers receive something tangible in exchange for sharing feedback.