On National Ice Cream Day (7/17), Klondike – the iconic frozen treat brand – is celebrating their 100th birthday with a Klondike ice cream truck pop-up in New York City and is giving away FREE Klondike frozen treats! Additionally, fans can complete a decade-themed “What Would You Do for a Klondike?” challenge on-site for a chance to win a Klondike 100th birthday cake made by the “Cake Boss,” Buddy Valastro. For those not around, fans can also enter to win on Instagram now through 7/16. BONUS: one lucky winner also has a chance to win the Klondike Kard that unlocks free Klondike treats for 100 years!