Cendant Hotel Group has announced the launch of a spring promotion designed to encourage enrollment in its TripRewards loyalty program.

TripRewards members in the United States and Canada who book through May 18 and stay through May 30 at a Cendant-franchised hotel are eligible for daily instant-win prizes and the chance to win enough TripRewards points to redeem 80 free hotel nights.

Grand prizes are an ESPN Classic Sports Hall of Fame Experience, including VIP tickets to the latest round of induction ceremonies; a Breeder’s Cup Weekend, including VIP passes to the championships; a eight-day Waikiki resort vacation, including airfare and car rental; and 500,000 TripRewards points, which could be redeemed for 90 $25 gift certificates or 80 free nights, among other awards.

TripRewards members also can win daily prizes, including DVD players and $25 gift certificates, by playing an online instant-win game at www.triprewards.com.