Members of Carlson Rezidor's Club Carlson loyalty programme can earn up to 30,000 bonus gold points for stays at participating hotels.
The "Extend Your Stay, Earn 30k" promotion is valid for eligible stays taken by March 29.
Members can earn 15,000 gold points for each two-night stay or 30,000 for each stay of three nights or more.
The offer is valid at over 1,000 Carlson Rezidor hotels worldwide including at the Quorvus Collection, Radisson Blu, Radisson, Park Plaza, Park Inn by Radisson and Country Inns & Suites By Carlson brands.
Members must register online for the offer at clubcarlson.com/30k and provide their membership number at reservation or check-in.
Bill Van De Laarschot, Carlson Rezidor's senior director of loyalty, said: "This promotion is our way of celebrating the start of another year of offering our members exceptional hotel experiences, enhanced services, and the ability to redeem and earn rewards at over 1,000 hotels worldwide."