Through its Emerald Club, National Car Rental has launched its annual “Rent Rent Reward” promotion for Canadian customers. This promotion offers registered Emerald Club members one free rental day for every two qualifying rentals of a midsize or larger vehicle (for two or more consecutive days.)

According to Enterprise Holdings, Canadian members can earn up to 50 free rental days by participating in the promotion, which begins today and includes an earning period through Jan. 31, 2014.

With the introduction of a points-based system, Emerald Club members can earn bonus points for non-rental activities.

In addition to the points members earn for qualifying rentals (each is worth 300 points, with a free day awarded once a member earns 600 points), other opportunities to earn bonus points include referring up to 10 friends to join the Emerald Club and “Rent Rent Reward” promotion (300 points per referred individual upon completion of a rental), using Facebook social sign-in to connect on National’s “Rent Rent Reward” promotion site (50 points) and participating in the Emerald Reserve service at Emerald Aisle locations (one-time bonus of 25 points).

And members receive 300 bonus points when a referred friend becomes an Emerald Club member, registers for the promotion and completes a qualifying rental by Jan. 31, 2014, says Enterprise.

To become an Emerald Club member and take part in the “Rent Rent Reward” promotion, visit www.emeraldclub.ca/rent.