PORTLAND, Ore. – The bike-share program Biketown turns a year old today and you can ride for free for three hours, courtesy of a donation from Metro.

To ride free, go to the Biketown Facebook page to get the promo code and information on downloading and using the bike-share program app.

It’s a highlight of a week of events and giveaways to celebrate the Biketown birthday.

In the past year, 75,521 Biketown riders have cycled more than 602,000 miles on over 313,000 trips. Most of the bike users are casual riders, meaning riders bought a single trip or day pass.

More than 3,500 people have signed up for annual memberships, paying a monthly fee of $12 to use the bikes as much as they want or need.