The series of Chicago Food Bikes will be dispersed throughout the city through July 31st. View Full Caption Divvy

CHICAGO — Limited edition Chicago food-themed bikes and $15 discounts on annual memberships are just some of the ways the city plans to celebrate Divvy's 4th birthday.

Since 2013, Divvy has provided accessible bike transportation across the city, reaching 11 million rides in the past four years and expanding outside of Chicago, to Evanston and Oak park, adding over 100 new stations.

Partnering with local designer Justin Siddons, Divvy created a series of "Chicago Food Bikes": four bikes adorned with Chicago-themed food staples to celebrate Divvy's anniversary.

The Food Bikes include the classic Hot Dog (#HotDogDivvy), Deep Dish Pizza (#DeepDishDivvy), Jibarito (#JibaritoDivvy) and a celebratory birthday cake (#BirthdayDivvy). The bikes will be dispersed across the city through July 31st.

Riders who spot the bikes and post a photo on social media using the hashtag will be entered to win special prizes.

Additionally, Divvy is offering $15 discounts on annual memberships from June 26 - July 7 purchased with the code "BIRTHDAY".

Members of Blue Cross and Blue Shield of Illinois can receive their discount by searching "DIVVY" on blue365deals.com through August 15.