Colorado turned 136 on Wednesday.

Colorado Day marks the day the Centennial State was first recognized on Aug. 1, 1876.

To recognize Colorado’s birthday — which is typically celebrated on the first Monday of every August — all Colorado State Parks are free to visitors on Aug. 6.

Admission fees will be lifted and no vehicle passes will be required, according to the Colorado Department of Natural Resources. Visitor centers will be closed.

Frontier Airlines is also celebrating Colorado Day by offering an air fares sale for Colorado customers. A one-way flight to Albuquerque can be purchased for $49 and one-way fare can be purchased for other select locations in the lower 48 states, according to a news release from the airline.

Tickets must be purchased by 9:59 p.m. on Aug. 3. Visit frontierairlines.com for more details.

Jordan Steffen: 303-954-1794, jsteffen@denverpost.com or twitter.com/jsteffendp