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  1. Arapahoe County Open Spaces

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Spotlight

  1. The Open Spaces Department works to preserve natural and heritage areas, enhance neighborhood and regional parks and build and maintain trails. Since its inception, the program has built more than 73 miles of new trails, supported more than 160 park and trailhead projects, and conserved more than 31,000 acres of open space.
  1. ACOS-BIKE-TO-WORK-ARAPTRAIL-6-26-2019127square

    A roundup of regional bike trails in Arapahoe County

    Arapahoe County spans 805 square miles, and thanks to an interconnected system of trails, our residents can cover a LOT of ground Read on...
  2. ashaun2

    A Wish Comes True with Aurora's Inclusive Playground

    Red-Tailed Hawk Park is the culmination of a wish from a young Aurora resident named Ashuan, who wanted to be able to play alongside kids of all abilities in an environment where everyone felt included. Read on...
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Stay Engaged

  1. Learn more about our program and take a walk outside along your favorite trail or bring your children to play in a neighborhood park. Chances are you'll see examples of your open space tax dollars at work in Arapahoe County's great outdoors. 
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  1. News
  1. ACOS-BIKE-TO-WORK-ARAPTRAIL-6-26-2019127square

    A roundup of regional bike trails in Arapahoe County

    Arapahoe County spans 805 square miles, and thanks to an interconnected system of trails, our residents can cover a LOT of ground Read on...
  2. IMG_1068

    Partnership with Littleton Benefits School and Entire Community

    With a grant from Arapahoe County Open Spaces, the playground at Field Elementary in Littleton was completely renovated last year. It was an incredible transformation, made possible by the voter-supported Arapahoe County Open Space Sales and Use Tax. Read on...
  3. ACOS-MULE-GULCH-AG-7-24-2019017-squareweb

    Supporting Local Agriculture on the Eastern Plains

    Approximately two-thirds of Mule Gulch Open Space is devoted to agricultural use, primarily winter wheat production. Read on...
  1. ashaun2

    A Wish Comes True with Aurora's Inclusive Playground

    Red-Tailed Hawk Park is the culmination of a wish from a young Aurora resident named Ashuan, who wanted to be able to play alongside kids of all abilities in an environment where everyone felt included. Read on...
  2. pic_pics_on_plains_CP

    Pictures on the Plains treats residents to a (safe) night out

    Read on...
  3. CivicPlus_Aug 2020 Final-01

    Get your kids the new #YouthACOS Adventure Workbook today!

    Do you know kids who need something to do, have something to say, or want to learn more about Arapahoe County Open Spaces? Well, we have just the activity to get them into the Great Outdoors. Read on...
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  1. Calendar

September 2020

Sun Mon Tue Wed Thu Fri Sat
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  1. Sat Oct. 17

    17 Mile House Open House
    Read More

  2. Mon Oct. 26

    Open Space and Trails Advisory Board (OSTAB) Monthly Meeting
    Read More

  3. Sat Nov. 14

    17 Mile House Open House
    Read More

  1. Sat Dec. 5

    17 Mile House Open House
    Read More

  2. Mon Dec. 7

    Open Space and Trails Advisory Board (OSTAB) Monthly Meeting
    Read More
View All Calendars
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Contact

  1. Arapahoe County Open Spaces

    6934 S Lima Street
    Centennial, CO 80112

    Phone: 720-874-6540

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