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  1. Trails
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  1. Arapahoe County Open Spaces

    Arapahoe County Open Space will not host the 17 Mile House Fall Festival in 2019. Please consider attending a fall event hosted by the following organizations: the Littleton Historical Museum, the Four Mile Historic Park, the Denver Botanic Gardens at Chatfield or the Town of Parker.
Current Projects
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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 or improved 214 miles of trail, participated in more than 150 park and trailhead projects, and conserved more than 33,000 acres of open space. 
  1. spotlight 1

    Your Parks, Trails and Open Spaces

    Explore Arapahoe County properties Open Spaces. See your parks and trails
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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. Calendar

November 2019

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  1. Sat Nov. 16

    17 Mile House - Open House 17 Mile House Open House 09:00-12:00 -
    Read More

  2. Mon Dec. 2

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

  3. Sat Dec. 7

    17 Mile House - Open House 17 Mile House Open House 09:00-12:00 -
    Read More

  1. Mon Feb. 24

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

  2. Mon Apr. 27

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

  3. Mon Jun. 22

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

  1. Arapahoe County Open Spaces

    6934 S Lima Street
    Centennial, CO 80112

    Phone: 720-874-6540

    All County Offices

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