100-Acre Wood Bike Park is a partnership between SDMB, the City of Tucson (including the Office of Mayor Rothschild and Parks and Recreation) and Davis Monthan Air Force Base. The bike park will be funded through donations, sponsorships, grants, in-kind donations, and a whole bunch of volunteer labor. The total cost for the project is roughly $2.5 million. This includes the parking lot, park amenities, and central skills area including dirt jump park, pump tracks, expo area, and kids' area. It will take several years to raise all of the funds necessary to complete the project, so construction will be implemented in phases. After more than 2 years of planning and 800 volunteers hours of cleanup and site prep, Phase 1 will begin in 2019 and will consist of building approx. 7 miles of MTB-specific trail, including directional flow and XC trails. There will be no parking on site during Phase 1, and users are directed to park at nearby spots like Freedom Park Golf Links Park, and Veteran's Memorial Plaza. Phase 1 is expected to take 18-24 months to complete, and has an expected budget of $265,000.