2017 – Preliminary design and outreach: The voter-approved 2014-2019 Parks, Trails, and Open Space Replacement levy package included funding for the design and paving of the north segment and preliminary design of the south segment of the trail. King County Parks gathered feedback on the design plans for the north segment. KCP heard that connecting the trail to the Black Diamond Open Space was more important to the community than developing the north segment. 
 

2018 – Additional community engagement, project on pause: King County Parks continued additional community outreach and design work for the complete corridor. However, improvements to the 3.3-mile-long north segment were delayed due to the increased costs of building trails. 
 

2019 – Shifted focus to South Segment A: Based on feedback, King County Parks shifted focus to propose improvements to the two-mile-long gravel trail from SE Kent-Kangley Road to the Black Diamond Open Space Natural Area (South Segment A). This would then create a consistent-width trail with safe road crossings that would connect the north segment to the 1,240-acre Black Diamond Open Space. King County Parks proposes to utilize the funds allocated for the north segment to instead develop South Segment A.
 

2020 – Council approves funds for G2C Trail South Segment A: This proposal was approved by King County Council and included in the 2020-2025 Parks, Recreation, Trails, and Open Space Levy.
 

2021 – 2022 – Project begins: King County Parks selects an engineering firm, and the early design process begins. Of the 1,100 survey responses collected, 92 percent of respondents either somewhat supported or strongly supported the proposed development of an interim trail.