1. Short title This Act may be cited as the Transit to Trails Act . 2. Transit to trails grant program (a) Definitions In this section: (1) Critically underserved community The term critically underserved community means— (A) a community that can demonstrate to the Secretary that the community has inadequate, insufficient, or no park space or recreation facilities, including by demonstrating— (i) quality concerns relating to the available park space or recreation facilities; (ii) the presence of recreational facilities that do not serve the needs of the community; or (iii) the inequitable distribution of park space for high-need populations, based on income, age, or other measures of vulnerability and need; (B) a community in which at least 50 percent of the population is not located within 1/2 mile of park space; (C) a community that is designated as a qualified opportunity zone under section 1400Z–1 of the Internal Revenue Code of 1986; or (D) any other community that the Secretary determines to be appropriate. (2) Eligible entity The term eligible entity means— (A) a State; (B) a political subdivision of a State (including a city or a county) that represents or otherwise serves an urban area or a rural area; (C) a special purpose district (including a park district); (D) an Indian tribe (as defined in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 )) that represents or otherwise serves an urban area or a rural area; or (E) a metropolitan planning organization (as defined in section 134(b) of title 23, United States Code). (3) Program The term program means the Transit to Trails Grant Program established under subsection (b)(1). (4) Rural area The term rural area means a community that is not an urban area. (5) Secretary The term Secretary means the Secretary of Transportation. (6) Transportation connector (A) In general The term transportation connector means a system that— (i) connects 2 zip codes or communities within a 175-mile radius of a designated service area