Length: 97 miles.
Project kicked off in 2005, service for three stations (Albuquerque/Los Ranchos/Sandoval) started in 2006, first phase (Belen to Santa Fe, eight stations) completed in 2008, second phase complete in 2017 with fifteen stations operational.
Total capital cost: around $385 Million dollars. That’s Million…with an M. Operational deficit of about $20 Million/year that is now covered by sales tax.
Folks liked it enough to pass the sales tax to cover operating losses, being viewed positively by both locals and the tourism industry. A horizontal complement to the vertical Sandia Peak Tram (4000’ elevation change, 2.7 mi length, two stations, completed in two years, opened 1966).
https://en.wikipedia.org/wiki/New_Mexico_Rail_Runner_Express