R Line (RTD)
| R Line | |||
|---|---|---|---|
 | |||
 R Line tracks at the intersection of E Exposition Ave and S Sable Blvd prior to operation | |||
| Overview | |||
| Other name | I-225 Line | ||
| Owner | Regional Transportation District | ||
| Locale | Denver metropolitan area | ||
| Termini | |||
| Stations | 16 | ||
| Service | |||
| Type | Light rail | ||
| System | RTD Rail | ||
| Operator | Regional Transportation District | ||
| Ridership | 1,097,000 (FY2023, annual) | ||
| History | |||
| Opened | November 17, 2006 (G Line) | ||
| Closed | May 3, 2009 (G Line) | ||
| Reopened | February 24, 2017 (R Line) | ||
| Technical | |||
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge | ||
| Electrification | Overhead line, 750 V DC | ||
| |||
The R Line is a Regional Transportation District (RTD) light rail line that serves stations in Aurora, Denver, Greenwood Village, Centennial and Lone Tree, Colorado. The line began operation on February 24, 2017. During planning and construction, it was known as the I-225 Line. The line received its letter designation to reflect the letter Rs in "Aurora" and "RidgeGate". The line travels over newer and older portions of the RTD light rail system, and is the only line in the RTD rail system that does not serve downtown Denver. It is colored lime green on system maps.
The R Line's northern terminus is Peoria station in Aurora, and its southern terminus is Lincoln station in Lone Tree. As of 2026, service has been temporarily extended south of Lincoln to RidgeGate Parkway Station. This configuration will remain through the completion of the Downtown Rail Reconstruction Project, at which point the R Line terminus will return to Lincoln.