The Gabrielino Trail is a United States National Recreation Trail that runs through the Angeles National Forest in Los Angeles County, California. Its western trailhead is near the NASA Jet Propulsion Laboratory in Altadena, California, and it runs generally east/west, with its eastern terminus at Chantry Flats, just north of Arcadia, California. It passes through three major watersheds and has an elevation gain/loss of 5-6,000' depending on the direction.  It consists almost entirely of singletrack trail in the wilderness areas to the West, North, and East of Mt. Wilson.

The REM is a light metro rapid transit system serving Greater Montreal, which as of the opening of the A4 branch in November 2025, consists of 19 stations spanning around 50km. See https://rem.info/en/map for more details.

This route follows as closely as possible the REM network from end to end, specifically the A4 and A1 branches from Deux Montagnes to Brossard stations, north to south. Public transit is pretty convenient to get to/from start and finish!