The Santa Fe Rail-Trail offers a flat, if jolty, journey. It’s paved and accessible between the Railyard and Rabbit Road. Beyond that it’s unimproved.
A few steep climbs, arroyos (dried creek beds) from rain run-off cutting gulches across the surface and “goathead” sandspurs lurking in the soil produce plenty of hang-on-to-your-britches moments.
Some stretches, like near Rabbit Road, are particularly bumpy, making it mostly used by mountain bikers. Be warned, however, a little rain can change the trail in minutes and make for a soupy ride if you’re caught in it.