Northeast of Taos at the Taos Ski Valley, the Berminator Trail is a popular lift-accessed mountain bike route. The Berminator Trail is a 2.5 mile advanced flow trail with over 30 berms and some advanced stunts. It is accessed via the Pioneers Lift and is part of the Pioneers Bike Park. In addition to this lift-accessed downhill flow trail, there is the Gateway Trail which is a cross-country style uphill/downhill route.
If the Bike Park doesn't offer you enough riding make sure to head across the street to the Northside Trail System. There you'll find another trail system specifically signed for mountain biking.
After a long day of Taos mountain biking, try grabbing a long soak in one of the two primitive hot springs along the shores of the Rio Grande River. The Manby Hot Springs are located northwest of Taos and north of the Taos Airport. Also known as the Stagecoach Hot Springs, the trailhead is accessible from Tune Road across from the airport (lat: 36.512144 / long: -105.718169). The Black Rock Hot Springs are located northwest of Taos and west of Arroyo Hondo near the John Dunn Bridge. Also known as the the Hondo Hot Spring, the trailhead is located off CR8007/8005 on the west side of the John Dunn Bridge and then a half mile hike south down the trail (lat: 36.532597 / long: -105.712026).
To reach the mountain biking at Taos Ski Valley from Taos, head north from Taos Plaza on US64 for 4 miles. Turn right heading northeast on SR150 for 14.5 miles. Park at the ski resort base area.
Note: the Taos Ski Valley base are has been undergoing summer-time renovations. Make sure to call ahead to confirm that the lifts are actually running for lift-accessed mountain biking.