New Mexico State Road 21

New Mexico State Road 21 (NM 21), is a 34.447-mile-long (55.437 km) state highway located entirely in Colfax County in the state of New Mexico. The road starts in the center of the town of Cimarron at the Intersection of U.S. Route 64 (US 64) and Collision Avenue. It goes southward as South Collision Avenue. Leaving town limits it is called the Santa Fe Trail and passes by the well known Philmont Scout Ranch when it junctions with Cito Road and Conejo Road. On the road you can view the Tooth of Time and drive by the Villa Philmonte mansion and the Seton Memorial Library.

State Road 21
NM 21 highlighted in red
Route information
Maintained by NMDOT
Length	34.447 mi[1] (55.437 km)
Major junctions
West end	US 64 in Cimarron
East end	I-25 Bus. / US 56 / US 412 in Springer
Location
Counties	Colfax
Highway system
State Roads in New Mexico Interstate US State Minor Scenic ← NM 20 NM 22 →

The road continues to drive along Philmont property until it reaches Rayado. In Rayado, the road turns south and continues past rustic ranches until it reaches a Y-intersection with the old NM 199 where NM 21 heads east towards the ranches at Miami. It then goes 1.5 miles (2.4 km) east, turns north for 1.7 miles (2.7 km) where it joins County Road 6 from Rayado. About 9 miles (14 km) eastward of that intersection it goes underneath Interstate 25 (I-25) near exits 412 and 414. The road goes immediately into the town of Springer, where it is called West 4th Street, which is where it reaches its end at Maxwell Avenue.