| Spiller Peak | |
| Elevation Ft: | 13123 |
| Elevation Ref: | [1] [2] |
| Prominence Ft: | 196 |
| Prominence Ref: | [3] |
| Isolation Mi: | 0.55 |
| Isolation Ref: | [4] |
| Parent Peak: | Babcock Peak (13,161 ft) |
| Country: | United States |
| State: | Colorado |
| Region: | Montezuma / La Plata |
| Region Type: | County |
| Range: | Rocky Mountains San Juan Mountains La Plata Mountains |
| Map: | Colorado#USA |
| Label Position: | bottom |
| Coordinates: | 37.4279°N -108.0873°W |
| Coordinates Ref: | [5] |
| Topo: | USGS La Plata |
| Easiest Route: | Southeast face |
Spiller Peak is a 13123feet mountain summit on the common boundary shared by La Plata County and Montezuma County in Colorado.[5]
Spiller Peak is located 15miles northwest of the community of Durango on land managed by San Juan National Forest. It ranks as the fifth-highest summit of the La Plata Mountains which are a subrange of the Rocky Mountains.[4] Precipitation runoff from the mountain's west slope drains to the Mancos River and the southeast slope drains to the La Plata River. Topographic relief is significant as the summit rises 3900abbr=offNaNabbr=off above the La Plata River in 2.5miles and 1700abbr=offNaNabbr=off above Owen Basin in one-half mile (0.8 km). Neighbors include Mount Moss 0.9miles to the north-northeast and Babcock Peak 0.43miles to the east.[4] The mountain's toponym has been officially adopted by the United States Board on Geographic Names,[5] and was recorded in publications in 1906.[6] J. Calvert Spiller was a topographer with the Wheeler Survey in the 1870s. He made the first ascent of Redcloud Peak in 1874 and also named it.[7]
According to the Köppen climate classification system, Spiller Peak has an alpine climate with cold, snowy winters, and cool to warm summers.[8] Due to its altitude, it receives precipitation all year, as snow in winter and as thunderstorms in summer, with a dry period in late spring.