| Official Name: | Espinosa de los Monteros |
| Settlement Type: | Municipality and town |
| Pushpin Map: | Spain |
| Pushpin Caption: | Location in Spain |
| Leader Title: | Mayor |
| Leader Name: | José Carlos Peña Martínez |
| Postal Code Type: | Postal code |
| Postal Code: | 09560 |
| Area Total Km2: | 137.50 |
| Elevation M: | 762 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Coordinates: | 43.0667°N -35°W |
| Blank Info: | Espinosiego/a |
Espinosa de los Monteros is a municipality located in the province of Burgos, Castile and León, Spain, with a population of c. 2,100 inhabitants.
The village is spread over a large rural area at the southern outskirts of a mountainous area of the Cantabrian Mountains.
First settlements in the area date from the Bronze and Iron Age, but its modern settling and location officially started with the town charter given by Alfonso VI of León to repopulate it after its war destruction during the early 11th century.
It is home to the ancient Royal Guard of the "Gentlemen of the Chamber" since its founding in 1008 by Sancho García of Castile of the early local counts dynasty.
Espinosa is said to be the birthplace of Miguel de Espinoza's family name and origins, father of the philosopher Baruch Spinoza.
During Napoleonic Wars, The Battle of Espinosa de los Monteros, fought on 10 and 11 November 1808, resulted in a French victory under General Victor against Lieutenant General Joaquín Blake's Army of Galicia.
The main activities and industries have been related to military career services, stockbreeding mostly of cattle and as a regional hub of transportation due its geography, currently are intensified around dairy products and as modern commercial and services local center of its area and smaller neighbor communities of the wider valley. It is developing a small recreation tourism focused in its rugged and preserved mountain attractions. In winter, due to its heavy snowfalls, it runs a modest ski resort mostly catering to the neighbor coastal major cities day and weekend tourism.
Picón Blanco is a high mountain peak located in the municipality at an elevation of 1512 m. The road from Arredondo to the abandoned military base at the top is a climb in professional road bicycle racing, having been often used in Vuelta a Burgos and twice at Vuelta a España . It is 7.9 kilometres long at an average gradient of 9.1% (height gain: 721 m).
| Year | Stage winner | Race leader | |
|---|---|---|---|
| 2021 |  Rein Taaramäe | Rein Taaramäe | |
| 2024 |  Edward Dunbar |  Primož Roglič |