The broom hare body length ranges from 45–65 cm (18–26 in). Its tail grows to lengths of 5–10 cm (2.0–3.9 in). Its front legs grow from 10–20 cm (3.9–7.9 in) and the back legs can grow from 20–30 cm (7.9–11.8 in). The ears can grow to be as long as 18–20 cm (7.1–7.9 in). The fur of the broom hare is a mixture of brown and black, with very little white on the upper part of the body. The underside of the body is all white. The top of the tail is black, while the underside of the tail matches the body in being white. The ears are brownish-gray and are usually black-tipped.
It is restricted to the Cantabrian Mountains in northern Spain between the Serra dos Ancares and the Sierra de Peña Labra. This region is about 230 km (140 mi) from east to west and 25–40 km (16–25 mi) from north to south. It lives in mountains at elevations up to 2,000 m (6,600 ft), though it descends during the winter to avoid the colder temperatures and snow. Its preferred habitat is heathland, containing mainly Erica, Calluna, and Vaccinium, with much shrub cover of Cytisus, Genista, and Juniperus. It also inhabits clearings in mixed deciduous forests of oak and beech.