Borberg, Mountain summit in the Rothaar Mountains, North Rhine-Westphalia, Germany

Borberg is a 670.2 m high mountain in the Rothaargebirge range near Petersborn in the Hochsauerlandkreis, North Rhine-Westphalia. Its wooded summit rises about 2.5 km southwest of Petersborn, a part of Brilon, and the Brilon–Olsberg boundary runs over its western flank. On the upper southwestern slope lies a small ring wall enclosing the Borbergskirchhof and the Friedenskapelle Brilon.

The summit holds a small ringwork of roughly 1.75 hectares with an annex to the north, its gates drawn inward as pincer gates; the northern gate was excavated between 1983 and 1987. Finds are too few for firm dating, but comparisons suggest a pre-Romanesque, Carolingian-Ottonian structure of the 9th to 10th century. Within the rampart lie the foundations of a church with a three-apse choir, excavated 1983 to 1986, whose first building phases date to the 12th century; 16 graves explain the name Borbergskirchhof.

The name Borberg comes not from a castle but from a chapel, as a 1360 register of Geseke Abbey records a capella in Borghardes berghe near Brilon. Pilgrims still walk to the Friedenskapelle Brilon, built in 1923 on the ring wall, which keeps a wooden St Anthony figure dated 1618 and locally called Fickeltünnes.

The marked trails are easy to reach and climb at a steady pace that takes about an hour to the summit. The ascent suits hikers with average fitness levels and provides rest spots along the way.

The summit area holds a small ringwork of about 1.75 hectares with a northern annex, its gate cut inward as a so-called Zangentor; excavations in 1983–1987 uncovered and partly restored the northern gate. Finds are too few for firm dating, but comparisons suggest a pre-Romanesque, Carolingian-Ottonian structure of the 9th or 10th century.