Monte Gennaro, Mountain summit in Lazio, Italy

Monte Gennaro is a limestone peak in the Monti Lucretili, in Lazio, reaching 1,271 metres. It is the highest summit visible from eastern Rome. Its slopes are wooded and rocky almost to the top, and on the eastern side lies a small karst plateau, the Pratone di Monte Gennaro. The summit offers a 360-degree view.

The Romans knew this peak as Lucretilis Mons and mentioned it in ancient texts from the time of poet Horace. Its role as a landmark stretches back to the classical period of ancient Rome.

The mountain held meaning for ancient Roman writers like Horace, who wrote about the views from nearby rural estates in the region. Visitors walking the slopes today can experience the same wide landscape that inspired classical poetry.

Hiking routes connect to the Rifugio Monte Gennaro shelter located roughly 500 meters west of the summit, offering a rest stop for walkers. Starting early allows time to reach the top and enjoy views while daylight holds.

The peak's name comes from the church of Sancti januarii in cima montis, of which only ruins remain a few metres from the summit antennas; it was linked to the cult of Saint Januarius or to the earlier worship of the two-faced god Janus. A former chairlift once connected Palombara Sabina with the summit.