The rock type is limestone and most of the routes climbed are sport climbing. The sport climbing begins with a 5.9 but the majority of climbs fall in the 5.10 to 5.12 range. Due to its proximity to major urban areas, Mount Nemo is one of the most popular climbing destinations in Southwestern Ontario.
Conservation Halton has implemented a ban on top roping to protect the ancient cedars along the escarpment.