The 20km de Montpellier takes place in late November, beginning at the Domaine d'Ô in Montpellier. Participants can opt for the primary 20 km solo event, or select a 10 km race. Alternatively, the 20 km can be completed as a two-person relay, with each individual running 10 km.
The 20 km course includes approximately 180 m of elevation gain over its entirety, meaning it is not entirely flat. The initial 10 km segment features more descent than ascent, with 74 m gained and 121 m lost. The latter half requires more effort, incorporating an additional 106 m of gain and 48 m of loss. Lions Club Languedoc is the organizing body, lending the event a local club character rather than the scope of a large urban marathon.