Get to Col de Vizzavona, on Route Nationale 193 midway between Ajaccio in the west and Bastia in the north. From the Col you take RN 193 to the north until you get to the intersection with D69 which you turn onto in the direction to Ghisoni. The road climbs to a pass among a barren scenery. Most of the trees in that region have fallen in an autumn storm a couple of years ago. After Ghisoni the road winds another 5km until you get to the intersection which leads us to Capanelle. This is a very narrow side road so don't miss it.
(Another way to get to Capanelle is to take the great corsican trecking trail GR20 from Vizzavona. The trail is marked in red and white and hard to miss. You need to hike some three hours until you are at Campanelle.)
From Capanelle the trail winds first through meadows (VERY beautiful in spring) and later ofer rocks towards Lac de Bastiani. Between here and the summit "ridge" is the hardest climb, because the trail crosses a field with lots of rocks and boulders.
Once you reach the ridge the remaining part is just a stroll to the top. The whole trip shouldn't take you more than two and a half hours.
Due to its central situation Monte Renoso commands beautiful views of all the island. You can see both coasts (east and west) and the northern Mountains Monte d'Oro, Monte Rotondo and Paglia Orba . The descent follows the ascent route.
Hiking gear and warm clothes.