From Nice, head towards Puget Thenier, turn right towards Vallée de la Roudoule, then towards Léouvé. Go to the end of the road (on Sundays, there is no problem with parking as you can park in the shuttle bus turning area).
The route is marked with a yellow line.
(S/E) From marker 240, head towards Col de Roua.
(1) At marker 250 at Col de Roua, turn right towards Haute Mihubi.
(2) Marker 253 at Haute Mihubi. Continue straight on to Col de Sui.
(3) Marker 257 at Col de Sui. Follow the signs for Barot via markers 256
(4) Continue until you reach marker 255.
(5). When you reach marker 255, turn left towards the summit of Dôme de Barrot. The ascent is direct (no more marked path).
(6) Descend via the same route to return to the car park (S/E).
