The Blanc-Martel Trail: A Complete Guide to Hiking in the Gorges du Verdon
The Blanc-Martel trail is The most spectacular hike in the Gorges du Verdon — and one of the most legendary in France. This 16-kilometre trek deep within the Grand Canyon of Provence takes in tunnels carved into the rock, metal ladders and vertiginous viewpoints overlooking the turquoise Verdon.
Ranked amongst the most beautiful walks in France, it attracts thousands of walkers from all over the world every year. Ranked very difficult (with an elevation gain of over 500 m), this route is reserved for experienced walkers: it features exposed sections and unlit tunnels, and suitable equipment is essential.
From Castellane, adventure is within reach of walking boots. The Camping La Ferme de Castellane, 45 minutes away by car from the start (38 km via the D952), is your ideal base from which to prepare for this unforgettable day.
What is the Blanc-Martel trail?
Named in honour of the explorer Édouard-Alfred Martel — the first person to descend the Gorges du Verdon in 1905 — the Blanc-Martel trail is the iconic route through the Grand Canyon of Provence. This GR99 trail, 16 km long one way, runs along the bottom of the gorges from the Chalets de la Palud to the Point Sublime.
Ranked amongst the most beautiful walks in France, it attracts thousands of international walkers every year. Ranked very difficult With an elevation gain of over 500 metres, it includes exposed sections that require genuine hiking experience.
Key figures: 16 km one way · 6 to 8 hours’ walk · Very difficult · Elevation gain 500 m+
The iconic sections of the trail
- Tunnels carved into the rock — Dark, with windows onto the void, they are the strongest point of the trail (headlamp MANDATORY).
- Metal ladders A few metres of verticality to get through steep sections, hands on the rock.
- The Imbert Gap A fissure in the cliff offering a panoramic view of the 300m deep canyon.
- The Samson Corridor — The spectacular entrance to the gorges, cliff faces narrowed to a few metres.
- The Artuby Bridge — France's highest suspension bridge (182 m), visible from the path.
Preparing for your hike from Castellane
Access and logistics
The trail is a one-way route (16 km). There are two options for the return journey:
- The summer shuttle Point Sublime ↔ Chalets de la Palud, available from June to mid-September.
- Two cars — one at each end. From the Point Sublime, it takes 30 minutes to reach the campsite.
Since Camping La Ferme de Castellane, Les Chalets de la Palud are a 15-minute drive away. It is recommended that you set off before 9 am in July and August to avoid the heat and heavy traffic in the tunnels.
Essential equipment
High-top hiking boots (for rocky terrain), head torch with new batteries (absolutely ESSENTIAL for the tunnels), at least 2 to 3 litres of water, a full picnic, a windbreaker (it gets chilly at the bottom of the gorges), and sun cream. Please avoid flip-flops, sandals and light trainers at all costs.
In season: practical information
the path is open from’April to October. Closed in winter (November to March) due to the risk of floods and water releases from the Castillon dam. In July-August, some tunnel sections can be busy – set off early in the morning to enjoy the peace and coolness of the gorges.
Hundreds of hikers stay at La Ferme de Castellane campsite every year before setting off on the Blanc-Martel trail. A warm welcome, comfortable accommodation and a heated swimming pool.
Frequently asked questions about the Blanc-Martel trail
Is it possible to do the Blanc-Martel trail with children?
Not recommended for under 10s. From 10-12 years old, with adults and suitable equipment, it is feasible for sporty children.
How long does it take?
Count 5 to 7 hours of actual walking time. Allow a full day. Recommended departure before 9 am in July-August.
Is the path signposted?
Yes, marked with the GR99 trail (white and red). A head torch is compulsory in the tunnels (up to 500 m without lighting).
How to organise the return from Point Sublime?
Summer shuttle (June–mid-September) or two cars. From Point Sublime, 30 min by car to the campsite.
Which season?
May-June and September are ideal. Closed November–March (flood risk).
| Info | Details |
|---|---|
| Distance | 16 km one way |
| Duration | 6 to 8 hours |
| Level | Very difficult |
| Altitude difference | +500 m / -700 m |
| Period | April to October |
| From the campsite | 45 min by car (38 km) |
Le Camping La Ferme de Castellane is your ideal starting point for the Blanc-Martel trail. Just a 45-minute drive from Les Chalets de la Palud (38 km), our 3-star campsite welcomes you to an exceptional natural setting in the Gorges du Verdon.