Via Alpina Blue D54

The Via Alpina Blue D54 is a 14.6 km point-to-point trail in the southern French Alps, gaining 453 m and dropping 1,313 m from Bousiéyas to St-Etienne-de-Tinée. Rated difficulty II (moderate), it crosses two alpine passes at the edge of Mercantour National Park, combining open ridge walking with a descent through one of the region's finest medieval villages.

About the Via Alpina Blue D54

Stage D54 of the Via Alpina Blue Trail links the remote shepherding hamlet of Bousiéyas with the lively mountain town of St-Etienne-de-Tinée over a distance of 14.6 km. It sits in the final arc of the Blue Trail's French passage — a sequence of stages tracking south through the Maritime Alps before reaching Monaco on the Mediterranean coast.

The day begins at Bousiéyas, a cluster of stone buildings at 1,854 m on the fringe of Mercantour National Park. From here, D54 follows the iconic GR 5 waymarks (white-red paint blazes) upward to the Col de la Colombière at 2,238 m — the highest point on the stage — before a long, rewarding descent brings you through the beautifully preserved village of St-Dalmas-le-Selvage, over a secondary pass at Col d'Anelle, and down into the Tinée valley.

At 4 hours 10 minutes of moving time at a steady pace, D54 is one of the more manageable stages in this part of the Blue Trail, though the sustained 1,313 m of total descent demands respect: tired knees are a real risk by early afternoon. The difficulty rating of II (on Via Alpina's five-point scale) reflects mixed terrain — solid compacted paths for the most part, with some exposed switchbacks between Bousiéyas and the Colombière and loose gravel on the Col d'Anelle approach.

The stage traces a centuries-old transhumance corridor used by shepherds driving their flocks between summer pastures in the high Alps and winter grazing in the Tinée valley. The route is exceptionally well marked and maintained by the Fédération Française de la Randonnée Pédestre (FFRandonnée), which manages the GR 5 through this section. As of 2026, new signage has been installed between St-Dalmas-le-Selvage and the Col d'Anelle, eliminating a previously confusing junction at the village edge.

Route Overview & Stages

The stage divides naturally into four sections, each with a distinct character. The first carries the day's entire elevation gain; the long middle and final sections are almost entirely descending. St-Dalmas-le-Selvage, roughly halfway, is the natural rest and resupply break.

Highlights & Points of Interest

• Bousiéyas hamlet (1,854 m) — A scattering of stone buildings at one of the highest permanently inhabited sites in the Alpes-de-Haute-Provence. The hamlet sits adjacent to the celebrated Route de la Bonette — at 2,802 m, the highest paved road in France — making it accessible by road for hikers who want to begin D54 without thru-hiking the preceding stage.
• Mercantour National Park boundary — D54 departs the core protection zone of Mercantour National Park as it climbs from Bousiéyas toward the Colombière. Created in 1979, the park covers 685 km² of high-Alpine terrain and shelters ibex, chamois, wolves, and the bearded vulture — all of which have been reported regularly along this section of the GR 5.
• Col de la Colombière (2,238 m) — The high point of the stage. On a clear day, the ridge delivers a sweeping panorama stretching from the Écrins massif roughly 100 km to the north to the faint blue shimmer of the Mediterranean 70 km to the south — one of the finest viewpoints on the entire southern Blue Trail segment.
• Alpine meadows above St-Dalmas-le-Selvage — The descent from the Colombière passes through lush balcon pastures thick with alpenrose, purple gentian, and arnica in July and August. Marmots are almost guaranteed between 1,900 m and 1,600 m; the colonies here are accustomed to walkers and often observed from under 10 m.
• St-Dalmas-le-Selvage village (1,490 m) — One of the most architecturally intact medieval villages in the southern Alps. The tight cluster of stone arcades, carved lintels, and sun-dial facades has been classified as a heritage site. The village has a small grocery, a seasonal café, and a drinking-water fountain — treat this as your mid-stage resupply and rest point.
• Chapelle St-Sébastien — Inside St-Dalmas, this 17th-century Baroque chapel contains well-preserved ex-voto frescoes commissioned after plague outbreaks — a surprising cultural detour on what is otherwise a wilderness route. The chapel is typically open from 09:00 to 12:00 in July and August; a donation box sits at the entrance.
• Col d'Anelle (1,739 m) — A quieter, grassier pass than the Colombière, the Anelle offers views south into the populated Tinée valley and east toward the Italian border's Argentera massif on cloudless afternoons. The col is also a good place to spot paragliders launching from the slopes above St-Etienne-de-Tinée.
• St-Etienne-de-Tinée (1,147 m) — The stage endpoint is a genuine mountain town with a Thursday market, several restaurants, a pharmacy, ATM, and a well-stocked outdoor gear shop. The bell tower of its 18th-century church dominates the square where most hikers arriving from the Col d'Anelle pause for a recovery coffee before sorting accommodation.

Best Time to Hike the Via Alpina Blue D54

The hiking season for D54 runs from late June through early October. Snow lingers on the Col de la Colombière until late May most years, and the path between Bousiéyas and the pass can carry firm névé into early June requiring trekking poles for balance. By early October, the first autumn snowfall can close the col with little warning — Météo-France mountain forecasts are essential if hiking after 10 September.

July brings the wildflower peak — the meadows below the Colombière are carpeted with alpenrose and purple gentian — but also the highest footfall on the GR 5. The trail through St-Dalmas-le-Selvage can feel crowded on weekend mornings in high season, and gîtes book out months in advance.

August is the most reliable weather window, with valley temperatures in St-Etienne-de-Tinée regularly reaching 28–32 °C and high-pressure systems dominating for days at a time. Early starts — before 07:00 — are strongly recommended to avoid the afternoon convective thunderstorms that typically build over the ridge after 14:00. These storms can be severe and fast-moving; the Col de la Colombière offers no shelter.

September is the single best month for this stage in 2026. Summer crowds thin sharply after 25 August, temperatures settle to a comfortable 18–24 °C in the valley and 10–15 °C on the passes, and the autumn light gives the limestone ridgelines a warm amber tone in late afternoon. Thunderstorm frequency drops relative to August, the marmots are particularly active fattening for hibernation, and gîte bookings are far easier to secure on short notice.

Early October is viable but marginal. Larch and beech colour the lower slopes beautifully, but night temperatures on the Colombière can drop below −5 °C. Check the Météo-France bulletin for Alpes-Maritimes mountain zones and plan a weather-window departure rather than a fixed date.

Practical Information

Accommodation

Bousiéyas has a single gîte d'étape accommodating around 20 hikers in dormitory bunks at approximately €18–22 per night; half-board (dinner and breakfast) runs €45–52. Reservations are essential in July and August — the gîte fills by early spring for peak-season weekends. Wild camping is not permitted within the Mercantour NP core zone near Bousiéyas; dispersed bivouac is allowed more than 1 km from park boundaries and watercourses once the trail exits the core zone.

St-Dalmas-le-Selvage has a small gîte communal (municipal bunkhouse, approximately €15–18/night) well-suited to thru-hikers arriving mid-stage who want to split D54 across two days. St-Etienne-de-Tinée offers the widest choice: two gîtes d'étape (€18–24), a hotel (€55–85 per room), and a municipal campsite open June–September (€8–12 per pitch, electric hookups available). Note that new pitch capacity was added to the St-Etienne campsite in 2025, making walk-in availability slightly easier outside peak weeks.

Getting There & Back

The nearest international airport is Nice Côte d'Azur (NCE), 90 km south of St-Etienne-de-Tinée. Regional transport is operated by the ZOU! Alpes-Maritimes network: the line 770 bus runs from Nice Gare Routière to St-Etienne-de-Tinée in approximately 2 hours 45 minutes, with four departures per day in summer. A single ticket costs €3 under the Alpes-Maritimes flat-fare scheme — one of the best-value mountain transport deals in France.

To reach Bousiéyas for the stage start, take line 770 to St-Etienne-de-Tinée and then hire a local taxi (approximately €35–45 one way) or arrange a lift through the Bousiéyas gîte, which occasionally organises a shuttle for guests arriving the previous night. Alternatively, hiking stage D53 (Larche → Bousiéyas, 22 km) delivers you to the hamlet the evening before if you are thru-hiking the Blue Trail. There is no direct public bus service to Bousiéyas village. By car, the D2205 from Nice through the Var valley reaches St-Etienne-de-Tinée in about 2 hours; parking is free in the town square.

Permits & Fees

No permit is required to hike D54. For the majority of its 14.6 km, the route passes through the peripheral zone of Mercantour National Park rather than its strictly regulated core zone (réserve intégrale). There is no entry fee for the national park. Dogs must be kept on a leash within the park boundary throughout the stage. Drone flights require prior authorisation from the park administration and are not permitted for recreational use. If you plan to bivouac, the restriction against camping within 1 km of watercourses and within the core zone applies only to the first 1–2 km of the stage near Bousiéyas.

Gear & Packing List

At 14.6 km with 1,313 m of total descent, D54 rewards light packs — your knees will feel every unnecessary gram during the long drop from the Colombière to the valley floor. If you are thru-hiking the Blue Trail and carrying overnight gear, the Zpacks Arc Haul Ultra 60L is a proven ultralight choice that keeps multi-day load under control without sacrificing frame support on extended descents. For those tackling D54 as a standalone day stage, the Osprey Aether 65 handles a full day's kit with excellent hip-transfer — useful when your legs are burning on the final drop into St-Etienne-de-Tinée. Hikers keeping base weight under 8 kg will find the Deuter Aircontact Lite 45+10 hits the ideal balance of capacity, weight, and ventilation for this terrain.

Essential items to pack for D54:

• Navigation: IGN 3637OT (Haut-Var / Haut-Cians) at 1:25,000 covers the full stage. GPS waypoints are freely downloadable from the Via Alpina website. The trail is well-signed with GR 5 white-red blazes throughout, but the junction above St-Dalmas can confuse in mist.
• Water: The Col de la Colombière has no reliable water source on the ascent. Fill a minimum of 2 L at Bousiéyas and top up again at the fountain in St-Dalmas-le-Selvage. The final 3.5 km from the Col d'Anelle to town is dry.
• Clothing layers: Temperatures on the Col de la Colombière average 8–12 °C in summer with regular gusts exceeding 40 km/h. A wind shell and a light insulating mid-layer are mandatory. Sun protection is critical — exposed terrain above treeline covers roughly 8 km of the route. Our guide to the best ultralight backpacks of 2026 includes a complete packing checklist for multi-day Alpine stages.
• Food and fuel: The descent from Bousiéyas to St-Etienne-de-Tinée burns approximately 900–1,100 kcal for a 70 kg hiker at moderate pace. Read our guide on how many calories you need hiking a full day before packing lunch. St-Dalmas-le-Selvage's small grocery stocks trail basics if you need to resupply mid-stage.
• Trekking poles: Strongly recommended. The 1,313 m total descent concentrated in roughly 9 km of trail will fatigue quads and stress knee joints even on good surface. Poles reduce lower-limb load by up to 25% on sustained descents.
• Emergency: European mountain rescue number is 112. The PGHM (Peloton de Gendarmerie de Haute Montagne) based in Nice covers this area. Mobile signal is absent on the Col de la Colombière and limited between the col and St-Dalmas; service returns reliably in the village on Orange and SFR networks.

Similar Trails You Might Like

If the Via Alpina Blue D54's mix of high passes, medieval villages, and long valley descents through a French national park appeals to you, several nearby routes offer comparable rewards. The Tour du Mont Blanc is the definitive Alpine circuit, delivering the same col-to-village rhythm over 170 km through France, Italy, and Switzerland. For something more demanding, the GR 20 Principale in Corsica is France's most technical long trail — harder underfoot but equally spectacular on clear days. Geographically close to D54, the GR 105 through the Queyras shares the same rugged southern-Alpine character with fewer walkers. For a gentler literary alternative through very different French landscapes, the Chemin de Stevenson through the Cévennes retraces Robert Louis Stevenson's famous 1878 journey. Longer-distance walkers might also consider the GRV Glorioso Rimpatrio dei Valdesi (325 km), a Franco-Italian route carrying a rich layer of Waldensian history through mountain terrain similar to the southern Via Alpina. If the Balkan alpine style of D54 — remote villages, open ridges, sparse infrastructure — is what draws you, the Theth to Valbona hike in Albania delivers the same wilderness feel with even fewer fellow walkers on the trail.

Frequently Asked Questions

What is the best time of year to hike the Via Alpina Blue D54?

September is the best month in 2026. The crowds that peak in late July and August thin sharply, afternoon thunderstorms become less frequent, and temperatures are comfortable at 10–15 °C on the high passes and 18–24 °C in the valley. The autumn light on the limestone ridges is exceptional. The full season runs from late June, when the Col de la Colombière is typically snow-free, to early October before the first serious autumn snowfall closes the pass.

How difficult is the Via Alpina Blue D54?

Via Alpina rates it difficulty II on a five-point scale, equivalent to a moderate mountain hike. The 453 m of ascent to the Col de la Colombière is steady but not technical. The greater challenge is the 1,313 m of total descent over roughly 9 km: rocky switchbacks above St-Dalmas-le-Selvage and loose gravel near the Col d'Anelle demand good ankle stability and balance. Trekking poles are strongly recommended. The trail suits fit beginners wearing proper hiking boots.

How far is it and how long does it take to hike the Via Alpina Blue D54?

The stage covers 14.6 km from Bousiéyas to St-Etienne-de-Tinée. Via Alpina's official moving-time estimate is 4 hours 10 minutes, assuming a steady 3.5 km/h on ascent and 4 km/h on descent without stops. Allow an additional 45–60 minutes for a break at St-Dalmas-le-Selvage and time at the Col de la Colombière viewpoint. Most hikers complete the stage in 5–6 hours door to door.

Where do hikers sleep on the Via Alpina Blue D54?

Overnight options sit at both ends of the stage. Bousiéyas has one gîte d'étape at around €18–22 per night for a dorm bunk, or €45–52 for half-board. St-Etienne-de-Tinée offers two gîtes d'étape, a hotel, and a municipal campsite (€8–12 per pitch). St-Dalmas-le-Selvage has a small municipal bunkhouse (€15–18) suited to splitting the stage over two days. Advance booking is essential for July and August; September typically allows short-notice reservations if you phone ahead.

Are permits required to hike the Via Alpina Blue D54?

No permit is required. The route passes through the peripheral zone of Mercantour National Park for most of its 14.6 km, which carries no entry fee and requires no advance registration. The core zone restriction near Bousiéyas prohibits bivouac camping within 1 km of watercourses, but this applies only to the first 1–2 km of the stage. Dogs must be kept on a leash within the park boundary. Drones require prior written authorisation from the park administration and are not permitted for recreational use.