The Rhone is not a canal and you must not treat it like one. I keep saying this to friends who have pottered up the Burgundy waterways and assume the river south of Lyon is more of the same. It is not. It is a wide, fast, commercial river with locks the size of cathedrals, and getting it wrong can ruin your day or worse.
We came down it in September 2024 in our own 13-metre motor cruiser, having crossed France from the Channel, and it was the most exhilarating and the most nerve-wracking week of the whole passage.
The shape of the river
From the confluence with the Saone at Lyon to the sea at Port-Saint-Louis-du-Rhone, the navigable Rhone runs about 310 km. Over that distance the Compagnie Nationale du Rhone tamed the river between 1952 and 1977 with a series of dams and locks. Going downstream you pass through roughly a dozen large locks before you reach Arles and the delta.
These are commercial locks, built for 1,500-tonne barges and push-tows, not for pleasure craft. They are huge. The most famous of them, Bollene, drops boats around 23 m in a single chamber, which made it one of the deepest navigation locks in the world when it opened. You float into a concrete canyon, the gates close behind you, and the water level falls away beneath you in roughly ten minutes while you hang on your lines and try to look calm.
The figures I keep pinned in the wheelhouse:
- 310 km navigable, Lyon to Port-Saint-Louis-du-Rhone.
- Around a dozen large CNR locks between Lyon and the delta.
- The Bollene lock drop of about 23 m, the deepest on the river.
- Locks built to 1952 to 1977 for commercial traffic, so 195 m long, 12 m wide.
- A current that, after rain upstream, can run several knots and is always with you going south.
The current is your friend going down
That last point cuts both ways. Heading downstream from Lyon, the current pushes you along and you make excellent time, sometimes 9 or 10 knots over the ground when the river is up. Heading upstream is a different story and a much harder, fuel-hungry slog. Plan your direction deliberately. Almost everyone who crosses France does the Rhone southbound for exactly this reason.
The flip side of a helpful current is that it complicates lock approaches and mooring. You arrive at a lock faster than your instincts expect, and you have to hold station against the flow while you wait for the green light and the green for big barges that get priority. Get on the VHF, work channel as directed by the lock, and be patient. The lock-keepers handle pleasure craft constantly and are professional about it, but you fit around the commercial schedule, not the other way around.
Sharing the water with freight
This is a working river. You will be passed by, and you will pass, large self-propelled barges and the occasional river cruise ship. Give them room, watch the wash, and never assume a loaded barge can stop or turn quickly. They cannot. In the locks you raft up or take your allotted spot, and you do as the eclusier tells you.
We had one moment near Avignon where I misjudged the gap to an overtaking hotel barge and got a fright from its wash that I will not repeat. Treat the Rhone with the respect you would give a tidal estuary, because in terms of energy it has more in common with that than with a sleepy canal.
The stops worth making
Despite the industrial feel of the navigation, the towns are glorious. Vienne, just south of Lyon, has a Roman temple and a quiet quay. Tournon and Tain-l'Hermitage face each other across the river with vineyards climbing the slopes behind. Then Avignon, where you can moor and walk into the walled papal city, and finally Arles with its arena and the start of the Camargue delta.
Below Arles the river splits and most cruisers heading to the Mediterranean turn off toward Port-Saint-Louis or Port Napoleon to step the mast back up and prepare for sea. That mast question is the one that catches sailors out, and I cannot stress enough how much planning it needs. If you are sailing rather than motoring, read air draft on the French canals before you ever leave the coast, because by the time you reach the Rhone your rig has been down for weeks.
Mooring on a river with few stops
The Rhone does not coddle you with moorings. Unlike a canal, where a free village quay turns up every few kilometres, the river has long stretches with nowhere sensible to stop, and the current rules out simply nosing into the bank. You plan your overnight stops in advance, because arriving tired at dusk hoping to find somewhere is how people end up alongside an exposed commercial wall with barge wash slapping all night.
The town ports along the way are the answer: Vienne, Tournon, Viviers, Avignon, Arles. Several are managed pleasure ports with pontoons, power and water, and in season they fill up, so a phone call ahead is wise. Between them you are committed, so set off each morning with a firm destination and a backup, and watch the time, because the current that helps you also means you cover ground faster than you expect and can overshoot a port before you have lined up the approach.
Reading the river and the weather
A river is a living thing in a way a canal is not. After heavy rain in the Alps or the Massif Central the Rhone rises and speeds up, and CNR can restrict or suspend navigation when levels get dangerous. Before and during the passage, watch the river-level and navigation bulletins, not just the marine forecast. We had one day held in port at Tournon waiting for a flood pulse to pass, and it was the right call.
The other factor is the mistral, the cold north wind that funnels down the Rhone valley. It can blow hard for days, kicking up a short steep chop on the wider lower reaches and making lock approaches and mooring awkward. It is more a nuisance than a danger to a sensible motor cruiser on the river, but it shapes when you choose to move, especially on the exposed final stretch toward the delta.
How this fits a bigger trip
For most foreign boats the Rhone is the final leg of a much longer journey. We reached Lyon by coming down the Saone and the Doubs by boat, which itself connects to the canal network that brought us all the way from the north. If you are weighing up the whole transit, I have laid out the route options and the realities in crossing France by canal from the Channel to the Med.
A few hard-won tips to finish. Carry plenty of fuel and water, because services for pleasure craft are sparser than on the canals. Fit fendering you trust, because lock walls are rough concrete and the surge is real. Monitor the weather and river-level bulletins, because a flood can shut navigation entirely. And give yourself a clear week with slack in it, not a tight schedule.
Done with respect, the Rhone is the grand finale a cross-France passage deserves. Done carelessly, it is the place things go wrong.
