A Coruna is the prize at the southern end of a Biscay crossing, and for a lot of boats leaving France it is the first foreign landfall of the whole voyage south. The Torre de Hercules, the Roman lighthouse on the headland, is the thing you look for at the end of a couple of nights at sea, and the marina tucked behind the breakwater is one of the friendliest first stops in Europe. Getting there is the question.
The line on the chart
The direct route from north-west Brittany to A Coruna is the standard small-boat Biscay crossing. From Brest or Camaret it is roughly 330 to 360 nautical miles, depending on exactly where you depart and how far west you have to track to clear Ushant. Most cruising yachts cover that in two and a half to four days, which means two or three nights at sea.
If you start further east, say from La Rochelle or the Gironde, the distance grows to well over 400 miles and the geometry changes. From there many people prefer to break the crossing by hugging the French coast down to the Basque ports first, then making a shorter hop across the open bay. But the classic line, the one the pilot books are built around, is Brittany to A Coruna direct.
The reason that line works is the same reason it can bite. The full strategy for the passage, including the all-important shelf-edge sea state, is in my account of crossing the Bay of Biscay on a small boat, and I would not attempt the crossing without thinking it through.
Why the seabed matters more than the distance
Biscay is not dangerous because it is wide. It is dangerous because of where the continental shelf falls away. For the first 50 or 60 miles out of Brittany you are over shallow water, then the bottom drops into the abyssal plain, past 4,000 metres deep. On the Spanish side it shoals up again as you close A Coruna.
In deep water a big Atlantic swell is long and you ride over it. The trouble comes at the shelf edges, where a long ocean swell meets rising ground and steepens, sometimes into breaking seas, especially when the wind has swung and you have two wave trains crossing. So the planning question is not just "is the wind light" but "will I be crossing the shelf edge in a building cross sea." Time the departure and the landfall so the shelf-edge sections happen in settled conditions.
Picking the window
The settled spells in Biscay are longest from late May through July. That is when the Azores high tends to nudge north and give you two or three days of light to moderate northerlies or north-westerlies, which is exactly the downwind angle you want for a southbound crossing. September can also serve up good windows with the bonus of quieter Spanish anchorages, but the autumn depressions start to track in and the windows get shorter and less reliable as the month wears on.
You want a clean three-day forecast before you leave, and you want to understand what happens on day four if it goes wrong, because a Biscay crossing leaves you a long way from shelter in the middle. I never leave on a window that does not have a margin built into it.
The Schengen clock starts before you go
Here is the thing UK skippers forget: A Coruna is in Spain, which is in Schengen, and so is France. Your crossing does not reset anything. The days you spent working down through France count against the same allowance, and the Schengen 90/180 day rule for boaters gives you 90 days in any rolling 180 across the whole zone. If you dawdled through Brittany and the Atlantic ports, you can arrive in Spain with very little time left on the crew's clock. Plan the whole France-to-Spain run as one Schengen budget, not two countries.
The boat's paperwork should already be sorted from your departure, but if you are coming straight from the UK make sure you have worked through the sailing to France after Brexit checklist before you ever reach the start line, because the VAT and registration evidence travels with you all the way south.
Arriving at A Coruna
The approach is straightforward and well lit. The Torre de Hercules stands on the northern headland and the harbour opens to the south-east. There are two marinas in the city: Marina Coruna and the older Real Club Nautico, both central, both used to receiving boats fresh off a Biscay crossing. Visitor berthing for a typical cruising yacht runs to roughly 30 to 45 euros a night in season, varying by boat length and marina, which after two nights at sea feels like a bargain for a hot shower and a meal ashore.
A Coruna is a real Spanish city, not a marina village, so you can reprovision properly, find chandlery, and get the boat sorted before pushing on. Many people who cross from France treat it as the place to swap crew, since the airport has connections back to the UK and the rest of Europe.
Preparing the boat for the crossing
A Biscay crossing is short enough that people under-prepare, then regret it on the second night. The boat needs to be ready for two or three days at sea with no chance to put in for repairs. That means the standing and running rigging checked, the engine serviced, plenty of fuel because you may motor through the calm centre, and a self-steering setup you trust, whether that is a windvane or an autopilot with the power budget to run it for three days.
I carry enough diesel to motor a meaningful fraction of the distance, because the middle of the bay can go glassy for a day at a time in summer, and there is nothing more demoralising than rolling around in no wind 150 miles from land. Watchkeeping is the other thing to sort before you leave. Two-handed boats run a watch system that lets each person sleep, and you settle into it on the first night, not the second. Shipping is a real factor too: Biscay carries commercial traffic on the routes in and out of the French and Spanish ports, so AIS and a proper lookout earn their place.
The cost of the leg
The crossing itself costs only diesel and food, but the wider France-to-Spain run has a budget. Atlantic and Galician marina berths are among the cheapest in western Europe for a cruising yacht, roughly 25 to 45 euros a night, and anchoring in the Spanish rias is free. Set against the outside route as a whole, the crossing to A Coruna is the cheap part. The expensive part is the time and the boat preparation, both of which are worth every penny when you make a clean, well-found passage instead of a frightening one.
What comes next
A Coruna is a junction. From here you can carry on down the Rias Baixas, the deeply indented coast of Galicia that is one of the best cruising grounds in the Atlantic, or push south towards Portugal. If the Med is your goal, the natural continuation is down the Iberian coast, and I cover the staged version of that in France to Portugal in stages, which breaks the long run south into manageable legs.
Some people stop here for a full season and never regret it. The Galician rias have flat-water anchorages, cheap berthing, excellent seafood and a fraction of the crowds you find in the Med. A Coruna is a destination as much as a waypoint.
My honest take
The France-to-A Coruna crossing is the leg that frightens people out of the southbound voyage, and most of that fear is reputation rather than reality. The bay does not care about its reputation. It cares about the depression that is or is not crossing it during the three days you are out there. Pick a real window, respect the shelf edges, keep the crew's Schengen days in hand, and the crossing becomes what it was for me both times: a long, downwind passage that ends with a Roman lighthouse on the bow and a cold drink in a Spanish marina.
