Getting Around Spain With a Dog: Trains, the Metro, and City-to-City Days
Mochi knows the carrier means we're going somewhere. The second I unzip the P808
Soft Sided Pet Carrier and set it open on the floor, he's in it, turned around, facing out, ready before I've even found my shoes.
We move around Spain a lot. A week in Madrid, then down toward Seville, then a stretch on the coast. For a Toy Poodle who weighs less than my laptop bag, the logistics stay gentle once you know how each system handles dogs. Here's how getting around Spain with a dog goes for us — day to day, and city to city. (For the slower version — morning walks, café work, the beach question — I wrote up the daily routine of a digital nomad with a dog in Spain separately.)
The carrier does most of the work
For a small dog, the carrier unlocks almost everything. On Spanish trains and the metro, a small pet inside a proper carrier travels free and skips most of the restrictions that apply to bigger dogs. Renfe sets the carrier limit at 60 x 35 x 35 cm and the small-pet weight at 10 kg. Renfe
Mochi clears both with room to spare. The Beat P808 soft carrier folds down to about that footprint, slides under the seat in front of me on the train, and rides over one shoulder through a metro turnstile. On a hot platform I open the top panel so he can put his head out and watch the world. That's the whole move for small dogs in Spain — one bag, used everywhere.
Trains: the easiest way to cross the country
Renfe runs two kinds of trips that matter for a nomad with a dog.
The first is Cercanías, the commuter network around cities like Madrid, Barcelona, and Valencia. This is the relaxed one. Dogs ride free, there's no weight limit, and a leash is enough — no carrier required even for bigger dogs. Renfe These are the trains I take for an airport run or a day trip out of the city, and Mochi just walks on beside me on the P805 hands-free leash.
The second is long distance — AVE high-speed and Larga Distancia. Here a small pet in a carrier travels with a pet ticket and doesn't take a seat. On a Básico or Elige fare you pay a €10 supplement; on a Prémium fare the pet rides free. Renfe Mochi goes under-seat in the P808 for the whole ride. I bring the P801 collapsible water bottle for the platform wait, a silent chew toy so he settles, and I skip his breakfast on travel mornings so the motion doesn't bother his stomach.
If your dog is bigger, Spain has opened up more than it used to. Larger dogs up to 40 kg can now ride select AVE services on the Madrid lines to Barcelona, Zaragoza, Málaga, Granada, Alicante, and Valencia, traveling in the seat beside you. Renfe You'll need a leash and muzzle, a declaration of responsibility, and the dog's vaccination record, and you arrive about 40 minutes early to collect a travel kit with a seat cover and floor mat. Renfe Look for the pet icon when you book.
The metro: mind the rush-hour windows
City metros are where people get caught out, so this is worth knowing before you tap in.
A small dog in a carrier rides the metro free, any time of day, in Madrid and Barcelona both. Mochi in the P808 has never triggered a single rule. The Local
Bigger dogs out of a carrier are where the time windows kick in. In Madrid, dogs travel off-peak on a short lead (50 cm) and muzzle, in the last carriage, using the lift rather than the escalator. The restricted weekday windows are roughly 7:30–9:30am, 2–4pm, and 6–8pm, and they lift entirely in July and August. Travelnuity Barcelona works the same way with its own peak windows — mornings around 7–9:30am and evenings 5–7pm on weekdays through most of the year, open all hours on weekends and holidays. Dogs Barcelona
So if your dog rides in a bag, none of this touches you. If your dog walks, plan the metro around the middle of the day and the evening, and treat weekends as free.
Taxis, short hops, and the bits in between
Not every leg is a train. Some days it's a taxi from the station to the flat with luggage and a dog, and that's usually a quick "¿puedo con el perro?" to the driver — most say yes for a small dog in a carrier, and I keep Mochi zipped in the P808 on my lap so it's an easy yes.
The walking bits between stations are where the small gear earns its place. The P803 waste bag dispenser stays clipped to the leash so I'm never digging for one on a crowded pavement, and the 9903 hip pack carries the travel-day essentials — treats, train ticket, phone, his folded water bottle — so I'm not opening the main bag at a turnstile with a dog in the other hand. If you're kitting out for a first trip, the pieces I reach for live together in the pet travel bundle.
Arriving somewhere new
The first hour in a new Spanish city with a dog is always the same small ritual. Drop the bags, clip on the leash, and walk one slow loop of the block so Mochi can read the new neighborhood. There's a fountain somewhere, a waste bin on the corner, another dog owner doing their own evening loop who nods like we've met. By the second day the route is ours. By the third it feels like we live there.
That's the part that makes moving around Spain with a dog work. The trains and the metros are just rules to learn once. The rest is Mochi deciding, block by block, that the new place is fine.
Summary: Getting around Spain with a dog is straightforward once you know each system. Small dogs in a carrier (under 10 kg, 60 x 35 x 35 cm) ride trains and metros free with almost no restrictions. Renfe Cercanías commuter trains are the most relaxed — free, no weight limit, leash only — while AVE and long-distance trains take a small pet on a €10 supplement, or larger dogs up to 40 kg on select Madrid routes with paperwork. Madrid and Barcelona metros allow bigger dogs only outside weekday rush hours, on a short lead and muzzle. Plan walking dogs around midday and evenings, treat weekends as open, and keep a small dog in the carrier to skip the rules entirely.
