September is reunion month. Everyone is back, the group chat wakes up and someone types "shall we do something this weekend?". And then the usual happens: a few beers at the usual place.
Nothing wrong with that, but this year there is no need. September 2026 in Madrid is stacked: Formula 1 races inside the city for the first time, Fashion Week spills into the streets, the craft beer fair goes free and the Prado still gives away two hours every evening. Here are 12 things to do in Madrid with friends, sorted by group size and budget, with dates we actually checked and a final section on what is not worth it, because somebody has to say it.
One warning before we start, because guides get this wrong every year: Open House Madrid, the festival that opens buildings normally closed to the public, is not in September this year. It runs 6-8 November. If you see it in a "September plans" list, that list is from 2025.
Pick your plan in thirty seconds
| You are... | Budget | Best plans |
|---|---|---|
| 3-5 people | 0-15 EUR | Retiro boats, Gallery Weekend, Book Fair, free Prado |
| 6-10 people | 10-40 EUR | Team escape game, BeerMad, Mercado de Motores, Hotel Tapa Tour |
| More than 10 | 0-30 EUR | F1 fan zone, neighbourhood fiestas, tavern route, derby in a bar |
One rule that applies to all of them: from 8 people up, split the group. Nobody has ever seated twelve people on a Malasaña terrace on a Friday, and no plan survives half an hour of "where's Marta?".
Things to do in Madrid with a small group (3-5)
1. Rowing boats in the Retiro and a code hidden in the park
Cost: 6 EUR per boat on weekdays, 8 EUR at weekends. When: any afternoon, ideally from 6 pm.
The boats on the Estanque Grande rent in 45-minute slots and take up to 4 people, so a group of four pays 2 EUR a head. Book through the Madrid Móvil app and skip the queue. The trick is to go when the light drops and the Palacio de Cristal turns orange: in September, between 7 and 8 pm.
Before or after rowing, the park has a layer almost nobody looks at: an 18th-century astronomical observatory, tunnels, and a Crystal Palace with a geometric secret in its structure. El Código del Retiro (coming soon, in Spanish first) is a 75-minute outdoor escape game across five monuments in the park, and two phones can play it head to head.
2. Apertura Madrid Gallery Weekend (10-13 September)
Cost: free. When: Thursday 10 to Sunday 13.
More than 60 art galleries open their season at the same time, with extended hours. You do not need to know anything about contemporary art: the plan is to pick a neighbourhood (Salesas, Doctor Fourquet street in Lavapiés, Chamberí) and walk into five or six galleries, with the bonus that opening-night wine is a tradition. It is the 17th edition and still the cheapest way to see the Madrid that never makes the postcards.
3. The Autumn Old and Antique Book Fair (from 24 September)
Cost: free to enter, whatever you spend inside. When: 24 September to 12 October, on Paseo de Recoletos.
This is the 36th edition of the antiquarian and second-hand book fair that Libris runs every autumn under the plane trees of Recoletos. With friends, turn it into a game: everyone gets 10 EUR and 30 minutes to find the strangest book or the oddest handwritten dedication, then you vote at Café Gijón, right across the street. There are 19th-century engravings for less than the price of dinner.
4. The free Prado and the neighbourhood next door
Cost: 0 EUR for the museum, 15-25 EUR for dinner. When: Monday to Saturday 6-8 pm; Sundays 5-7 pm.
Two free hours of the permanent collection, with one rule: everyone picks a painting and gets three minutes to tell the others why. You end up in the Barrio de las Letras, which starts at the museum's back door, having dinner on Calle de las Huertas.
If the neighbourhood gets under your skin, our complete guide to the Barrio de las Letras comes out this week.
Original plans for groups of 6 to 10
5. An outdoor escape room, played in teams
Cost: less per person than a round of drinks. When: any day, once the sun goes down.
This is the plan that best solves "there are eight of us and nobody can decide". Split into two or three teams, one phone each, everyone starts at the same spot at the same time. The puzzles are in the street: dates on facades, letters on plaques, things you have to count in a square. First team to finish wins, and there is a leaderboard at the end.
El Código Cervantes is the one that works best with groups: 75 minutes through the Barrio de las Letras chasing a coded manuscript, along the streets where Cervantes and Lope de Vega were neighbours and hated each other until death, and where Quevedo bought Góngora's house just to throw him out. It ends ten metres from the terraces of Plaza de Santa Ana, which is where the teams argue about who cheated.
If you have never done one, our guide to outdoor escape rooms in Madrid explains how they work and how they differ from the indoor kind.
6. BeerMad, the craft beer fair (25-27 September)
Cost: free entry for the first time. When: Friday 25 to Sunday 27, Avenida del Planetario.
BeerMad turns twelve and moves house this year: out of the Pabellón de Cristal in Casa de Campo and into an open-air site next to Tierno Galván park, where the Mercado de Productores is usually held. With the move, the paid ticket disappears. Expect around 50 breweries with more than 200 styles, live music and tastings. It is a big-group plan by design: space, tables and everyone pays their own.
7. Mercado de Motores (12-13 September)
Cost: free. When: Saturday and Sunday, 11 am to 9 pm, at the Railway Museum.
A design, vintage and second-hand market set up among real locomotives, with food trucks and live music. Delicias station dates from 1880 and is worth the visit on its own. You can show up late, which with a group of eight is a competitive advantage.
8. Hotel Tapa Tour (17-27 September)
Cost: 8-14 EUR per tapa with a drink. When: eleven days, across 29 four- and five-star hotels.
The perfect excuse to walk into hotels you will never sleep in. Each one serves three or four signature tapas with a pairing, no booking needed, and the festival guide has official routes. With a group of six, the formula that works is three hotels in one evening and one tapa per head in each. Pricier than a tavern, but it is once a year.
What to do in Madrid with friends when you are more than 10
9. Formula 1 without a ticket: the fan zone in Callao (7-13 September)
Cost: free. When: the whole race week, in Plaza del Callao.
Grandstand tickets for the Spanish Grand Prix at the Madring circuit, between IFEMA and Valdebebas, run from 324 to 799 EUR, and general admission sold out in minutes. But race week turns the whole city into F1: Williams sets up a free fan zone in Callao with a full-size show car, simulators and reaction games (you need to register in their app), and there are official Madring zones with music and food. The race is on Sunday 13 at 3 pm: any bar with a screen on Gran Vía will be a party. And do not meet anywhere in the north-east of the city that weekend.
10. Neighbourhood fiestas, which are free and nobody uses
Cost: 0 EUR plus what you drink. When: Ciudad Lineal 5-14 September, Barajas 10-20 September.
The September fiestas are the ones left after La Paloma, with far fewer tourists. Free concerts, a live band, peña stalls and sandwiches at prices from another decade. A group of fifteen walks in without booking anything, and whoever gets lost finds you by following the music.
11. A route of century-old taverns, in teams and with no queues
Cost: 5-8 EUR per stop. When: weekdays from 7 pm; Saturdays are a contact sport.
Madrid has twelve restaurants and taverns over a hundred years old, some past three hundred. One has banned photos for decades; a political party was founded in secret in another; outside a third, an anarchist threw a bomb at the king. The rule of Madrid tapas is one thing per bar and move on, and with a big group it applies even more: three sub-groups, three different starting taverns, and you cross paths along the way.
De Taberna en Taberna (coming soon, in Spanish first) walks through eleven of those taverns with the story of each and what to order at the bar. No stopwatch: it is a walk with flavour.
12. A derby in a neighbourhood bar (20 September)
Cost: the price of a round. When: Sunday 20 September.
Atlético and Real Madrid play the first derby of the season on 20 September. Whichever side you are on, the plan is a neighbourhood bar with a TV, not a sports bar in the centre. If there are many of you, call ahead.
What is not worth it (or worth less than it looks)
- Fashion Week as a group plan. Mercedes-Benz Fashion Week Madrid runs 14-19 September, its 84th edition, and the shows in hall 14.1 at IFEMA are invitation only. This year it opens at the greenhouse of the Palacio de Cristal in Arganzuela and returns to Cibeles, so the genuinely open part is in the streets. Going to IFEMA "to see what's on" is a metro ride to look at a door.
- Paying an agency for a scavenger hunt if you are fewer than eight. Group activity packages start at around 33 EUR per person and things like "humor amarillo" are designed for 8 or more. Below that, the price per head balloons and someone with a whistle runs your afternoon. A team escape game in the street costs a fraction and the group stays in charge.
- Open House Madrid. As we said above: 6-8 November. Save that weekend, not this one.
- Meeting anywhere near IFEMA on 11, 12 or 13 unless you are going to the race.
- The Retiro on a Sunday at noon. The boat queue tops an hour and the park feels like an airport. Weekdays at 7 pm it is a different park.
Frequently asked questions
Which plans are free? Gallery Weekend, the Old Book Fair, the Prado from 6 to 8 pm, BeerMad, Mercado de Motores, the F1 fan zone and the neighbourhood fiestas. Seven of the twelve.
What is the best plan for a big group that cannot decide? The team escape game. It is the only one that turns "there are too many of us" into an advantage instead of a problem: more people, more teams, more rivalry.
How late does the metro run? Until about 1:30 am every night; after that the night buses (the N "búhos") run from Cibeles. With a big group it beats three taxis.
What will the weather be like? The first half of the month is still summer: highs of 28-30 degrees. The second half, 24-25. Anything that involves walking is better from 6 pm.
Getting the group out the door
The hard part of a plan with friends is not finding one: it is getting all eight to show up at once, having someone lead, and nobody drifting off halfway. DiscoverTheCity games are built for exactly that. They run on your phone, unlock as you reach each spot, start whenever you want and let you compete in teams with a leaderboard at the end. No guide, no booking, no minimum group size.
For September, two that fit this list: El Código Cervantes if you want rivalry and a finish in Santa Ana, and De Taberna en Taberna (once it opens) if you would rather end on a vermouth on tap. For ideas outside the calendar, there are 12 original things to do in Madrid that work all year, and a guide to Madrid in autumn for those staying longer.
The group chat is awake. All that is missing is the plan.
Cover photo: Rowing boats on the Retiro pond, by Javier Perez Montes (Wikimedia Commons), CC BY-SA 4.0.