Chilean law has drawn the line between these two valleys since December 1994. Decree 464, enforced by the agriculture service SAG, places the Maipo Valley in the Central Valley wine region and the Casablanca Valley in the Aconcagua region. That legal map also matches the practical one: Maipo is a day on Santiago's outskirts, Casablanca a day on the road to the Pacific.
How are Maipo and Casablanca different?
The decree lists 13 areas in the Maipo Valley, starting with Santiago itself and including Pirque, Puente Alto and Buin to the south. Vineyards inside the city are a real option: Cousiño Macul receives visitors at Avenida Quilín 7100 in Peñalolén, a Santiago commune. Casablanca is simpler on paper, a single valley whose limit is the commune of the same name.
The clearest legal contrast is the optional geographic term a label can carry. Article 5 bis lets wines with at least 85% of their volume from qualifying areas add "Andes", "Entre Cordilleras" or "Costa". Santiago, Pirque, Puente Alto and Buin are on the Andes list, the other nine Maipo areas are Entre Cordilleras, and the Casablanca Valley is on the Costa list. The version on WIPO Lex, current to a 2018 amendment, shows the decree also governs label terms such as Reserva and Gran Reserva.
What the wineries pour reflects that split. The Casas del Bosque Aromas tour tastes a Sauvignon Blanc, a Chardonnay, a Pinot Noir and a Syrah. Concha y Toro builds its Pirque visit around the Casillero del Diablo cellar, with tasting upgrades from its own labels.
| Maipo (example: Concha y Toro, Pirque) | Casablanca (example: Casas del Bosque) | |
|---|---|---|
| Region under Decree 464 | Central Valley | Aconcagua |
| Optional coastal or mountain term | Andes (Pirque, Puente Alto) | Costa |
| Winery's own time from Santiago | About one hour | About one hour, via Ruta 68 |
| Example visit | CLP 50,000, 120 minutes (cheapest listed) | CLP 38,000, about 50 minutes (Aromas tour) |
| Published tour times | Not listed on the overview page | Daily 10:30, 12:15, 15:00, 16:30 |
How do you get to each valley without driving?
For Casablanca, Metro de Santiago's intermodal page lists a Paravías interurban service to Casablanca from the Pajaritos interchange on Line 1, alongside the coast buses to Valparaíso and Viña del Mar. Paravías' fare, timetable and drop-off point in Casablanca could not be confirmed, and an estate may not be walkable from where the bus stops, so ask the winery when you book how guests arriving by bus reach the estate. Casas del Bosque, which puts itself about an hour from Santiago via Ruta 68, takes tour bookings at turismo@casasdelbosque.cl.
Casablanca also combines with the coast. Buses from Pajaritos continue to Valparaíso, so a morning tasting can lead into an afternoon in the port; our Valparaíso day-trip guide covers which of its lifts are running.
For Maipo, Concha y Toro's wine tourism site describes Pirque as an hour from Santiago and promotes travelling there by Uber. Cousiño Macul is the only one of the three examples with an address inside Santiago; its site lists a premium tour, a vineyard bicycle tour and a garden visit, but prices did not display when read.
Can you drive yourself after a tasting?
Only if you do not drink. Chile's Tolerancia Cero law, in force since March 2012, sets 0.3 grams of alcohol per litre of blood as "under the influence" and 0.8 g/l as "drunk", according to CONASET, the national road-safety commission. Those thresholds leave little room: both visits in the table include a four-wine tasting.
If one person in your group will drive, rental documents matter too. The UK Foreign Office says drivers must carry their passport and proof of tourist status in the vehicle, and the US Embassy notes that rental insurance may be harder to get without an international licence. Urban motorway tolls around Santiago are covered in our TAG tolls guide.
What a wine day costs two adults
Two adults on the two example visits pay CLP 100,000 at Concha y Toro (2 x 50,000) or CLP 76,000 at Casas del Bosque (2 x 38,000), a difference of CLP 24,000 before transport. The Concha y Toro visit is longer, 120 minutes against about 50, so the price per hour is lower in Pirque. Upgrading both people to Concha y Toro's Marqués de Casa Concha tasting at CLP 80,000 each brings the Pirque total to CLP 160,000.
Transport can reverse the comparison. The bus fare to Casablanca and ride-hail fares to Pirque were not published on the pages read, so price both legs in your ride-hail app and on the bus operator's counter the day before. If the round trip to Casablanca costs more than the CLP 24,000 tour saving, and you are not continuing to Valparaíso, Maipo is the better-value day.