Madrid to El Burgo de Osma bus with AUTOMNIBUS INTERURBANOS S.A. (AISA)

AUTOMNIBUS INTERURBANOS S.A. (AISA) is a Spanish bus company with over 80 years of experience in road passenger transport. It operates a wide range of interurban and urban transport services, primarily within the Community of Madrid, including school routes and services for day centers. AISA also holds national concessions, connecting various regions across Spain, such as Madrid to Aranda de Duero and El Burgo de Osma, and Madrid to Fuente del Arco and Badalona. The company is committed to comfort, safety, and punctuality, and is actively working towards environmental sustainability by replacing older vehicles with more efficient electric buses. AISA offers amenities like reclinable seats, air conditioning, and charging sockets on its buses.

Alsa is the main provider of bus travel in Spain and a subsidiary of the UK’s National Express. It operates an extensive network of regional, national, and international routes, transporting more than 300 million passengers annually. Alsa’s modern fleet offers varying levels of comfort and amenities. The standard Alsa Normal buses include free Wi-Fi, onboard bathrooms, footrests, and entertainment. For a more premium experience, Alsa Supra, Alsa Eurobus, and Alsa Premium services provide enhanced comfort and luxury features.

BlaBlaCar is a French online marketplace for carpooling, connecting drivers with empty seats and passengers traveling to the same destination to share costs. Founded in 2006, it operates in Europe and Latin America, boasting 26 million active members. The platform also includes BlaBlaCar Bus, an intercity bus service. BlaBlaCar's name comes from its rating system for drivers' chattiness: \Bla\" for quiet, \"BlaBla\" for talkative, and \"BlaBlaBla\" for very chatty. The company aims to be the leading marketplace for shared travel, offering affordable and sustainable solutions by combining carpooling with bus journeys."