On the Coimbra to Santo Tirso route, travelers primarily have the option of traveling with the Alfa Pendular service, which is the main intercity train connecting various cities in Portugal. The Alfa Pendular operates at speeds of up to 220 km/h (137 mph) and typically completes the journey in approximately 1 hour and 45 minutes, depending on the number of stops along the way. This service offers comfortable seating and onboard amenities, making it a suitable choice for those looking to travel between these two cities. Alternatively, the Intercidades service may also be available on this route. This service is slightly slower, reaching speeds of around 160 km/h (99 mph), and usually takes about 2 hours to complete the trip, stopping at more regional stations. Both train options provide standard and first-class seating, with Alfa Pendular being the faster choice for passengers prioritizing travel time. Additionally, both services offer reasonable onboard refreshments and ample luggage space.