Caltrain vs BART: Which is Faster for the Same SF to Millbrae Route?

Choosing the most efficient way to travel from San Francisco to Millbrae can be quite a conundrum, given the two prominent options: Caltrain and BART. In this article, we'll explore the nuances of these two transportation modes and provide a comprehensive comparison to help you make an informed decision.

Speed and Consistency

Given that both Caltrain and BART have top speeds reaching almost 80 mph during certain segments of their routes, it might initially seem like the fastest option will be the most reliable. However, speed is only one factor to consider, especially when dealing with commuter lines that serve densely populated areas.

If you happen to be at the Caltrain station in San Francisco with a train just departing for Millbrae, it's often faster to take Caltrain. However, if you miss the train, the wait could be so long that taking BART might end up being quicker, as you can walk to the MUNI station, transfer to BART, and then board the Millbrae train once it arrives.

Reliability and Frequency

Likewise, the frequency and reliability of service can significantly impact travel time. In San Francisco, the SF Caltrain station is several blocks from downtown, and the trains don’t run as often as BART. Therefore, relying on Caltrain might mean waiting for a very long time, which could negate its speed advantage.

BART stations, on the other hand, run along a route that covers a significant portion of downtown San Francisco, including Embarcadero, Montgomery, and Civic Center. This proximity to key business and residential areas often means that BART is more accessible and convenient, particularly for those originating from the downtown corridor.

Travel Times and Costs

When it comes to specific travel times and costs, both systems offer competitive options:

BART: Assuming you depart from the Powell St BART station, the journey to Millbrae will cost $4.25 and take approximately 35 minutes on all trains. Caltrain: If you leave from the 4th-King SF Caltrain station, the cost is the same at $4.25, but travel time varies: ~18 minutes on a Baby Bullet express train or a limited stop train ~24 minutes on a full service train

It’s crucial to note that the Caltrain stations in San Francisco (4th-King, 22nd St) and the BART stations in San Francisco (Embarcadero, Montgomery, Powell, Civic Center, 16th St, 24th St) follow different routes. Depending on your starting point, you might have a shorter point-to-point travel time with Caltrain, but you could spend more time waiting for a train, especially during peak hours.

Commuter Considerations

Both Caltrain and BART are designed for commuter use, meaning they run at a stop-and-go pace, making them less suitable for those concerned with comfort during travel. New standard rail commute cars offer only basic amenities, similar to BART's cars, and seating can be scarce during peak travel periods.

Ultimately, the choice between Caltrain and BART should depend on your exact starting point in San Francisco. If you are in the downtown area along the Market Street corridor, BART would be the more convenient option. Conversely, if you are closer to Union Square or SoMa near the ballpark, Caltrain would be the fastest choice.

For those prioritizing speed and efficiency, Caltrain is your best bet, regardless of the time of day. However, the decision should also take into account other factors like starting location, personal comfort considerations, and the availability of seats.