When is the next Caltrain? (minimal webapp)
I was frustrated with the existing caltrain websites / apps, so I made a super minimalist one to answer the actual question I have: how long until the next train? If you're in SF it grabs the next southbound trains, otherwise, the next northbound.
When is the next Caltrain? (minimal webapp) launched on August 6, 2025 with 42 votes, #502 of 8,530 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
When is the next Caltrain is a minimal web app that answers a single question: how long until the next train arrives. Built by someone frustrated with existing Caltrain websites and apps, it automatically detects the user's location and shows the next southbound trains for those in San Francisco or northbound trains elsewhere. The tool strips away unnecessary features to focus solely on providing immediate departure information.
written from the facts on this page · September 2026
Does a similar job
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Trains.fyi – a live map of passenger trains in the US and Canada2023 · trains.fyi · ▲503Hey all! My train the other day was delayed and I got curious where they all were at any given time, so I built a map and figured I'd share it.




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