r/trains
r/trains is an AI & Machine Learning community on Reddit with 646,919 members, ranking #78 of 3,604 in AI & Machine Learning. The Home for all things "Iron Horse". Steam, Diesel, Electric, Pneumatic, Hydraulic. It doesn't matter, let them be seen! Post your Pics, Videos, Stories, experiences, etc. Keep it interesting, topical, NON trolling, and everything will be great. Alaska Railroad to Zambian Railroads, we want to see them all.
How big is r/trains?
Created in 2008, r/trains has had over a decade to grow and is a large community by Reddit standards. Within AI & Machine Learning it ranks #78 of 3,604 communities we track — the top 2.2% of the category by subscriber count. That puts it about 318× the median AI & Machine Learning subreddit, which has 2,036 members. It is a work-safe community with no 18+ flag on Reddit.
For scale, the largest AI & Machine Learning community we track is r/explainlikeimfive with 23,613,002 members — roughly 37 times the size of r/trains. Reddit itself launched in 2005, so a subreddit created in 2008 sits in the early wave of community building on the platform. Subscriber counts indicate reach, not activity — a large community can be quiet, and a smaller one busy. Open r/trains on Reddit to see how often people actually post before deciding whether it is worth joining.
| Members | 646,919 |
|---|---|
| Category | AI & Machine Learning |
| Rank in category | #78 of 3,604 |
| Created | 2008 |
| Category median size | 2,036 members |
| Content rating | Work-safe (SFW) |
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Subscriber counts come from the public Reddit API and are refreshed when this directory is rebuilt. Redditory is not affiliated with Reddit Inc.