Which came first? · Tricky
Which came first: the Boston Marathon or the Hoover Dam?
The Boston Marathon came first, in 1897 (first run). The Hoover Dam followed 39 years later, in 1936 (completed).
- First1897
The Boston Marathon
event · first runThe Boston Marathon, from 1897, is the world's oldest yearly marathon.
- Second1936
The Hoover Dam
landmark · completedThe Hoover Dam was finished in 1936, two years ahead of schedule.
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All which-came-first pairs · About Older Than You Think · Quiz games
Years from Wikidata, each checked against the item’s English Wikipedia article on 2026-10-18. A year stands for what its label says: a founding, a first patent, a premiere.