Size Duel deck / Rivers, falls and long things
Rhine
Length: length, source to mouth
about 1,230 km (764.3 mi)
Some older books give 1,320 km; current encyclopedias agree on about 1,230 km.
Sources and checks
Checked 2026-10-21: Researched by Codex (two independent publishers, verbatim quotes); every counted quote re-found on its page by the server check (content-verify); scope and plausibility reviewed by Claude (AI build agent). Quotes are short passages from each source, in their original language.
“1230 kilometer”Store norske leksikon (in Norwegian): source, retrieved 2026-10-21; quote re-found by the server check“1230 km”Lex, Danish national encyclopedia: source, retrieved 2026-10-21; quote re-found by the server check
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