Where does “ultramaraton” come from?

ultramaraton (Finnish) comes from Finnish maraton, from French marathon, from Ancient Greek Μαραθών, from Ancient Greek -ών, from Proto-Indo-European -ónts, from Hungarian önt, from Hungarian ön, from Hungarian ön- — sound, voice.

Ancestry of “ultramaraton”, step by step

ultramaraton traces back through two separate lines of ancestry.

via Finnish maraton

StepLanguageWordMeaning
1FinnishmaratonA marathon
2Frenchmarathonmarathon
3Ancient GreekΜαραθώνMarathon, a town northeast of Athens
4Ancient Greek-ώνforms words for places
5Proto-Indo-European-óntsDerives nouns denoting body parts
6Hungarianöntto pour; to cast; accusative singular of ön
7Hungarianönyou
8Hungarianön-self-
9Turkishönfront
10Ottoman Turkishاوكvoice (of human or animal); sound
11Proto-Turkicǖnsound, voice

via Finnish ultra

StepLanguageWordMeaning
1Finnishultraultralight; Short for ultraäänitutkimus
Every word from Proto-Turkic ǖn