Triple J’s Hottest 100 broadcast usually runs for around 7–8 hours from start to finish.

How long does it actually go?

  • The countdown plays 100 songs in full, plus presenter chat, news, ads, and breaks, so the total broadcast is much longer than the raw music time.
  • For example, the 2023 Hottest 100 music alone added up to about 5 hours 28 minutes , and that was noted as the shortest running countdown on record, meaning the full day’s broadcast was longer once you include everything around the songs.
  • In practice, you can expect it to take most of the day on air, typically kicking off late morning and wrapping up early evening (Australian time), depending on that year’s exact schedule.

So if you’re planning a Hottest 100 party, treat it as an all‑afternoon event rather than a quick few‑hour listen.

TL;DR: Triple J Hottest 100 goes for roughly 7–8 hours on air , with about 5.5 hours of actual songs in a recent year.

Information gathered from public forums or data available on the internet and portrayed here.