Episodes
221
4 seasons
221 episodes · 4 seasons · 165.8 hours to binge
221
4 seasons
165.8 h
6d 21h
6 days
non-stop
8.6/10
1,504 votes
Once runs to 221 episodes across 4 seasons, at roughly 45 minutes each. Watching every episode back to back is 165.8 hours of pure run time — that's 6 days and 21 hours without a single break.
More realistically, at two episodes a night you'll finish in about 111 days. That's 20.7 full 8-hour work days of screen time. Use the planner below to pick your own pace and get an exact finish date.
165.8 h
Pure run time
111 days
At 2 episodes/day
45 min
Per episode
Day 111: 100% done (221 of 221 episodes)
55.3
on average
41.4 h
on average
9,945
6 days non-stop
At 165.8 hours, Once is longer than 95% of every series tracked here — making it true marathon material. Within the Comedy genre the average is 48.0 hours, so Once sits above that.
Once is exceptionally well rated at 8.6/10 from 1,504 votes. With 165.8 hours of total run time it's a genuine long-haul marathon — plan accordingly before you press play.
All 221 episodes of Once add up to 165.8 hours of pure run time — that's 6 days and 21 hours non-stop.
Once has 221 episodes across 4 seasons, averaging about 45 minutes per episode.
At 1 episode a day it takes 221 days, at 2 episodes a day 111 days, and at a marathon pace of 8 a day just 28 days.
Once is rated 8.6/10 from 1,504 votes. Budget 165.8 hours if you want to watch the whole thing.
Episodes, seasons and rating come from TMDB (as of 2/12/2026). Once had no official per-episode runtime on file, so the 45 minutes shown are a genre-based estimate.
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