The original Hawaii Five-O ran for 12 seasons on CBS from 1968 to 1980, producing 281 episodes. The 2010 reboot continued the legacy for 10 seasons on CBS until 2020, delivering 240 episodes over its run. Together, both iterations span more than two decades of crime drama in the islands. This guide explains each era in detail, compares season counts and episode totals, and clarifies broadcast timelines to answer how long Hawaii Five-O ran in total.
Quick Reference: Key Dates and Episode Counts
The table below summarizes the essential timeline and volume for each era of the franchise. All figures reflect standard network seasons and are rounded to the nearest whole number where needed.
| Version | Years Aired | Seasons | Episodes | Network |
|---|---|---|---|---|
| Original | 1968–1980 | 12 | 281 | CBS |
| Reboot | 2010–2020 | 10 | 240 | CBS |
| Total | 1968–2020 | 22 | 521 | CBS |
Original Hawaii Five-O: 1968–1980
The original series launched on CBS in 1968 and remained on the air for 12 seasons. It concluded in 1980, producing a substantial catalog of 281 episodes. The show became one of the defining police procedurals of its era, establishing lasting templates for buddy cop storytelling and island-set crime drama.
Season and Milestone Breakdown
Each season of the original run generally followed a consistent annual cycle, with episodes airing in a largely uninterrupted weekly schedule. The following breakdown highlights season totals and notable continuity across the years.
- Seasons 1–5 (1968–1973): Established core characters and format, totaling roughly 100 episodes.
- Seasons 6–10 (1973–1978): Continued high-stakes cases and evolving serialized elements, adding another 100-plus episodes.
- Seasons 11–12 (1979–1980): Concluded long-running arcs while maintaining strong ratings through its finale.
The 2010 Reboot: 2010–2020
In 2010, CBS launched a reimagined version of Hawaii Five-O, retaining the core premise and setting while introducing a new cast and modernized storytelling. This reboot ran for 10 seasons and concluded in 2020, delivering 240 episodes over its lifespan.
Season Performance and Trends
The reboot adopted a more serialized approach in later seasons, with season lengths stabilizing around 25 episodes annually. Early seasons were slightly shorter, while mid-run seasons consistently met the 24–25 episode benchmark common to major network dramas.
| Reboot Season | Episodes | Aired Year(s) |
|---|---|---|
| 1 | 24 | 2010 |
| 2 | 23 | 2011 |
| 3 | 25 | 2012 |
| 4 | 22 | 2013 |
| 5 | 25 | 2014 |
| 6 | 25 | 2015 |
| 7–10 | 24–25 per season | 2016–2020 |
Comparisons and Context
When comparing the two versions, it is helpful to consider format, audience expectations, and production norms of their respective eras. The original series benefited from a weekly appointment viewing model and relatively lower budgets, while the reboot operated with modern effects, higher costs, and more serialized plotting.
Head-to-Head Snapshot
- Episode Volume: Original (281) vs Reboot (240)
- Run Length: Original (12 years) vs Reboot (10 years)
- Season Length: Original (≈23 per season) vs Reboot (≈24–25 per season)
- Time Between Finale and Revival: 30 years without new canon episodes
Why the Run Length Matters
The duration and consistency of both runs demonstrate durable audience interest in the Five-O concept. The original established a template, while the reboot updated the mythology for a new generation. Longevity on this scale influences syndication value, franchise extensions, and viewer expectations around closure and continuity.
Common Questions and Clarifications
Viewers often ask whether all seasons are complete, how cancellations and renewals affected the schedule, and whether both versions share continuity. Understanding the separate timelines helps clarify that the reboot exists as a companion piece rather than a direct continuation of ongoing storylines.
- Was there an official series finale for each version? Yes, both concluded with designed final episodes.
- Are episodes available for streaming? Both catalogs are widely available on major platforms.
- Did production halt at any point? The reboot experienced short breaks between seasons but did not suspend for years.
Wrap-Up Summary
In total, Hawaii Five-O across its original and reboot iterations ran for more than five decades of broadcast history, comprising 22 seasons and over 500 episodes. The original series anchored a 12-year run from 1968 to 1980, while the reboot extended the legacy for another 10 years, finishing in 2020. These spans reflect long-term network commitment, stable audience engagement, and enduring cultural relevance.