TTRPG DATA REPORT
How Long Do D&D Campaigns Last?
Using real campaign data, the average campaign runs six sessions across nearly three months. Longer games exist, but they are rare.
Published September 24, 2026 · 5 min read
By Greg H. & Greg W., co-founders of Archivist
← Back to GM GuidesThe Short Answer
The average D&D campaign runs six sessions across nearly three months. That is a group playing every week or two until it finishes an arc or, we suspect more often, cannot get back to the table (the scheduling monster, the true BBEG of TTRPGs). About 10% of campaigns reach 20 sessions, and only 1% make it to 50 or more.
For a comparison of one-shots versus longer-form campaigns, see One-Shots vs. Campaigns.
How Many Sessions Is a D&D Campaign?
HOW MANY SESSIONS ARE IN A CAMPAIGN
Among campaigns that made it to a second session, the average is six. Count single-session campaigns too and it drops to three. That first bar mixes planned one-shots with games that never got a second night, and the data cannot tell them apart. One-Shots vs. Campaigns compares the two.
How Many Campaigns Reach Each Session Milestone?
HOW FAR CAMPAIGNS GET
Still going Dropped offTop: share of all campaigns. On the stream: share of the prior milestone that kept going.
Swipe to see sessions 20 and 50 →
How Much Time Does a Campaign Take?
On the calendar, the average campaign (single-session games left out) ran 86 days from its first logged session to its most recent. That is nearly three months.
At the table, it is far less. A typical session runs about three hours (How Long Is a D&D Session?), so six sessions is roughly 18 hours of actual play spread across a season.
Why Do Most Campaigns Stop Around Six Sessions? Our Theory
This part is our read, not something the data proves. We think six is where the typical campaign stopped, not how long its story needed. The data cannot tell a finished campaign from a stalled one, so every number here includes campaigns that stalled.
Campaigns that reach a real ending usually run much longer. In our experience that is 20 to 50 sessions, and our own campaigns have run 25 to 45. Only 10% of campaigns get that far.
How to Plan a Campaign That Goes the Distance
If you are aiming for 20 sessions or 50, lock in a regular night first.
Write the first arc to finish by session six. You get a complete story no matter what, and a door into the next arc when the group wants more.
Then enjoy the build. Real data from our campaigns that reached 50 sessions: they averaged 209 Characters (not counting the party), 184 Locations, 121 Items, and 61 Factions.
Frequently Asked Questions
How many sessions does the average D&D campaign last?
The average D&D campaign lasts six sessions, based on Archivist data for campaigns that reached a second session. Counting single-session campaigns, the average is three. The sample spans TTRPG systems, not D&D alone.
How long does a D&D campaign last in months?
About three months. The average campaign in Archivist data ran 86 days from its first logged session to its most recent, which works out to roughly 18 hours of actual play at about three hours per session.
What percentage of D&D campaigns reach 10 sessions?
About 25% of all campaigns in Archivist data reach 10 sessions. 42% reach five, 10% reach 20, and 1% reach 50.
How many D&D campaigns reach 20 sessions?
About 10% of campaigns in Archivist data reach 20 sessions. Only 1% reach 50 or more.
Why do so many D&D campaigns end early?
The data cannot say why a campaign stops. Our theory is scheduling: most campaigns stall around six sessions rather than reaching an ending. In our experience, campaigns that do reach an ending usually run 20 to 50 sessions.
What about campaigns that only last one session?
30.6% of campaigns in Archivist data logged only one session. That group mixes planned one-shots with games that never got a second night, and the data cannot separate them. One-Shots vs. Campaigns compares the two.
METHODOLOGY
Campaign figures come from Archivist's August 19, 2026 database snapshot. Rates and distributions use non-archived campaigns with at least one logged session. Campaign length is the count of dated session logs. Duration is the span from first to most recent session.
"Average" on this page means the median, not the mean, because a handful of 50-plus-session campaigns would pull a mean upward. The six-session average covers campaigns that logged a second session. Include single-session campaigns and it is three. Milestone shares are cumulative sums of the campaign-length distribution, so they carry its rounding.
The 18-hour estimate multiplies the six-session average by the three-hour typical session from a separate September 9, 2026 snapshot.
Archivist began capturing sessions in 2025. Earlier play appears only when a group backfilled it with notes, so older campaigns can be truncated. We do not publish the underlying campaign count or any individual campaign data.
LIMITATIONS
This is a self-selected sample of Archivist users across multiple TTRPG systems, not a census of D&D players. A logged session is a product record, not proof that every real session was captured. Active-only filtering excludes archived campaigns from the rate calculations. Use the results as observed product data and a planning benchmark, not a forecast for any individual group.
See the parent report, The Data Behind D&D, for population definitions and related session statistics.
Questions, Commentary, and Citing This Data
Every campaign figure on this page comes from one database snapshot taken on August 19, 2026. If you are writing about the hobby and want a cut we have not published, ask us. We can usually run it.
QUESTIONS AND COMMENTARY
Email contact@myarchivist.ai with methodology questions, corrections, or a request for a specific breakdown. Journalists and researchers can pull logos, screenshots and background from the Archivist press kit.
CITING THESE FIGURES
Quote and republish anything here with attribution and a link back. The six-session average is the median of campaigns with two or more sessions. The 10% and 1% figures are shares of all campaigns. Suggested citation: Archivist, “How Long Do D&D Campaigns Last?” 2026, myarchivist.ai.
Keep the campaign record in Archivist
Capture sessions as they happen, then keep decisions, quests, and changing relationships connected across the campaign.