I've GMed 6 campaigns that lasted long enough to deserve the label.
My first AD&D campaign, played as teenagers, the game went to around 15th level (but with some variation, due to the henchmen-half-XP rule plus multi-classing rules) in around 2 years of play.
My next two AD&D campaigns, with the same players, went to 7th (one was an Oriental Adventures game, around 1 year of play; the other was a thief campaign that was played on-and-off for a year or two).
Since then, I have GMed for my uni group, although few of us have actually been at university in the past 20 years.
The first two were Rolemaster campaigns: one went to the mid-20s (1990-97); the next to level 27 (1998-2008).
Since 2009 I have been GMing a 4e campaign. It has currently just reached 27th level, and I anticipate it will finish in the next 6 months or so.
My first AD&D campaign, played as teenagers, the game went to around 15th level (but with some variation, due to the henchmen-half-XP rule plus multi-classing rules) in around 2 years of play.
My next two AD&D campaigns, with the same players, went to 7th (one was an Oriental Adventures game, around 1 year of play; the other was a thief campaign that was played on-and-off for a year or two).
Since then, I have GMed for my uni group, although few of us have actually been at university in the past 20 years.
The first two were Rolemaster campaigns: one went to the mid-20s (1990-97); the next to level 27 (1998-2008).
Since 2009 I have been GMing a 4e campaign. It has currently just reached 27th level, and I anticipate it will finish in the next 6 months or so.