Campaign Length

Longest Ongoing:

I have an on and off again solo campaign with a buddy of mine in LA (I now live in London – UK) that's been going on for about 18 years (the character is currently 21st level in 3.5).



Average Length of a Campaign:

1 year.



My current Planescape campaign has been going for about 2 years, with some breaks due to travelling, family and work etc (the party is 12th level – we try to play fortnightly, but it can be hard work getting 5 adults all in the same place at the same time).

I had two very long running campaigns.

My first Ars Magica campaign lasted 5-and-a-bit years.

My RuneQuest campaign lasted nearly as long.

For D&D the most I can muster is about a year and a half, but very rarely that -- it tends to get rather repetitive after a while.

As one of those who is coming back to gaming from an exceedingly long hiatus this poll is useful for judging my proscpective time commitments but only half so. That's not a stab at anyone just that I think there is something missing.
That is...
How long and often are you all playing within a given year to base the results on?
or
How can I tell if those who's campaigns are lasting 1-2 years are any different to those lasting 4-5 years if one group plays twice a week and the other once?

You may be basing this on a presumption of a certain no. of gaming hours per week that I am missing the info on. can someone clear this up?

If not whats the average time I could base the results on?


Thanks

My longest campaign was one I ran in Ravenloft durring 2e. It went for 2 years meeting each week for the first year and then alternating weeks durring the second year. Was a great time, many fond memories of players becoming paranoid from events in play, mystery, horror and tense fights.

Actually thinking of revising the idea from that campaign and doing a bit of 4e Ravenloft conversion. Should be a fun thing to kick around at least.