[ghaff]

Depends what long means. A 2 hour commute each way is still going to be that day you dread even if it's just once a week. What seems a more common scenario in my experience is that people get together for a few days meetings maybe once a month and people who aren't local fly in.

[ahartmetz]

If the meetings are scheduled appropriately, you can commute in and out outside rush hours, which should make it less dreadful. Especially if you are not required to be present for 8 hours on meeting day(s).