The club that I am a member of is the inverse of that. The faster club runners train alone not with the masses as the main training group is too slow and the mileage to little.
The club has a 'long' run on a Sunday which has a 6 mile and a 10 mile option. (I like to run 15 - 18 miles non stop at a faster pace than they go). A Tuesday run - 3 groups; relaxed; medium and fast. The fast group is a good pace for me but I go where I'm needed as I'm a run leader, So I do my Tuesday run in the morning. Thurs and Sat Track session. These you go at your own pace.
I'd just like to say our coaches are volunteers and very good at encouraging and incluing everyone. One in particular goes out of his way to bring along slower runners. He certainly makes them feel welcome.
For a long time the club didn't have such a large number of faster runners and i stopped running with them as the pace was too slow for me.
My second club meets twice a week for speed work, everyone is welcome and goes at their own pace.