I'm a bit late to the party here, but a note about what I've seen regarding group rides on other cycling forums.
Quite often, in the "group rides" section, or "meetups" or whatever else you care to call it, there is a sticky at the top of the list of threads. That sticky may read something like this:
Then for every group ride, the template *must* be in the OP, and filled in. Such as this:
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Start point/time:
-info
End point/time:
-info
Trip distance:
-info
Average speed:
-info
Terrain:
-info
Route:
-info
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Filled in, it might look something like this:
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Start point/time:
-Totnes Station, South-West Devon. (Trains run regularly through Totnes from most mainline stations). We'll meet at about 11AM, if everyone can get there for that time. If not, we can re-arrange the time..
End point/time:
-Plymouth Station, South-West Devon. (Trains to all mainline stations). End time whenever we get there! (If you're booking trains, perhaps book one for a while later than the expected time we should arrive in Plymouth, rather than earlier. Better to have to wait than miss your train!
Average speed:
-10 - 14MPH
Terrain:
-Well surfaced, decent roads. There is a lot of up/down, the steepest | incline is 12%, and lasts about 1KM.
Trip distance:
-Approximately 26 miles.
Route:
-We'll start off by going towards xyz, then move up along through | abc. After wxy, it's all along the A***, which is very straight forward.
There's a nice pub, the "Queens Arms" that we could stop at, if we
like. (About halfway through), discuss below?
Route link:
http://www.some_map_link.etc/mymap
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This method of setting up groups rides is very efficient, and gives all the info you need right there in the first post....just a suggestion. Sorry for the weird layout of this post too