SWAMP's weekly group rides offer something for all levels.
We break up into groups we call A, B+, B,B-,C. Sometimes A isn't offered as this is the gonzo more experienced rider who knows the trails well and can take care of themselves.
The B and C rides have a guide and a sweep, and regroup at intersections and when going to the next trail. Some assistance is available for mechanicals, flats, etc.
The C rides are not as fast, don't take the more difficult trails, and is more of a leisure pace compared to the B group.
You can drop back a group, or move up a group if need be based on your ability, skill, and energy.
No one gets dropped this way, so you always have a group to ride with. Great way to learn the trails too.
Hope this helps.