Three Weeks, Two Days...
There are several fall trail races coming up in addition to BigT, many of which can be great training runs, race prep, scoping out the age-group comp, simply enjoying the trails with friends, etc. A few of this week's events are helpfully noted and linked to below (from the Striders FB page).
But say, maybe your weekends are busy and/or your preference is to train alone. If so, consider tracking other BigT runners on Strava (you don't use Strava? you should) and matching your weekly totals side-by-side to get an idea of the type of work people are putting in, out and above and around town. We've got a BigT Strava Group setup just for this purpose - join the group and train virtually with some of us other adventurous, peculiar, and pain-tolerant people.