depends on weather conditions leading up to the event. Or if they grade the road and it is soft.

25mm is a narrow gravel tire. Except on an 'ideal' packed gravel road, of course.

edit: Which route you choose makes all the difference.
even if the sloppy conditions on the long route are only a few miles, too narrow on the rubber can be hazardous. Unless you walk the slop.


one showstopper stops the whole show.