I will be doing a 50 mile ride in a few weeks' time, most of which is on tow paths and a disused railway line. The surface will therefore be somewhat rough and loose, but not muddy and no major obstacles.
Obviously I would like to use the bike I have, which I use for commuting every day on smooth tarmac bike paths. It is a hybrid bike (rigid forks, flat handlebars, regular rim brakes), which is obviously not a major problem, but I have replaced the original tires (35mm I think,and a little knobbly) with smooth 28mm tires.
Will my bike be suitable, comfortable and safe (for the bike and for the rider) on off-road tracks?
Edit for more info: The disused railway is fully decommissioned, and is routinely used by walkers and cyclists (it is now a public bridleway). I haven't seen the surface personally but I gather it is fairly level and smooth but covered in a mixture of compacted soil, gravel and stone chippings and grass in some areas