I have not done any long journeys on the Rebel. I don't have enough patience for the leisurely pace that is necessary for travelling on a small displacement bike. Back in 2013, I did participate in a one day 250 cc Rally that covered 720 kms. (447 miles) total. This distance was not at all difficult to do since we stopped very often during the day.
This was in the fall, so the early morning was very chilly with ice fog on the face shield (face shield ices up from freezing mist droplets)
It turned into a good day later on though as it warmed up, but riding in that fog was truly scary due to the loss of visibility.
Here's a pic of yours truly on the way to Parrsboro, NS. This was still early morning and cold, but the fog had cleared.
2004 Rebel 250, 2003 BMW K1200GT (roadburner), 2004 BMW R1200GS(all purpose),
1973 Norton Interstate (in a box in the basement)
1968 Triumph Bonneville