Throwing around the idea of doing this next weekend as I've never done it. Anyone want to join?
You'll need a lot more than 3 days, I've done the trip 3x and less than 4 days is simply unattainable. Words to the wise...
The roads north of North Bay deteriorate severely. By the time you get to Rouyn Noranda, you'll be crying for a break and a soft mattress.
I'm aiming for four days, leaving Friday morning and coming back Monday evening. I think that should be reasonable
No camping is recommended. You can book a room in Radisson. Or you can book a room in Matagami, ride half-way out to Rupert's Falls and back (that's a full day right there, and you'll need at least 10L fuel can with you), but that's not getting you to the Bay itself.
....or make with the hand motions.
- From Matagami northwards folks won't speak English or will speak it poorly. Brush up on your Quebecois or make with the hand motions.
What kind of bike are you taking?