It’s entirely possible to travel between Gatineau and Ottawa, partly on bike paths through Gatineau Park south of Grand Remous. However, several quiet back roads also work.
Evening, okay, got it. Can you get to Gatineau on a bike path starting from Mont-Laurier?
I’d refer you to the official sites of Vélo Québec and the Route Verte, which manage Quebec’s bike paths.
https://www.routeverte.com/cartographie-route-verte/https://www.velo.qc.ca/#So, Route Verte 2 (known as the Petit Train du Nord, between St-Jérôme and Mont-Laurier) goes even farther, through Parc La Vérendrye, toward Abitibi (Val-D’Or, Amos, La Sarre, Rouyn) and beyond to Témiscamingue (Ville-Marie, etc.).
I did this crossing during COVID in 2020, but I started from St-Félicien in Lac St-Jean, via Jamésie (Chibougamau, Chapais, Lebel-sur-Quévillon, and Senneterre, where I then connected to RV2 in Val-D’Or).
I’ve also done the bike routes between Mont-Laurier, Grand Remous, Maniwaki, and Hull a few times (in 2012 with my teenage kids, then in 2021 from Toronto and Ottawa on the way back from Newfoundland).
There *is* a bike path, more or less parallel to Route 105, that links up with RV2 from Grand Remous, partly through Gatineau Park farther south.
Personally, I found the small country and forest roads along the Lièvre River—via Notre-Dame-de-Laus and Val-des-Bois (Routes 309 then 307, avoiding the busier 311)—much more charming: more bucolic, winding just right, and fully paved.
Otherwise, you’re forced to take small roads that still see some car traffic.
Bike paths? Cycling routes? Quiet roads?
It’d be a bit of a pointless debate since skill and experience vary so much from one bike traveler to another. A young family with kids will need more safety, while a long-distance cyclist might prefer a loop route instead of backtracking on the same trail to see different landscapes and explore the region more.
The original poster is also considering biking around the Gaspésie, a region mainly served by Route 132, which loops around but isn’t particularly safe for cyclists. Can we assume they’ve got the experience to ride on quiet country roads like the ones I’m suggesting between Mont-Laurier and Gatineau?
https://www.crazyguyonabike.com/doc/NPionQuebecNord2020https://www.crazyguyonabike.com/doc/Canada-tandemTour2021https://www.crazyguyonabike.com/doc/TDM_en_Tandem_Trajets_Maps