I interested in the Track as well. (Crappy Mapsource) software make Route planning tough for the TLH stretch. Thanks.
Hi I made that route on my map source V8 .Once you made it to baie Comeau go north all the way to Reservoir Manicouagan ans then you have to narrow your details to about 8 miles ( sorry that i don't have all the right termes , mine is in french) and you sould see the road it's road 389 all the way to Labrador city then it turn to be road 500 all the way to Goose bay. If you take the Ferry to Cartwright yuo will then find the road down it raod 510. It's all there very small. Good luck and bring spare plugs and a pump..And when do you plan to do it ?
I can send you my route I did for a trip this summer from PA/NJ to Happy Valley and back, send me a PM with your email.