How Many Hrs From Townsville To Cairns?

Speed limit is only 100. If I did it in four hours that would be a record. I allow 5 hours but know it won't take that long.

Many sources say 4 hr. But hey, who cares.
You can take 6hr if you want. But you'll get there no sooner then 4hr. The most important is that you drive safe, Rest or RIP. I've done this drive many times and it takes me usually 4hr. Take your time with it, there's many things to see on the way, Crystal Creek, several waterfalls, Frosty Mango. Be careful of trains on unmarked crossings during harvest http://www.cairnsconnect.com/cairns/drivingtimes.php - Tsv to Cairns 4hr, Cairns to Cooktown 5hr