Written By: Bitumen, dense, highly viscous, petroleum-based hydrocarbon that is found in deposits such as oil sands and pitch lakes (natural bitumen) or is obtained as a residue of the distillation of crude oil (refined bitumen).
  About 3.5 hours-maybe 4 depending on road construction. The hardest part is getting out of Miami to Key Largo-then it's a 2 lane highway through all the keys to Key â¦ West with alot of traffic lights in between. If you are coming from Miami-definitely take the toll road.
If you are planning on taking the greyhound, then it is advisable to make your reservation before hand. It does get quite busy. The journey down to the Southernmost point takes around 4 and half hours give or take. The image below gives a decent representation of stops and timings from Miami to Key West.