"らしい" and ”みたい"

"らしい” と "みたい" の違いは何ですか？
What is the difference between "らしい" and ”みたい" ?

Basically, "みたい" is used for an assumption based on some grounds.
On the other hand, "らしい" is used for hearsay information.

See example below:
There are four people; Bill, Steve, Larry, and Bob.
One day Steve saw Bill. He was leaving home equipped with mountain-climbing gear.
Steve said to Larry, "ビルは登山に行ったみたいだよ".
After that, Larry said to Bob, "ビルは登山に行ったらしいよ".

Steve saw Bill leaving, so he can use "みたい".
Larry didn't, so he used "らしい" as the meaning of hearsay information.