It's exactly 100 miles from the airport to Anfield.
The AA route planner has it down for 2 hours but I did it in 1 and a half hours and rarely broke 70.
Need traffic to be clear as well to do it in that.
Take the A50 to Stoke, M6 North from there and then the M62 to Liverpool. Apart from the first 2 miles, it's all dual carriageway/motorway.