Complex sentence: Until 1968 trains Manchester-Liverpool by all 3 routes were scheduled to take 40 minutes and often took less, but the Warrington route is now restricted to 85mph and the Earlestown route to 75mph, with 60mph over Chat Moss.
Split into simpler sentences: Until 1968 trains from Liverpool to Manchester by all 3 routes were scheduled to take 40 minutes and often took less. The southerly route via Warrington is now restricted to 85mph and the middle route via Earlestown route to 75mph, with 60mph over Chat Moss.