Running for Fitness

I want to run a: 200 metres 400 metres 800 metres 1 km 1500 m 1 mile 2 km 3 km 2 miles 5 km SRC Handicap 8 km 5 miles 10 km 12 km 15 km 10 miles 20 km Half marathon 25 km 30 km 20 miles 40 km Marathon 50 km 50 miles 100 km 150 km 100 miles 200 km  in a time of hrs mins seconds

And I want to run Very negative (48/52) Negative (49/51) Even (50/50) Positive (51/49) Very positive (52/48) splits in two even paced halves gradually changing pace