Trying to Find More Speed

Today:
Distance: 9.75 km
Time: 46' 40"
Rate: 4' 47" per km
Weather: sunny, temp 15 degrees, humidity 50%, wind calm
Week: 51.9 km, Sept: 25.95 km,
Year: 2990.65 km in 35 weeks at 85.45 km ave per week

The gravel track behind Bonython is now my speed location. Not as good as the grass at Calwell, but at least it's close and suitable. Certainly not a bare feet surface.
Easy jog to location as a warm up then 5 x 1 kms with 90 second rest in between. Started first one as easy as I could, not sure on how the legs would be after trying to run fast last Sunday. Better than expected so I just increased the pace each time without turning it to a sprint session.
First 1 km in 4' 27", 2nd in 4' 25", 3rd in 4' 14", 4th in 4' 12" and 5th in 4' 11". At the finished could have gone a little faster and done a couple more but that was enough. Felt good, nice day, sun was shining, what more could I ask.