Hi BD2000
. If a HM is your aim, I would just concentrate on getting your weekly mileage up first. HM training really requires at least 40 mpw, with at least a 14 mile LSR once a week. To get there you need to build up from your 15-25 mpw starting point gradually over the next 10-11 weeks ... say 15, 17, 19, 21, 23, 25, 28, 31, 34, 37, 40, all at around 125-135 bpm.
So start with something like this...
Sun 5M, @ 125 bpm
Tues 2M, @ 135 bpm
Wed 3M, @ 130 bpm
Thurs 2M, @ 135 bpm
Fri 3M, @ 130 bpm
... and the next week add a little distance to the Sun, Wed, Fri runs ... and the following week add some mileage to the Tues & Thurs runs. Then go back to increasing the Sun, Wed, Fri runs ... etc etc. Try to keep the Sunday run at about 30-35% of the total mileage, so that it will be 12-14M by the time you get to 40 mpw. Maybe somethign like...
Sun 14M, @ 125 bpm
Tues 4M, @ 135 bpm
Wed 8M, @ 130 bpm
Thurs 6M, @ 135 bpm
Fri 8M, @ 130 bpm
At this point you will be much more robust and will want to then start to introduce a sub-LT session once a week and move onto a proper Hadd-like base-traing schedule for 10 weeks ... and then after that you could start introduing some HM pace work (and faster) over the final 5-6 weeks.
But first off you need lots of slow SAFE miles.
Edited: 16/08/2012 at 17:14