Half-marathon entered

The only one of the challenges not yet sorted out - the half marathon - has now been arranged; I'm booked in for the Milton Keynes half-marathon on Sunday 18 July, which gives one challenge per month; the triathlon in June, the run in July and I start the bike ride at the end of August. Better get training... since the furthest I've ever run is 6 miles, and that was over ten years ago.