Ok So  a 16 week beginners training schedule for the half marathon...Run four times a week
ay 1 Day 2 Day 3 Day 4 WEEK 1- 4M slow 3M slow 4M 3M, timed
WEEK 2 -3M easy , , 3M, with a few 50m bursts 3M easy , 5-6M slow
WEEK 3- 4M easy,  4M, with a few 100m bursts,  3M, timed, plus 1M jog, 7-8M slow (or 1 hour)
WEEK 4 -4M easy,  4M, inc several 30-sec bursts,  4M , 8M slow (or 1 hr)
WEEK 5 -4M or 35 mins easy, off-road if possible, , 4-5M of fast-and-slow, with bursts up the hills (but not down them) 4M or 35 mins easy, off-road if possible,  9-10M steady, or 10K race
WEEK 6- 3-4M easy on soft ground 1M jog, then 2 x 5 mins fast, with 5-min slow jog recovery 4M easy on grass 9-10M slow WEEK 7- 3-4M easy, off-road if possible 3M, inc a few short bursts 3M on grass Warm up, then 10K race, then 10 mins walking or jogging
WEEK 8 -4-5M easy, off-road 1M jog, then 2 x 7-8 mins fast, with 5-min jog recovery 4M on grass, inc several short bursts 11-12M, as slow as you like
WEEK 9- 3-4M easy, on soft ground 1M jog, then 2 x 5 mins fast, with 5-min slow jog recovery between 4M easy on grass 9-10M slow
 WEEK 10- 3M easy, off-road 1M jog, then 1M at race speed, then 1M jog 2M jog Race