. It has been widely used since then. The formula is T2 = T1 x (D2/D1)1.06 where T1 is the given time, D1 is the given distance, D2 is the distance to predict a time for, and T2 is the calculated time for D2.

Rest 5K t-trial run at estimated half-marathon pace 6M/10M/16M 17M/29M/48M WK 7 3M/4M/6M jog Rest/Rest/7-9M Tempo Run 4M/7M/10M steady Rest/4M/5M jog Rest 2M/5M/9M jog then 5K t-trial at just faster than marathon pace

was already a marathon runner, and most of my runs were long and slow. My cross-country conqueror took a different tack. He focused on hard 1,200m intervals, subjecting his muscles to the kind of stress he’d face in competition. At times he also ran 400m

, there are plenty of marathons around so I’m thinking about maybe trying again in September. (Updated 27/04/09) Read more Sue (aka Sue C) Finish Time: 3:36:00 Target Time: as close to 3:15 as possible Sue says: I knew from Mile 3 that things weren't going

If you're running a marathon this spring, you're about to enter the most critical – and difficult – four weeks of training, when 1) your weekly mileage is at its peak; 2) your motivation may be flagging; and 3) you're most likely to get sidelined

At a Glance Profile Nickname: Mystic Age: 35 Running for: 15 years No. of marathons: 0 PBs: 10K 52:00 Half-Marathon 2:08

At a Glance Profile Nickname: Sue C Age: 36 Running for: 3 years No. of marathons: 2 PBs: 10K 43:00 Half-Marathon 1:37 Marathon 3