Evenin' All, Newcomer here and I’m after advice I'm afraid, though having read through all the posts over the course of the last hour, I hope that I am not going to ask too many bone questions!Ok, the basics: 47years old; 30 years in the military; fitness very much part of life; ex rugby player; never had the commitment to run a marathon... until now! The thing is that we arrived here in Naples (serving with NATO) in July this year and the missus fell in with a group of ladies the same age who have been training for the Rome Marathon (18 Mar 12) for the last 3 months (not sure what plan they are doing - I suspect it is a 12 weeker that they have been 'dwelling on' until they get closer to the race). Anyway, my wife wasn't serious at first, simply using the regular sessions as a way to get out and re-acquaint herself with running in a glorious climate (having raced XC as a schoolgirl). Given that I work all day we are not able to run together and I set my sights rather lower (or higher, depending on how you look at it...) by simply aiming to do my best on the Brit sponsored 'Vesuvius 10km Race' (800m climb start to finish). Without boring you all, Libya got in the way and I didn't train as much as I should have, but managed a very creditable 1hr 19min (two weeks ago). On Monday this week, around my established 10km training circuit, which features about 50/50 hill work and a 300m climb in all, I managed a PB of 58 mins, but working at about 85% capacity (I regularly run with an HRM). Though I have yet to test myself on the flat, I suspect I could probably do around the 50min mark for 10km.And now to my problem... the missus has become so keen on her running that she has just signed up to run the Rome Marathon. I reckon that if she is going to be out 5-6 days a week getting in the miles, then I might as well get stuck in and have just agreed to take the same opportunity to commit to my first marathon – Hurrah! The 64,000 dollar question is that with only 15 weeks until D-Day, will the HADD plan work for me? Or should I go for something more traditional, assuming that I already have a pretty good base level of fitness now? Perhaps I could combine the two: say do the HADD for 10 weeks before getting some speed work in... or should the HADD suffice regardless? So many ponderables!The other problem I face is that I am currently part of a team training for next year's Navy 'Gun Run' competition which already involves two beastings a week in the gym and which is set to get more demanding in the New Year. I know someone else asked in this thread about mixing high intensity cross training with HADD, but I'm not sure I saw a definitive answer. Will it ruin the effect altogether, thus negating the value to be had from a 'base' style of programme, or can I combine a HADD run in the morning with a circuit session at lunchtime? I think that's enough for now, but I hope the ‘HADD Masters’ among you can see my quandary and offer me appropriate guidance. The bottom line is that I want to do myself justice in my first ever marathon (despite not being able to say with any certainty whether that will be sub 5, sub 4.5 or sub 4...).All advice gratefully received!