I'm looking for advice on marathon training. I’ll be running my 10th marathon this spring and am trying to decide on a plan. My first few marathons followed Shades plan. In 2013 I followed the P & D 12/55 plan and took my PB from 3:59 to 3:45. A couple of years off the marathon saw my times improve across distances using Pfitzinger & Latter plans, then getting 3:42 something on a tougher course following 9 weeks of P & D.
Last year I returned to the same course having done the P & D 18/55 course to complete in 3:45, really feeling that I struggled the last couple of miles where previously with the shorter plans I’d felt strong. I’d struggled during the last few weeks and race times in tune up races were going backwards - I wondered if this was due to the heat thus summer.
Now needing to start training and wondering whether to go with P & D 12/55 again or try something radical such as Hanson, probably the Beginners plan if I do as the mileage is consistently high.
Any advice? I’m female and 45 if that helps. Running since 2007 consistently.