It's perfectly acceptable to run and take walking breaks during marathon training. Elite extreme athletes often walk during hill training too. Many people run/walk events such as half/full/extreme marathons and even short hauls like 10K. Whoever participated in or watched any marathon race knows that majority of runners walked parts of the distance. All except the elite or trained club runners, in fact. And l fully understand and respect that.
Ok, so here's my problem with it, and I'm keen to hear your opinions. I run, hence l don't want to walk during my runs. During HM distance l ran steadily and didn't stop for water or toilet break. The point is, l was prepared, didn't feel fatigue or pain and was comfortable throughout. But l do know that l cannot do that over 42K without stopping and that is why I'm reluctant to attempt it. I know that I'm fit enough to run/walk but for the stubborn me it's either run, or none.
A marathon friend told me l could do it if prepared carefully over time and if lucky enough to stay clear from injuries. He never walked it, and refuses to walk it but unlike many of us he has been running since childhood and is now middle aged. His last year's London marathon was done in just over 3.5 hours but resulted in a groin injury that sidelined him for 10 months (a potential glitch for me to consider).
I'm about to train and drill HMs this and next year, slowly increasing the distance and follow Hal Higdon's guide, praying to stay healthy and fit and hoping the body will deliver.
What would you advise? How do you see run/walk? What is your experience? Am l setting myself too high a target or obstacle? Or maybe l should simply do what l physically can and mentally enjoy, whatever the distance, rather than thinking of pirouetting the whole marathon like a machine.
It would be great to run the whole distance but marginally less great to be found in a ditch, spread like a battered bird, face in mud, one eye half open, foam around the mouth, attempting to write something on the ground with a stiff finger....fairly unattractive option for a gentleman.