So Numb Toes rear thier ugly, err, toes again...
Dead interested (hmm appropriate adjective) to read this thread. I'm another member of the dead foot gang. I have investigated it with various physios and podiatrists and there are several possible explanations. There are also several slightly different issues we're discussing here.
For me it's mainly in one foot, the middle toes feel numb, and stumpy. Also I have a related pain in the peroneal muscle - the outside of the leg up from the ankle (not calf or shin but sometimes described as such)
The first thing to address is lacing one's shoes correctly. Loose enough around the toe box and tight enough round the ankles. Finding the right shoes helps of course. This probably means there's a circulation problem involved. I suffer from Rerynaud's disease - which doesn't help. So numb toes worse in winter for me. But not exclusively.
One podiatrist I saw was convinced that stretching the calves properly would help - and it does, but you have to be dedicated about this. Not just half a minute after a run - more yer 10 mins a day, every day. I did the series of exercises she gave me over the summer and the tingling in the calves and peroneals did noticeably improve.
Another answer is the possibilty of Mortons Neuroma. Think that's what it's called. There lots of info on this on related threads.
Another possibility - and this is something that happens to me - is that the talus, a big bone at the front of the ankle can slip out of place and trap a nerve. Well that's the short answer. Manip. can dramatically help, but doesn't stop the bone slipping back again. This can be helped by, yeah you guessed, religiously doing a series of ankle strengthening exercises. I didn't do my stretches and exercises and everything got worse again. Numb toes - welcome to Stumpy Racer - tingling calves and aching peroneals - welcome to DNF Racer. However i have recently really got down to the exercises and have noticed a BIG difference. But you have to stick at it.
Hop this isn't too rambling