Plantar fasciitis

Surely Plantar Fasciitis is soreness & pain under the centre of the heel rather than in the centre of the foot. Sorry if I have misinterpreted that what you wrote
I had it last year from running & found 'Foot Active Comfort' inserts helped reduce the pain. However, it was only going to a physio & a podiatrist that cured it. Went direct & paid for the treatments myself; not cheap but worth it to me. There was a two pronged approach: take some load off the Plantar Facia & get the foot working properly. Together they allowe the foot to cure itself. They looked at alignment of the spine, walking and running action before making custom inserts. I also had manipulations of the joints in that foot to help the foot arch move properly. New running shoes with a bigger heel-toe drop were bought. So that off-loaded the stress on the Plantar Fascia. To cure it I was given & did lots of exercises to activate and strengthen the muscles in my foot and around the ankle; twice a day, every day. Running was gradually re-introduced. Never had problems cycling as the shoe inserts already there gave good arch support. Ten months on the PF has stayed away but I still do the exercises a couple of times a week as a precaution & because they help my running.
I discussed an injection with the podiatrist who was qualified to inject but held off because of the risks. As the exercises worked there was no need.

I gave myself metatarsalgia once; Felt like I had a large, smooth pebble under my forefoot; very painful, and only relieved by keeping my weight off it and taking the max permissible amounts of ibuprofen for 4 days or so.

It was caused by a new pair of walking boots which were a tiny bit narrower than the old ones, exacerbated by the fact that my wife was away for a week, and I was doing all the dog walking.

Any chance your shoes are too narrow, done up too tightly, or socks too thick so your feet are unable to spread properly when you're stomping down on the pedals?

+1 for birkenstocks. Since wearing birkenstocks the problem has gone away. I have a slightly twisted pelvis which means I'm tight down my left side which is the foot I had the problem in. PF is something that I've had on and off (mainly on) for the last 25 years. Stretching has helped in the past and I always wear an orthotic insert in my shoes. However, like the earlier poster I now wear the birkenstocks most of the time. They are fairly expensive but they last for ages - I'm on my second pair in 3 years worn nearly everyday, and the originals are still OK to wear about the house. In fact I'm wearing them now.

The sizing is a little eccentric (ie a bit on the large side) but once you've got that sorted you can pick them up on Amazon for under £50. The only problems are:
a) they're pretty ugly
b) you'll look like a German on holiday
c) you'll find yourself eating muesli and brown rice

Your link is broken, I wear the boston ones as I don't like sandals. They are all based on the same footbed. I'd go and try some on in a proper shop as the sizing is a bit odd. I'm normally an 11 or 46, with the Bs I'm a 44. They also do different widths as well.

could be very tight calves down at your achilles distal end