Your diabetes team says walk more. The step counter says 2,400 on a good day. The gap between those two numbers is where feet get into trouble, because the foot that handles 2,400 steps is not automatically the foot that handles 8,000.

Walking tends to help blood sugar, weight, blood pressure and sleep at the same time, which is rare. It is also repeated pressure on skin that may be drier, less sensitive and slower to repair than it used to be. Both things are true together. The goal is not to walk less. It is to notice what the extra distance is doing while it is still a red mark.

What changes when your daily distance goes up

Every step loads the same few places: the heel, the ball of the foot, the tips and tops of the toes. At a low step count the skin keeps up. Add a few thousand steps a day and three things tend to appear first.

• Callus over the ball of the foot or along the edge of the heel, where the same pressure now repeats hundreds of extra times a day.

• Friction spots at the toe box and the back of the heel, usually in shoes that were bought for standing around rather than for covering distance.

• Damp skin between the toes, because a longer walk means more sweat inside the same sock.

When sensation is reduced, none of those three announces itself. Callus does not hurt. A hot spot that would make someone else stop at the second kilometre to fix a wrinkled sock can go unnoticed until the sock comes off at home. That is why the routine below is built around the walk rather than around whether anything feels wrong.

Look at your feet after the walk, not just before bed

Shoes and socks off within a few minutes of getting home, then look at the whole foot: the sole, between the toes, the back of the heel, around every nail. A mirror on the floor or a photo taken on your phone covers the parts you cannot see comfortably. It takes under a minute.

What matters is anything that was not there this morning. Redness that stays put after a few minutes off the feet. A blister or a soft fluid filled area. Skin that is split or broken. A dark patch under a nail. A spot that feels warmer than the same place on the other foot. If you are not sure which findings carry weight, our guide to warning signs in diabetic feet sorts them by urgency.

Add distance in increments you can walk back

Roughly a tenth more per week is a workable ceiling for most people starting out, and two shorter walks are easier on skin than one long one. Two habits matter more than the exact number.

• Hold your distance flat for a week whenever you find a new red mark, instead of pushing through it.

• Treat a new route as a new load. A ravine trail, a treadmill at an incline and flat sidewalk put pressure in different places at the same step count.

Friction control on longer outings is worth borrowing from hikers. The taping, sock and lacing adjustments in our blister prevention guide for trail days work just as well on a six kilometre neighbourhood loop.

Socks and shoes for the distance you now cover

Three checks cover most of it. Socks first: flat seams or none at all, in a fabric that moves moisture rather than holding it, which cotton does not. Fit second: enough room that your longest toe is not touching the end while you stand, since feet swell over the course of a walk. Habit third: run a hand through the inside of each shoe before you put it on, because a small stone or a folded insole can grind away for an hour without registering when sensation is unreliable.

Walking shoes wear out from the midsole up, so the outside can look fine while the cushioning is finished. If a familiar route starts feeling harder on your heels, the shoes are a reasonable first suspect.

Weather is part of the plan

Hot pavement in July and cold wet sidewalks in November create opposite problems that end in the same place. Heat brings sweat, softened skin and burns from surfaces you would not test with a bare hand, which we cover in summer foot safety with diabetes. Cold brings numb feet that hide a developing blister, plus the temptation to warm them on a radiator or a heating pad, a common source of burns when you cannot feel the temperature accurately.

Wet shoes deserve their own note. Skin that has been damp for an hour tears more easily than dry skin, so a second pair in rotation and spare socks in your bag are worth more than they sound. Once you are home, put something on your feet instead of crossing the floor bare, for the reasons set out in our piece on walking barefoot indoors.

You found something. Now what?

Small and closed, such as a faint red patch with the skin intact: cut the distance, sort out the shoe or sock that caused it, and look again in the morning. Faded is fine. Still there is a reason to book.

Open, draining or spreading is a same day call rather than a next week call. Do not drain a blister yourself, do not trim callus with a blade or a store bought acid plaster, and do not seal broken skin under anything that traps moisture. Redness travelling up the foot, discharge, an odour, fever, or a sore that has not begun to close within a couple of days needs medical attention that day.

Where an assessment fits before you increase the distance

A check before a walking block is more useful than one after a problem. A chiropodist can reduce callus safely, test protective sensation and circulation, look at how pressure sits under the foot, and say whether your current shoes suit the distance you are planning. Callus already sitting over a pressure point is the thing most likely to break down underneath once you add thousands of steps a week, and it is straightforward to deal with beforehand.

Donwood Foot Clinic provides diabetic foot care and general chiropody assessments in North York. If you are closer to the ravine neighbourhoods, our notes on a diabetes related foot check in York Mills and the Bridle Path describe what the visit involves. Many extended health plans include chiropody, which we go through in what is covered in Ontario.

Frequently Asked Questions

Is walking still a good idea if I have lost feeling in parts of my foot?

For most people it is, and reduced sensation changes how you monitor rather than whether you go. You check visually after each walk instead of waiting for discomfort to flag a problem. One exception: if you have an open sore, a recent ulcer, or a clinician has asked you to keep weight off a particular area, get that cleared first, because walking through it is what turns a short problem into a long one.

How much can I increase my walking in a week without asking for trouble?

Adding about a tenth of your current weekly distance is a sensible pace, and holding steady for a week after any new red mark matters more than the percentage. People who run into skin problems rarely crept up on them. They doubled their distance on a nice weekend.

My walking shoes feel fine. Do I really need another pair?

Not necessarily a different style, but check the age and the fit under load. Shoes that are comfortable for errands can be too short once your feet swell on a long walk, and a packed down midsole still feels normal while it has stopped absorbing much of anything.

I found a blister after a walk. Should I pop it?

Leave it intact and cover it with a clean dressing. Unbroken skin is a better barrier than anything you can put over an opened blister. With diabetes, a blister that has already burst, looks cloudy, or sits over a bony prominence is worth having looked at rather than managed at home.

Does treadmill walking count, and is it safer than going outside?

It counts. It removes uneven ground, ice and hot pavement, which is genuinely useful. It does not remove friction, and a treadmill session at a steady pace loads the same spot more consistently than a varied outdoor route does. Check your feet afterwards either way.

Walking more is worth doing, and one minute of looking at the feet doing the work is what keeps it going. To have your feet checked before you add distance, book an appointment with Donwood Foot Clinic.