ULTRA RUNNING BLISTER AND CHAFING PREVENTION

Running blisters develop through repeated shear within the skin. Heat and moisture can make conditions worse, while movement between the foot, sock and shoe, pressure around the toes or forefoot and the way footwear fits can all influence where problems develop.

Rather than assuming that every blister requires different shoes or socks, look at exactly where it occurs and what is happening there. A blister between the toes presents a different problem from one beneath the ball of the foot, at the heel or around a toenail.

There is no single blister prevention method that works for every runner. The useful approach is to identify the likely cause, change something for a reason and test the result over progressively longer training runs.

Start with the location. Consider whether the foot is moving excessively inside the shoe, whether the toe box or another area is creating pressure, whether lacing can be adjusted and what happens as your feet become warmer or swell over several hours.

Socks are another part of the system. Construction, fit and moisture management can matter, while toe socks provide a different approach where skin-to-skin contact between toes is a recurring problem. See our running socks for the different options available.

Also look beyond the obvious equipment change. Grit inside a shoe, an insole edge, hard skin, a seam, wet feet or simply too much movement can each produce a different problem. Randomly replacing shoes, socks or blister products without knowing what you are trying to alter makes it harder to learn what actually works.

Use training to identify recurring hotspots and test your footwear, socks and preventative measures before race day. Depending on the problem, that may include taping a known area, using foot powder or lubricant, adjusting lacing or changing the way the shoe fits around a particular part of the foot.

Foot preparation can begin well before the start. Excessively hard or cracked skin may need appropriate care, while keeping skin in good condition can make it easier to manage over long distances. Avoid making major changes immediately before an important race.

The objective is not to build an increasingly complicated routine. Find the simplest combination that deals with your known problems and has already worked in conditions reasonably similar to those you expect during the event.

Foot care costs time, which matters when you are racing against cut-offs or trying to maintain momentum. Ignoring a developing problem can cost considerably more later, particularly if pain changes the way you run or walk.

A hotspot noticed early may justify a short stop to adjust a sock, remove grit, dry the foot, reapply powder or lubricant, or protect the area. Longer races may also justify fresh socks or a footwear change where this is available and there is a clear reason for doing it.

There is no need to stop simply because a checkpoint has chairs and a foot-care kit. Equally, repeatedly running through an obvious developing problem is not necessarily efficient. Experience helps you learn which issues can wait and which are worth dealing with early.

Prolonged wetness can soften and macerate the skin, making foot problems more difficult to manage. Rain, stream crossings, mud, sweat and waterproof footwear can all contribute, particularly when exposure continues for many hours.

Where the race and conditions allow, changing into dry socks, allowing the feet to air and dry, using an appropriate foot powder or dealing with water and debris inside the shoe can all be useful. On a very wet course it may be impossible to keep feet completely dry, so concentrate on managing rather than pretending you can eliminate the problem.

Pay particular attention to recurring problems around the toes and beneath the forefoot. What works for a short wet run may not remain comfortable after many hours, so wet-weather training is valuable before races where prolonged rain, bog or repeated river crossings are likely.

They address the problem in different ways, so there is no automatic first choice. Powder may form part of a moisture and friction-management strategy inside the sock, lubricant can reduce friction at a particular interface, while tape physically protects a known hotspot.

Some runners use one approach and others combine methods. Personal preference matters as well: a product can be technically suitable but still be a poor choice for you if you dislike the feel, cannot apply it reliably or find it inconvenient during a race.

Start with the problem rather than the product. Decide what you are trying to change, test the approach in training and keep what proves useful over the distances and conditions you actually run.

Common areas include the inner thighs, groin, between the buttocks, underarms, nipples and bra line. The first question is what is creating the repeated contact: skin against skin, clothing, a seam, waistband, bra, race vest or another piece of equipment.

Clothing choice and fit can sometimes remove the cause altogether. A race vest may need adjusting or loading differently if it moves against the body, while shorts, underwear or a top that become uncomfortable when wet may need reconsidering for longer events.

Lubricants, creams, petroleum jelly, tape and patches can all be useful ways of protecting recurring problem areas. There is no need for everybody to use the same method. Use training to find an approach that remains comfortable once you are hot, sweaty, wet or moving for many hours.

Known problem areas are generally easier to protect before irritation starts. Apply your chosen product to healthy, intact skin before running according to its instructions, then carry enough to reapply during a long event if experience tells you that this is necessary. Once skin is badly irritated, cracked or bleeding, prevention has become a different problem from treating the resulting damage.

Single-use wipes or sachets can be useful because they take very little space in a race vest, waist pack or clothing pocket, allowing protection to stay with you between checkpoints. Full-size products are usually more practical for regular training and pre-race use, or can be kept in a drop bag or crew kit during longer events.

Repeatedly adding lubricant should not replace investigating an avoidable cause. If the same seam, strap or item of clothing produces the same problem on every long run, changing that part of the setup may be the better solution.