1. Health
Send to a Friend via Email

Discuss in my forum

Most Common Marathon Injuries

How to Prevent or Keep Racing with Common Marathon Injuries

By

Updated November 06, 2013

Running or walking a marathon of 26.2 miles is a grueling endurance challenge. Marathoners need to prepare properly to prevent common injuries. When a minor injury or symptoms of a problem occur during the marathon, learn how to deal with it and whether it is safe to continue to the finish.

1. Blisters

Blistered Feet
Wendy Bumgardner ©
Almost everyone will end the marathon with foot blisters. If you have put in your full training schedule, you will have been toughening your feet and building calluses. You will also have experimented with which combination of shoes, socks, drying agents, covering pads and lubricants work best for you. Blisters endanger your race when they occur in the early miles of the marathon and upset your usual gait for a longer period of time. It is best to stop at the first sign of a hot spot and cover the area with a gel bandage or moleskin pad. If a blister has already developed, you may want to sterilize the area, drain it, and then cover with the bandage or pad.

2. Black Toenails

Black Toenail
Sarah Walsh ©
A black toenail is caused by a blister or blood pooling under the nail. During the marathon, this is most often caused by the repeated trauma of your foot sliding forward in your shoe with each step. You can prevent black toenails by lacing your shoes to retain your heel in the heel cup and prevent your foot sliding forward in the shoe. Often, you only notice the black toenail after the marathon, rather than it hurting during the marathon. You will lose the toenail and it will grow back over the course of three to five months.

3. Chafing

Chafing on Back from Backpack
Wendy Bumgardner © 2012
Chafing occurs where skin rubs against skin. Add salt from sweat and you have raw, painful areas. The chief areas that chafe are the underarms, nipples, under-breast area, groin and thighs. As you discover on your long training days which areas chafe, take measures to keep those areas dry with cornstarch, or lubricate them with petroleum jelly or roll-on silicone products. People who don't wear bras should cover their nipples with bandaids to prevent nipple chafing. If your marathon is in a different climate than your training days, you may chafe in new areas. Most marathons provide petroleum jelly at water stops. Take advantage of it to generously lubricate the areas that are chafing.
Best Chafing Prevention Products

4. Runners Trots and Nausea

Marathon Porta-John
Wendy Bumgardner ©
Stomach and bowel upsets are very common during the marathon. Use extreme care in what you eat and drink the 48 hours before the marathon. No spicy foods or alcohol. Do not eat anything unfamiliar. Limit your caffeine before the marathon to the minimum you simply must have. Do not overeat as the sheer volume of food still in your digestive system can be the problem. Avoid dairy products if you are lactose-intolerant. On the course, only use energy snacks and sports drink that you used on your training walks and runs without ill effects. If you are prone to runners trots, try Imodium on your training days first to see if it helps. Know the locations of the porta-johns on the route.

5. Dehydration

Water Stop at the Finish Line of the Livestrong Challenge
Wendy Bumgardner © 2008
It is important to know how your body handles its needs for fluids by keeping track of it on your long training walk or run. Weigh yourself before and after a long session. You should neither have lost or gained weight. Marathon fluid guidelines as of 2005 state that you should let thirst be your guide, unless your experience from weighing on training days shows it is not accurate for you. Signs of dehydration include dry mouth, fatigue, dizziness, stomach ache, back pain, headache, irritability and decreased urination. If you experience these, slow or stop and drink sports drink until you have recovered. It is unwise to continue the marathon once you have these symptoms.

6. Hyponatremia

Powdered Gatorade
Wendy Bumgardner ©
Hyponatremia occurs when you drink too much fluid and your body doesn't have time to eliminate it. This dilutes the salt concentration in your cells, which is very dangerous. Signs of hyponatremia include nausea, headache, cramps, confusion, slurred speech, bloating and swollen hands. Stop and do not continue with these symptoms. Hyponatremia has killed runners during the marathon. A study at the Boston Marathon showed that hyponatremia is more common in marathon walkers and slow runners, who spend more time on the course drinking more fluids, regardless of whether they drank only water, only sports drink, or a combination. Don't drink when you aren't yet thirsty, unless your experience shows your sense of thirst isn't accurate.

7. Sunburn and Windburn

Sun Visor
Wendy Bumgardner © 2011
Wear a hat with a bill to protect your face and the top of your head. Apply sunscreen to every bit of exposed skin, especially your ears. Protect your lips with a sun-protecting lip balm. Marathoners will spend three to nine hours outdoors, at the mercy of the sun and wind. Slower runners and walkers may want to reapply sunscreen at the halfway mark. Don't be afraid to beg some from the course volunteers, they probably brought some along for their own use even if the course doesn't provide it. If you forgot the lip balm, use petroleum jelly at the water stops. For cooler, windy days I like to have a Buff neck gaiter to wear as a balaclava or scarf for extra wind protection.

8. Muscle Cramps

Stretching
Wendy Bumgardner ©
Classic leg cramps can hit you during the marathon, especially if you experience dehydration and salt depletion. If a cramp strikes, stop and gently stretch and massage the cramped muscle. Drink sports drink to replace fluids and salt. But you may also experience strange cramps or muscle spasms in muscles anywhere in your body. This can happen from the strain of using the same posture and gait for several hours. To prevent these, work on proper posture throughout your training walks and runs. During the marathon, think of your posture and relaxing your shoulders. Change up your stride and pace on uphills and downhills. Have fun waving at the crowds or dancing past any on-course bands.
More: Leg Cramps

9. Hitting the Wall

Honey Stinger Energy Gel
Wendy Bumgardner
Hitting the wall -- completely running out of energy stores in your muscles -- is more common in competitive marathon runners than in slower runners or marathon walkers. Walkers have more time to absorb energy calories from sports drinks and energy snacks. To prevent hitting the wall, drink full-strength sugared sports drink throughout the event. Supplement that with energy gels or other energy snacks to replace the number of calories you are expending, approximately 80-100 per mile. If you feel fatigue on the course, have a snack immediately. If you simply can't go on, stop, snack, drink, and reassess your condition in 10-15 minutes.

10. Sprains, Strains and Stress Fractures

Sprained Ankle
Wendy Bumgardner ©
In the crush of runners and walkers, or after long hours on the course, you may sprain an ankle, pull a muscle, or experience a stress fracture. Sharp, sudden, extreme pain that isn't a muscle cramp signals you to stop and signal for assistance from the course volunteers.

©2014 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.