Once you've run in enough races, you're bound to witness (unfortunately) some shady behaviors by a participant or two. You know, the runner who doesn't go all the way to the end of an out-and-back course, or the person who crosses the finish line after running just one loop of a two-loop course.

With many races using timing chip technology, it's harder for race participants to get away with that type of cheating. But a few people still try and succeed, sometimes even winning an undeserved award. How do you feel about people who try to cheat in running races? Should they be disqualified if they get caught? Should they be banned from that race for life? Share your opinions here and take the poll.

Related links:

• Road Race Etiquette Tips
• Race Manners for Walkers

Protecting your eyes from the sun while running is important all year-long -- but the stronger rays and longer hours of daylight make it even more critical in the summer months. Your eyes, like your skin, are susceptible to UV damage that could lead to issues such as melanoma or cataracts. Ideally, your running sunglasses should block the two parts of UV radiation — UVB and UVA — by 99 percent and 95 percent, respectively, according to the American National Standards Institute, a nongovernmental body that sets standards for sunglasses. Wearing a hat with a brim will give you additional protection from the sun.

A good-quality, comfortable pair of running sunglasses is a great investment because they'll last a long time and you'll actually wear them (since they won't pinch your nose or slide off your face). Check out these recommendations for top running sunglasses.

Related links:

• Women's Summer Running Gear
• Hot Weather Walking Gear