Runner's Cheat Sheet #2: Racing Terms

Just like most everything these days, the world of running and particularly racing is full of unfamiliar words and acronyms to the new runner as well as the experienced. Below is the second in a series of Runner's Cheat Sheets that I'll be providing. Hope it helps!
• 5K—race with a distance of 5 kilometers (3.1 miles)
• 10K—race with a distance of 10 kilometers (6.2 miles)
• 15K—race with a distance of 15 kilometers (9.3 miles)
• 20K—race with a distance of 20 kilometers (12.4 miles)
• Bandit—a person who runs a race without paying the registration fee
• BQ—a Boston qualifying time or a race that's a Boston qualifier
• Carb-loading—eating a high-carbohydrate diet (60%-70% of the total calories) at least three days prior to a race to fill the glycogen stores
• Chip time—finish time that's recorded by a computer chip typically worn on the shoe or around the ankle. Tracks each runner's time from when they cross the start line and finish line.
• CR—course record
• DNF—did not finish
• DNS—did not start
• Elite runner—a person who has reached the highest level in his sport
• Gun time—finish time that begins when the start gun sounds until the runner crosses the finish line
• Half-Marathon—race with a distance of 13.1 miles
• Hitting the wall or bonk—a time during a race when your glycogen stores become depleted and fatigue overwhelms you. Typically happens around mile 20 in a marathon.
• Marathon—race with a distance of 26.2 miles
• Master—a runner 40-years-old or older is classified as a Master in the US. In other countries term used is Veteran
• Negative splits—running the second half of a race faster than the first
• NR—national record
• Pace—the measure of speed of running; usually thought of as the number of minutes it takes to run a mile during a race
• PB—personal best
• PR—personal record
• Road Race—running contest that takes place over streets
• Taper—reducing your mileage several days to a few weeks prior to a race
• Ultra—any race longer than a traditional marathon which is 26.2 miles
• USA Track & Field—the national governing body for running in the US
• WR—world record