I highly recommend using a heart rate monitor. Learning to run at correct efforts is very important for workout recovery and fast race times.
One disadvantage of a heart rate monitor is trying to get to the desired heart rate too fast. Learning to use perceived effort in addition to the heart rate monitor will improve you times quite a bit.
I have learned through trial and error what heart rates to use for each race distance. A good rule of thumb is to learn what the corresponding pace feels like and then find out the heart rate associated with this pace.
I try to start each race on the lower range of my desired heart rate and then as I reach mid point in the race I will pick up the pace to the higher end of my heart rate range. I save my all out effort for the last mile of a race.
Heart Rate Ranges for Selected Race Distances
5k Races
- 90% of maximum heart rate for the 1st mile
- 95% of maximum heart rate for the 2nd mile
- 95-98% of maximum heart rate for 3rd mile
- 100% effort for sprint to finish
10k Races
- 85% of maximum heart rate for the 1st mile
- 85-90% of maximum heart rate for 2nd-4th mile
- 90-95% of maximum heart rate for 5th mile
- 95-98% of maximum heart rate for 6th mile
- 100% sprint to finish
½ Marathons
- 80% of maximum heart rate for 1st mile
- 80-85% of maximum heart rate for 2nd-6th mile
- 85-90% of maximum heart rate for 7th-10th mile
- 90-95% of maximum heart rate for 11-13th mile
- 95-100% sprint to finish
Marathons
- 75-80% of maximum heart rate 1st – 13th mile
- 80-85% of maximum heart rate 14th-20th mile
- 85-90% of maximum heart rate 21st-25th mile
- 90-95% or above for 26th mile
- 95% or above to the finish (anything above 90% will cause extreme pain)
A common mistake when using heart rate monitors is the belief that you must give 100% effort right from the beginning of a workout or race. Learning to use a heart rate monitor and effort based training will actually cause you to train more effectively and race faster.
