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Footpod

A Footpod is a small device that measures pace and distance while running or walking. These Footpods contain accelerometers that calculate the movement of your foot, providing an accurate measurement across a broad range of paces and stride lengths. A Footpod does not simply measure each stride, which would be wildly inaccurate. If you have a Garmin Watch then a Garmin Footpod is an excellent upgrade.

   1 Accuracy
   2 Calibration
   3 Cadence
   4 Using a Garmin Footpod
   5 Troubleshooting

1 Accuracy

Out of the box, a Footpod is typically accurate to 90+% and after calibration this typically improves to 98-99%. This compares well with the accuracy of GPS which is 97-98%. However, a Footpod only gives you this accuracy on smooth surfaces where your stride is reasonably predictable. You do need to make sure the Footpod is well attached to your shoe; if it's bouncing about the accuracy will be poor. If you do trail running, I found the accuracy can be rather patchy. Of course if you're running a twisty trail with tree covered, you may find the accuracy of GPS dropping to 80-95%. I have found that a Footpod provides vastly more accurate information for your current pace compared with GPS. While the errors in the GPS signal even out over the course of a run, they can result in a current pace that is inaccurate by 1-2 minutes/mile. 2 Calibration

You can calibrate a Footpod against a known distance, or against GPS. In both cases a longer distance will provide greater accuracy as small variations will even out. I have written a Garmin Foot Pod Calibration utility to simplify the process. Calibrating against a known distance is far superior to calibrating against GPS because GPS has its own level of inaccuracy. 3 Cadence

The Footpod will provide an accurate display of your Cadence, which is a critical and often overlooked aspect of running. 4 Using a Garmin Footpod

If you have a Garmin 910XT, 310XT or 610 then it is possible to display your current pace from the Footpod while getting other data from the GPS. I believe this is the optimal configuration for most runners. In addition, I found that turning the GPS off and relying on the Footpod dramatically increases the battery life of a Garmin watch. 5 Troubleshooting

There are relatively few things to go wrong with the foot pod.

   Make sure the Footpod is attached to the same position on the shoe each time you run.
   The Footpod needs to be reasonably well attached so that it moves with your foot. If it's flapping around you get inaccurate readings.
   The most common problem you have with the Footpod is a low battery level. A low battery warning should be displayed on your Garmin watch, but I've had problems before the battery warning was displayed.
   If you're still having problems after replacing the battery, then the Footpod has probably failed. I've had this happen to me twice, which may just be bad luck. 

For more information on this topic please visit the following: Suunto Quest, Suunto M5 and Suunto heart rate monitors