4) (GPS watches are known for giving incorrect distance for certified, surveyed 400m tracks.)
Also… GPS watches and other electronics interfere with the successful, accurate reading of timing chips.
#GPSWatchInaccuracies
Also… GPS watches and other electronics interfere with the successful, accurate reading of timing chips.
#GPSWatchInaccuracies
August 19, 2026 at 6:34 PM
4) (GPS watches are known for giving incorrect distance for certified, surveyed 400m tracks.)
Also… GPS watches and other electronics interfere with the successful, accurate reading of timing chips.
#GPSWatchInaccuracies
Also… GPS watches and other electronics interfere with the successful, accurate reading of timing chips.
#GPSWatchInaccuracies
3) As example: Over a marathon distance, a two percent inaccuracy rate means
more than eight hundred metres difference between
the true physical distance and
what the device is deriving from the satellites.
#GPSWatchInaccuracies
more than eight hundred metres difference between
the true physical distance and
what the device is deriving from the satellites.
#GPSWatchInaccuracies
August 19, 2026 at 6:34 PM
3) As example: Over a marathon distance, a two percent inaccuracy rate means
more than eight hundred metres difference between
the true physical distance and
what the device is deriving from the satellites.
#GPSWatchInaccuracies
more than eight hundred metres difference between
the true physical distance and
what the device is deriving from the satellites.
#GPSWatchInaccuracies
2) Even a static location might be off dozens of metres.
The inaccuracy of non-military GPS devices might have been a reason behind the initial response from #EdmontonMarathon organizers regarding August 16 observations.
#GPSWatchInaccuracies
The inaccuracy of non-military GPS devices might have been a reason behind the initial response from #EdmontonMarathon organizers regarding August 16 observations.
#GPSWatchInaccuracies
August 19, 2026 at 6:33 PM
2) Even a static location might be off dozens of metres.
The inaccuracy of non-military GPS devices might have been a reason behind the initial response from #EdmontonMarathon organizers regarding August 16 observations.
#GPSWatchInaccuracies
The inaccuracy of non-military GPS devices might have been a reason behind the initial response from #EdmontonMarathon organizers regarding August 16 observations.
#GPSWatchInaccuracies
1) For what it is worth (given recent #EdmontonMarathon #ThingsThatMakeYouGoEff )…
non-military GPS devices are not "accurate", being off 0.6 percent to two percent depending on a number of factors (including the proximity of trees and buildings).
#GPSWatchInaccuracies
non-military GPS devices are not "accurate", being off 0.6 percent to two percent depending on a number of factors (including the proximity of trees and buildings).
#GPSWatchInaccuracies
August 19, 2026 at 6:33 PM
1) For what it is worth (given recent #EdmontonMarathon #ThingsThatMakeYouGoEff )…
non-military GPS devices are not "accurate", being off 0.6 percent to two percent depending on a number of factors (including the proximity of trees and buildings).
#GPSWatchInaccuracies
non-military GPS devices are not "accurate", being off 0.6 percent to two percent depending on a number of factors (including the proximity of trees and buildings).
#GPSWatchInaccuracies
5) For more on #GPSWatchInaccuracies, please see tinyurl.com/nhdebvc3 ,
tinyurl.com/me2njx43 , and
tinyurl.com/46x4ywx5 .
#GPSWatchHeadaches
tinyurl.com/me2njx43 , and
tinyurl.com/46x4ywx5 .
#GPSWatchHeadaches
How Accurate is your GPS Watch?
Find out what factors might affect your GPS watch's accuracy with this peer-reviewed study's findings. Your watch is better than a smartphone, though.
tinyurl.com
August 19, 2026 at 6:35 PM
5) For more on #GPSWatchInaccuracies, please see tinyurl.com/nhdebvc3 ,
tinyurl.com/me2njx43 , and
tinyurl.com/46x4ywx5 .
#GPSWatchHeadaches
tinyurl.com/me2njx43 , and
tinyurl.com/46x4ywx5 .
#GPSWatchHeadaches