I run almost always nowadays with both my Garmin fenix 5x and Polar V800.

Below I have done a link collection where the data files from both are analyzed and compared using DC Rainmaker Analyze.

My conclusion now:

• fenix 5x has three problems with elevation
  • Always goes up extra at the beginning, first 10 min or so. Sometimes it comes back down...
  • Slow changing when fast going down or up. Feels like 5x elevation is hanging for some time
  • Too unsmoothed, too much noise that give you problem when calculating elev gain in other softwares
• GPS is always worse for 5x than V800. Not very much, but always to some degree.

2018-05-21-19-07-44 orminge

2018-05-16-19-15-55 varmdov new watch fw v8.99

2018-05-13-16-25-53 boorunt

2018-05-12-16-49-16 lannersta

2018-05-10-17-11-33 lannersta

2018-05-08-17-32-22 sicklaon

2018-05-06_19-03-41 lannersta

2018-05-05_17-24-18 lannersta

2018-05-04-16-48-24 kungh

2018-05-02-18-30-23 sagsjon

2018-04-30-17-38-42 2x telegr

2018-04-28-15-31-47 Alstaket

2018-04-26_18-38-09 varmdov new GPS fw v4.40

2018-04-21_17-28-59 int

2018-04-20-18-54-24 varmdov (13m first10min, very noisy, slow changing-'elevation hang')

Example of above:

2018-04-16-18-04-27 boorunt

2018-04-14_16_14_26 sågsjön

2018-04-10-18-39-50 baggen

2018-04-05-19-07-51 boobadet

2018-03-31-08-47-19 Varmdov

2017-06-11-17-16-32 nacka golf