Sadly I have a major impediment to participation. Laziness. Having said that, I hope you find some worthy competitors and wish you all the best of luck. I'm going to lie down now, the thought of that much energy expended has made me exhausted :)

Does it include meters travelled in a wheelchair ?

As long as S Health tracks it.. don't see why not.. :D

I am genuinely surprised more people aren't taking up this challenge. 

Probably a wise move.. considering the amount to walking I do a day.. lol..

But seriously.. challenge still on.. ;)

I would but i'm lucky to get between 6 - 10,000 steps each day.  that is what happen when you are on your butt for 8 hours a day and then use weight machines and exercise bike.

Im a keen competetive walker and often do that in a week!!

Whats your S Health user name

I'm dubious about the accuracy of S-health's pedometer function (accelerometer based).

It gives me wildly different (33% CV) step counts for my walk to work each day.

How have other found it?

Just reading the forums on android central- sounds like its a bit of a mission to add anyone. I have privately messaged the user to try and sort out

Waay better with a tracker.. I got the gear s2 and works pretty well.. seems accurate.. but then again its not like I count every step.. lol..