Toughest hiking in the woild?

[Mr. X]

Tastes great...Less filling!

No one is as stupid as all of us.

 

[Gris]

Deep dry sand - gets my vote for hardest!

 

[Pete_Hickey]

Here,

DD=

AHR-RHR​

hd (t)​

where RHR = resting hr

Much better. At least it's more objective. But, some people, seeing a bear on the trail may have their hardest hike on a smooth easy trail.

 

[Oldsmores]

...The penitentes in the Andes look harder then anything I have dealt with here...

I can vouch for that - imagine hiking through a field of spikes set closer than the width of your boots, some of which break off, some of which don't. Definitely not fun!