General rating system
Easy peasy: this hike is mostly flat and footing is not too rough; anyone should be able to do it.
Easy: this hike has some ups and downs or may be a little rough, but is easy for most hikers.
Middling: this hike is rough or has some elevation changes, but you can do it.
Moderate: this hike may have more elevation changes or be more rough; if you have mobility or stamina problems, you might want to work up to this one.
Tougher: this hike or part of it was almost too hard for me at this time, either because it was too steep or had some other type of hazard, but it is not impossible for someone younger or a little more fit
Difficult: this hike was too hard for me at this time, either because of steepness or footing, but not impossible for someone younger or more fit
Panting dog rating
The number of panting dogs indicates roughly how many times I had to stop to pant on this trail.