Originally Posted by ridesapaintedpony
It basically was a general question. My friend lives near a mountain that is 2500 ft. And he wanted to ride up there but we wondered about the elevation. He had recently hiked up there and experienced shortness of breath and was wondering if it affected horses the same way.
Around here 2500 ft is not a mountain, it's a mine
Seriously, a 2500 foot change in elevation (I'm assuming your friend started near sea level, and hiked to a 2500 peak?) should not be enough to cause problems. I live at about 5000 ft, and regularly hike to 10,000 and above. It seems more likely that any shortness of breath is just from the hiking. 2500 ft is a pretty good elevation change for a day hike - I get to puffing a bit regardless of whether I start from home elevation, or a trailhead above 8000 ft.
Or it could, of course, be a symptom of some physical problem. Does the friend get short of breath when s/he puts out an equivalent effort on the level?