Sounds as if you want the chair for distance use but not necessarily to sit in, but what Lumia_black has said about fatigue is true for me too.

I sit in my wheelchair all the time, can't sit comfortably in anything else, even though I can walk short distances most of the time. The extra bracing I get for my back, arms, legs and feet makes me less tired. For years I tried an upholstered armchair for sitting and found that getting up and out of it or sitting in it was wearing me down.

I do core-strengthening exercises but even with them, I guess my muscles aren't doing their job very well.

Anyway, if you want the wheelchair for sitting, you probably want a sturdier chair than the lightweight ones usually are.

I got a replacement chair a year or so ago and thought I wanted a lightweight chair but soon learned that that wheelchair weight has its purpose. It keeps you more stable. My new chair turned out to be only a couple of pounds lighter than the old one, mainly because there are no legrests--just footrests.

It also has pop-off wheels and so in a way turns out to be lighter than my old one because it can be loaded into a vehicle in smaller segments. When you lift the mainframe, you don't have to lift the wheels along with it.