20" to 26" - What to change?

I´d like to know what should I have to change in my unicycle in order to reduce my effort to run long distances.

I live in Brazil and there´s no uni´s dealers over here. I´ve bought a 20" and made a transformation, I enhanced the frame and changed everything that was necessary, I changed the cranks as well (now it has a 150mm).
I think I would have a muni, 26", but I just thought…

I did it thinking that would be fine to ride for long distances, but, unfortunately, it doesn´t work, altough the “set” is bigger the the 20", I have to do the same effort, I mean, I have to pedal a lot.

I hope you can understand my problem, it´s hard to explain even in my native language.

Thanks in advance.

You need a bigger wheel and frame.

Maybe someone would trade with you?

The bigger the wheel the easier it is to go further. If your seat is comfortable, that’s a big help. 26" to 36" is great for distance. I ride 6 km daily on a 24" muni with a 2.5" wheel. It all depends on what you want to do.

Like I said in your other thread, just put your old (smaller) cranks back on. the 150s are slowing you down.

125mm is a good starting point if you are new to road riding on a larger wheel.