The 26x1 (650C, ISO 571mm) road rim used on tri and some small frame road bikes.
The 26x1-1/2 (650B, ISO 584mm), an obsolete European size making an attempted comeback.
The 26x1-3/8 (ISO 590mm) used on department store and old 3-speed bikes.
The 26x1-3/4 (ISO 571mm) used on Schwinn cruisers.
Finally, the 26" MTB rim (ISO 559mm) used on most modern mountain bikes and some hybrids and Touring bikes.
I assume you expect the MTB (559mm) rim is common where you are going but you should check out what's really used.
This message was edited by DaveB on 2-7-05 @ 8:08 PM