there,s always the 1300 mile sri chimnoy race in america, 130 mile badwater race through death valley, spartak ultra in greece, there's the jungle ultra in brazil thats just been on, check out eventrate, nearer home there's the 145 mile grand union canal race and also the new 175 mile marathon of britain, don't think that just because they are here in england they are any easier, the marathon of britain saw temperatures reaching 100, hot enough to match any desert run,