Obviously anyone holding any of these records is a superhuman. But could someone explain to me why there should be different records for 30-34 and 35-39? It's not even clear to me which you would expect to be quicker! We're not talking developing juniors or veterans.
It just follows the UCI masters age grouping which is done in 5 yr bands all the way up. 30-34 is in fact no longer a category which you can race at World Masters (but British National Masters have it), but the records are still retained.
Obviously anyone holding any of these records is a superhuman. But could someone explain to me why there should be different records for 30-34 and 35-39? It's not even clear to me which you would expect to be quicker! We're not talking developing juniors or veterans.