Originally Posted by Cyclesafe
I bailed 6/11 from Lander headed north on the TransAm. I quit as a consequence of the weather: there's no point of touring if you can't see the scenery because of the clouds and the snow/rain on your glasses. And I was facing a 5000 foot climb up the Togwotee Pass! I had driving snow on the Lizard Head, Monarch, Hoosier, Loveland, passes and on the Trail Ridge Road. This year has been weather CRAZY!
Already planning for the GDR next year but I think I'll start (N to S) in mid-July.
Don't do it north to south.
I have a few disagreement with Adventure Cycling and this is one of the biggies.
In the north, the period of heaviest precipitation is May-June and some of if may come as snow if it is a cool, late spring. If anything, the roads and trails will still be muddy. Late summer is drier with thunderstorms every third or fourth day, lovely meadows filled with wildflowers.
In the south, May-June is the end of the dry season. The weather is warm - sometimes even hot, but the roads have been at their driest for four months. The summer monsoon begins in mid-June and continues thru August. There is nothing worse than getting stuck on a bentonite road that is a sea of glue.
Two months is plenty of time.
If you start in early to mid June in the south, you can have the best possible weather all the way.
Plus - winds tend to be southerly - although that is less of a factor on the GDMBR.
PS - This has been one of the coldest, wettest springs in memory in the Intermountain West.