Waterproof (Rain) Pants

Also check out the 96g Houdini pant from Patagonia.  I just got the Houdini jacket and was impressed with the new DWR coating using it in a minor sleet storm.  I doubt it would stay so water resistant for the long haul but will be a valuable piece of gear and half the weight of my previously superlight shell.

I had Marmot Essence pants (~180g) for riding for a few years that worked well in short stints of really bad weather.  Any one of your choices should work well for your trip.  Just make sure the leg wont get caught in the chainring or you could crop them into knickers to guarantee they wont.

Also worth consideration are the Montbell Versalite pants: 103g, 2.5 layer, and 15-denier nylon.

Thanks @jakomait and @feetfirst for the suggestions. Will look into them.

With rain pants, I like the full zip option because I’m often hiking in non rain gear and I like the versatility of donning on the pants and taking them off without having to wrestle with my shoes.  I have the marmot precip.  it weighs 12 ounces so it’s on the heavier side but worth it.

https://www.rei.com/product/863401/marmot-precip-full-zip-rain-pants-mens

I haven’t use the specific product, but have been impressed with Alpkit items in general: https://www.alpkit.com/products/parallax-mens

I used Versalite pants on several occasions. Pretty impressive piece of gear. Not easily breakable but still very light and “breathable”. No pockets though. Probably that Inov-8 is another thing to try out.