I'm planning on riding in the 35-39 sport class at the Downieville Classic. Not sure about hydration strategy but my current plan is to ride with a 50 oz camelbak filled with water/minerals on my back and a bottle with electrolytes on the bike. I'm hearing temps will be touching the low 90's so I don't think that is unreasonable but it sure seems like it will be a load for the long climb up. Not sure if I can stash something towards the top or try to get a refill at one of the feed stations. I'm suspicious that 75 oz will not be enough for the whole ride but I just don't know. I am new to this race and I have no idea where to find water and how much will be available, perhaps some of the veteran racers out there have some ideas?