There are pee breaks sometimes, but in 3 years of racing I've only experienced 3 pee breaks.

As for pacing, it depends on terrain, length, category, and the mood of the collective. Usually a flat 60 miles is almost crit speed, but I've done a few where no one really wants to mix it up. They'll chase down the occasional attack and sit up. I've done hilly races where everyone rolls along at 22 mph waiting to fly up the hill, and others where the whole pack wants to get a head start and it's constant attacks.

But in general I think of a road race as a kind of slow motion crit. Efforts are often longer, guys dangle OTF longer, hills are often longer, guttering crosswinds are longer, fatigue takes longer but it still comes eventually. Road races are more endurance oriented (try and do a big anaerobic effort after 3 hours out there) and crits are like smash everyone to bits hope you are strong enough to still have a sprint at the finish.