Originally Posted by
pdlamb
The good news is that traffic is generally pretty light until 10-11:00, after which the RVs are cranked up and cars loaded. Out by 8:00 in the morning, you should have little trouble getting 30 miles in before traffic ramps up. That's before Labor Day, after that, traffic is lighter still.
This is very true. If you're riding in the morning, you'll have the roads to yourself. Get up even earlier (sunrise or so), and you'll also be more likely to see wildlife.
I'd avoid Old Faithful on a bike, and if you do bike to Old Faithful, don't try to leave right after the eruption; just wait for 45 minutes to try to go anywhere from there.