Sounds miserable. I took the shuttle around last year from the south to north rim. Don't think I saw a single cyclist out there.

If you want to do a double century in the middle of the desert, go for it. But it's basically just all rural highway with minimal views and like 2 gas stations the entire way. Lots of abject poverty and run down areas that you pass through too

Just do R2R2R....

You will have more fun and it will take just as long, or maybe bike from N to S then hike back?

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http://www.TriScottsdale.org

That's actually what I was thinking of doing. Bike S to N one day, rest one day, and run one of the trails back. I was just trying to see if anyone has actually biked it and if it's feasible or whether car traffic is too fast/dangerous for that. The 10-ish miles that I drove on the south rim side seem to be very bikeable with respectable drivers. Weren't sure if the other 200 miles were like that :)

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My marathon PR is "under three, high twos. I had a two hour and fifty-something."

Well if you end up doing it LMK how it goes.... I may have to tackle that as well

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http://www.TriScottsdale.org