Boulder:
Vecchio's <-- steel/lugged/vintage focus in a modern shop University Bicycles (see the "museum") Pro Peloton <-- pro/race specialist
Just down the Turnpike, in Denver:
Turin <-- a classic shop, even if there's not much classic stuff there anymore Cycle Analyst <-- vintage specialist Schwab Cycles <-- pro/race specialist, some classic orientation Wheatridge Cyclery <-- pay homage to Ron Keifel, whose wonderful dad started the shop, and who often can be found there; old race posters and photos
I ride a 58 to 60, and I've got plenty of bikes lying around -- let me know if you need a steed. I can also provide 55-57 bikes. Email me directly if interested. Bring pedals and shoes.
Cheers,
Peter Bridge
15 minutes from Boulder, CO