Rentals in Boulder
Boulder Paddle Shop
Boulder Outdoor Center
There are other shops outside of Boulder
Boulder Creek (west end of town)
Clear Creek in Golden (about 20 minutes south of Boulder)
Lyons (about 20 minutes north of Boulder)
friendly runs near Boulder (after work types of runs)
Boulder town run (starts in play park down through town, usual take outs
short run - Library
just a tad longer - Boulder High School
longer runs - 30th street, Foothills parkway, etc.
Clear Creek - put in right above first tunnel (below old dam) you end up in the Golden play park.
NSV has a class IIIish section above town. Not sure of the water levels (anyone from Lyons want to make a comment?)
A bit of a drive but close enough:
Poudre - Lower Mish (III), Filter plant (II+) - outside of Fort Collins
South Platte - Foxton (III). With favorable traffic, 90 minutes from Boulder
If you are have a full day, I would probably suggest the Pourdre, Foxton, Lower Blue.
If you have 2 days, I would suggest hitting the Ark (Browns, Fractions/Frog Rock)