What are you looking for? You might check out http://www.minnesotacyclist.com/
check out the events calendar.
There's a fair number of bike paths around if that's what you're interested in, some state trails can be found here:
http://www.dnr.state.mn.us/state_trails/list.html
http://www.cannonvalleytrail.com/
Being in St. Paul you're close to the Gateway which is a nice trail although I feel the west end of it can be a bit dicey due to the neighborhood.
Check out the St. Paul Classic bike ride in September. They close most of the streets on the routes for this one which is nice.
http://www.spnec.org/bike_classic/
Here's a little more info:
http://www.minnesotamonthly.com/spon...ng/events.html
http://mnbiketrails.com/index.asp