Here are the links to several more local Convivium websites.  They are alphabetized by city.  

Visit the links, then visit the Convivia!

Slow Food Asheville – http://www.slowfoodasheville.org
Slow Food Baltimore - http://www.grapeevents.com/slow_food_baltimore.htm
Slow Food Bella Berkeley - http://www.food-culture.com/bella
Slow Food Boston - http://www.slowfoodboston.com
Slow Food Chicago – http://www.slowfoodchicago.org
Slow Food Denver – http://www.slowfooddenver.com
Slow Food Eugene - http://www.slowfoodeugene.org
Slow Food Flagstaff – http://www.environment.nau.edu (homepage of Convivium Director Gary Nabhan)
Slow Food Houston - http://www.slowfoodhouston.org
Slow Food Iowa – http://www.slowfoodiowa.org
Slow Food Kansas City – http://www.slowfoodkansascity.com or http://www.slowfoodkansascity.org
Slow Food Los Angeles – http://www.slowfoodla.com
Slow Food Madison – http://www.slowfoodwisconsin.org
Slow Food Marin – http://www.slowfood-marin.com
Slow Food Michiana – http://www.slowfoodmichiana.com
Slow Food Monterey Bay - http://www.slowfoodmontereybay.org
Slow Food New Orleans – http://www.neworleansslowfood.com
Slow Food Outer Banks - http://www.outerbanksslowfood.com
Slow Food Central Pennsylvania – http://www.slowfoodcentralpa.com
Slow Food Philadelphia - http://www.slowfoodphiladelphia.org or http://www.slowfoodphilly.org
Slow Food Pittsburgh – http://www.slowfoodpgh.com
Slow Food Portland - http://www.slowfoodportland.com/
Slow Food Puget Sound – http://www.sfps.us
Slow Food San Francisco – http://www.slowfoodsanfrancisco.com
Slow Food Santa Cruz I (It’s About Thyme)– http://www.slowfoodsantacruz.com
Slow Food Santa Cruz II (Bountiful) – http://www.slowfoodsantacruz.org
Slow Food Seattle - http://www.slowfoodseattle.org
Slow Food Silicon Valley – http://www.slowfoodsv.com
Slow Food Tucson – http://www.slowfoodtucson.org
Slow Food Wisconsin SE – http://www.slowfoodwise.org
Slow Food Yolo - http://www.slowfoodyolo.com

And from the wider world…

Northern California Regional Convivia – http://www.slowfoodnortherncalifornia.org
Slow Food USA – http://www.slowfoodusa.org
Slow Food Austria - http://www.hundlinger.at/slowfoodaustria
Slow Food Ireland - http://www.slowfoodireland.com
Slow Food The Netherlands - http://www.slowfood.nl
Slow Food International – http://www.slowfood.com
Slow Food Foundation for Biodiversity - http://www.SlowFoodFoundation.org

Also, some Slow Food events have their own individual websites:

Field to Family – http://www.FieldToFamily.org
The Golden Glass - http://www.thegoldenglass.com
Terra Madre – http://www.terramadre2004.org
Salone del Gusto - http://www.salonedelgusto.com
Westward Slow - http://www.westwardslow.com