Napa/St. Helena -- The quieter northern end of the valley is an ideal place to rent a bicycle and ride the Silverado Trail. St. Helena Cyclery, 1156 Main St. (tel. 707/963-7736; www.sthelenacyclery.com), rents bikes for $10 per hour or $35 a day, including rear rack, helmet, lock, and bag in which you can pack a picnic.
Calistoga -- Cycling enthusiasts can rent bikes from Getaway Adventures/Wine Country Adventures (tel. 800/499-2453 or 707/568-3040; www.getawayadventures.com). Full-day group tours cost $149 per person, including lunch and a visit to four or five wineries, $195 per person for private groups of six or more. Bike rental without a tour costs $30 per day plus a $45 delivery fee to Napa Valley locations. You can also inquire about the company's kayaking and hiking tours.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.