Riva del Garda -- A convenient point of embarkation for a lake outing is the beach next to the castle, where you can rent rowboats or pedal boats for about 7€ ($9.10) per hour (buy 2 hr., get a 3rd free); from March to October, the concession is open daily 8am to 8pm.
For a more adventurous outing, check out the sailing and windsurfing at the Sailing Du Lac (formerly the Nautic Club Riva),Via Rovereto 44 (tel. 0464-552-453; www.sailingdulac.com), where you can rent windsurf equipment for 42€ ($55) per day, 37€ ($48) for a half-day, or 18€ ($23) for an hour. Multiday and weekly packages, as well as lessons, are also available.
You can rent bikes from Superbike Girelli, Viale Damiano Chiesa 15 (tel. 0464-556-602), for 13€ ($17) per day for a mountain bike; or from Cicli Pederzolli, Viale dei Tigli 24 (tel. 0464-551-830), which charges 8€ ($10) per day for a city bike and 13€ ($17) for a mountain bike.
Two-Wheeling Limone -- Rent a mountain bike in Limone sul Garda at Tombola Rent, Via L. Einaudi 1B (tel. 0365-954-051). Rates are 11€ ($14) for 5 hours, 17€ ($22) for a full day (6am-10pm). They also rent scooters starting at 22€ ($29) for 3 hours, 29€ ($38) for 5 hours, and 38€ ($49) for a full day.