Round Valley in Brentwood, CA is a park that exudes feelings of expansiveness. Best visited in March - April time frame when the valley is lush green.

Best Months to Visit: During spring, valleys are lush green and creeks have water. So best months are March — April. Valleys would be green in May too but temperatures would be higher. If you visit during rains, trails would be muddy.

Notes: Miwok Trail is part of the 32-mile Briones-Diablo Trail.