Lakeside National Little League in Lakeside operates four competition-grade baseball fields at 10030 Marathon Parkway, set within a tree-shaded complex along the San Diego River corridor. Four real-grass diamonds and turf fields accommodate simultaneous games during spring and fall seasons, with a concession stand and adjacent picnic tables serving the same family-outing crowd that fills Yogurt Barn on Channel Road after weekend doubleheaders. The complex includes standard dirt infields with padded dugouts and a playground tower with slides for younger siblings during practice and game days. Tournament weekends draw visiting teams from across San Diego County, and out-of-area families requiring overnight accommodations find the closest lodging at Lakeside Hotel on River Street, less than two miles from the fields. A public walking trail alongside the San Diego River channel extends from the parking area, with the full complex encompassing four diamonds, batting cage areas, and ADA-accessible pathways across the riverfront property.