Mill Valley's baseball community is anchored by Mill Valley Little League, which plays across several Marin fields including Boyle Park. Ross Valley Little League uses fields in Fairfax and Larkspur (with Albert Park in San Rafael for night games). For families looking to get kids into a Marin youth baseball program or scout a good field for weekend practice, here's what's close to Mill Valley.
1. Boyle Park Baseball Field (Mill Valley)
Location: 301 E Blithedale Ave, Mill Valley, CA 94941
Mill Valley👶 Best for all ages💲 Free🚗 0.3 miMill Valley Little League's home diamond — three minutes from downtown Mill Valley: Boyle Park is the primary home field for Mill Valley Little League spring and fall seasons. At 300 feet from downtown, it's the most walkable baseball diamond in southern Marin. Five tennis courts, picnic tables with barbecue grills, and a children's playground round out the park. The city's 2026 master plan includes 13 park upgrades — the baseball facilities are part of the improvement scope.
Good to know: ball fields, tennis courts, playground, picnic areas, restrooms.
Parent tip: Free access. Baseball fields open for general use outside Mill Valley Little League schedules — weekday mornings are typically clear. The 2026 pump track (Mill Valley Parks' top priority) will be added near the park — check cityofmillvalley.gov for construction status.
For current hours and seasonal closures, see the official Boyle Park Baseball Field page.
2. Albert Park (San Rafael)
From Mill Valley, it runs under 10 min door-to-door — San Rafael's roads are straightforward from the highway.
Location: 98 Albert Park Lane, San Rafael, CA 94901
Marin County's most historic ballpark, four miles from Mill Valley: Albert Park's diamond has anchored Marin youth baseball since 1950, with San Rafael Little League Juniors still using it for organized programs. Bocce ball courts, tennis, and a playground make it a full park visit even when no game is scheduled.
Good to know: ball fields, playground, bocce courts, tennis courts, picnic areas, restrooms, parking.
Parent tip: Natural turf fields open February through October. Free parking. Weekday mornings are the clearest open window for casual use outside league schedules. Contact San Rafael Recreation at 415-485-3333 for field availability. Wednesday evening RVLL games under lights are the prime spectator event.
Hours and amenities shift with the season — confirm today's on the Albert Park city page.
3. West Marin Little League Fields — Mill Valley (Mill Valley)
Location: 50 Thalia St, Mill Valley, CA 94941
Mill Valley👶 Best for ages 4–16💲 Free🚗 0.5 miSpring and fall youth baseball for Mill Valley kids ages 4 to 16: WMLL's Mill Valley diamond at 50 Thalia Street is where the city's Little League families build their spring schedule. The three-site county structure keeps away-game travel under 15 minutes for most Mill Valley families.
Good to know: ball fields, restrooms, parking.
Parent tip: Registration opens in fall for spring season — check westmarinlittleleague.com. For open practice time outside league schedules, early weekday mornings are typically clear. Call ahead to confirm before driving if you're planning an informal session.
How we picked these
We focused on publicly accessible fields with active youth league use and family-friendly amenities — parking, restrooms, and sideline space. We verified current program schedules and general-access windows.Planning your visit
Youth baseball spring season runs February through June; fall ball August through October. Fields are available for general use outside scheduled league times — early weekday mornings are the best open-access window. For more events near Mill Valley this week, see the Mill Valley events page.For more kids' events near Mill Valley this week, see the Mill Valley events page.
Mill Valley Baseball Fields — Frequently Asked Questions
What are the best baseball fields for kids near Mill Valley, CA?
Our 2026 guide picks 3 standout baseball fields within about 20 miles of Mill Valley. The top picks include Boyle Park Baseball Field, Albert Park and West Marin Little League Fields — Mill Valley — each chosen for kid-friendly layout, parent reviews, and how well it holds up on a weekend visit.
Are baseball fields near Mill Valley free?
Yes — every baseball field in this guide is free to visit. You won't need tickets or a reservation for Boyle Park Baseball Field, Albert Park, West Marin Little League Fields — Mill Valley or any of the other picks.
What is the closest baseball field to Mill Valley?
Boyle Park Baseball Field is the closest pick at under a mile from Mill Valley. It's the easiest one to fit into a weekday afternoon — short drive, low commitment, easy to leave early if the kids melt down.