Mile Square Regional Park
Mile Square Regional Park is a 607-acre urban park in Fountain Valley with fishing lakes, playgrounds, sports fields, an archery range, a nature area, golf, walking and biking paths, and extensive picnic space. Recreational facilities on the portion leased to the City of Fountain Valley also include tennis and pickleball. The park is undergoing a major expansion that is transforming former golf course acreage into new public park space.
The expansive open space is popular for family gatherings, sports and spending a day outdoors. Visitors should note that the 93-acre Expansion Area is currently under construction and closed to the public, with completion anticipated in spring 2027.
Mile Square Regional Park Expansion
OC Parks is transforming 93 acres of the former Mile Square Golf Course into additional public park space. Phase 1 opened in 2023, while Phase 2 construction is underway. Plans include a Great Meadow, amphitheater, children’s Adventure Play Area, multi-use field, new roadway and parking, and a restroom building. The Expansion Area is expected to reopen when Phase 2 is completed in spring 2027.
The expansion adds more trees and open space to the park. A separate 2026 regional park tree-planting project includes several hundred new trees across Mile Square, Mason and Irvine regional parks.
Originally agricultural land, Mile Square Park was converted to military airfields used for training during and after World War II. The Navy Department leased the land to the County of Orange, and the first phase of Mile Square Park opened in 1970. Phase 2 opened in 1973, and the third phase opened in 1976.
Mile Square Regional Park Details
Address: 16801 Euclid St., Fountain Valley, CA 92708
Park Hours: Daily, 7:00 a.m. - 9:00 p.m. spring-summer; 7:00 a.m. - 6:00 p.m. fall-winter
Parking: $3 per vehicle Monday-Friday; $5 Saturday-Sunday. Higher fees may apply on holidays or during special events.
Phone: 714-973-6600
Website: https://ocparks.com/parks-trails/mile-square-regional-park
Email: milesquare@ocparks.com
Dogs: Allowed on leash
Know Before You Go
The Nature Area is open daily from 7:00 a.m. to 3:00 p.m. Anglers age 16 and older need a valid California fishing license. Dogs are permitted on leash. The 93-acre Expansion Area is closed during construction, so access and parking patterns near the project may change.
What’s At Mile Square Regional Park
Fishing Lakes
There are two fishing lakes to choose from within the park. Mile Square Regional Park is great fishing for Rainbow Trout, Largemouth Bass, Bluegill, Crappie, Catfish and Carp. Fishing is permitted in both lakes and they are stocked regularly. A fishing license is required for everyone 16 and over.
Mile Square Park hosts an annual Kids Fishing Derby for kids ages 6 to 15 to fish for free and a chance to win prizes.
The largest lake, Freedom Lake, is located near the corner of Edinger and Euclid. The smaller lake, South Lake, is located near Warner and Euclid. Freedom lake has two islands, one of which can be accessed by a pedestrian bridge to explore the path through the trees.
You can also opt to reserve a concession-operated paddle boat to cruise around on the water. The Swan Boat rentals are operated by Wheel Fun Rentals near the large lake and can be rented for $11 per hour, per person for adults and $6 per person, per hour for kids 17 and under.
Archery Range
An archery range is available within the park with classes held regularly. The range is open to the public free of charge, from 7:00 a.m. to sunset daily (closed every Thursday 7:00 a.m.-11AM for maintenance). Large groups are required to make a reservation and a fee is required. There are 24 shooting lanes with targets, a shade structure for shooters with bow racks, a 20-foot safety berm, and perimeter fencing. The archery range is first come first serve, and you must bring your own equipment. Shooting lanes have varying distances to accommodate all abilities.
Find information and rules for the Archery Range here.
Nature Area
The 15-acre Nature Area is open daily from 7:00 a.m. to 3:00 p.m. Packed-dirt trails wind through trees and around a small pond, providing opportunities for walking and wildlife viewing. The Nature Area also includes Camp Sycamore, a reservable youth-group camping area for children ages 6 to 12 with restrooms, a picnic shelter, tables, barbecues, sinks, a campfire ring and tent space.
Sports & Play Areas
Mile Square offers a wide range of recreation, including golf, volleyball courts, soccer fields, baseball and softball diamonds, playgrounds and a fitness par course along 1.5 miles of paved walking paths. Reservations are required for soccer fields. Golf facilities include a regulation 18-hole course and the David L. Baker executive course.
Pickleball & Tennis
Pickleball is available on the City of Fountain Valley recreation portion of Mile Square Park. The Fountain Valley Tennis & Pickleball Center offers outdoor pickleball seven days a week, with court fees varying by time of day. Indoor open pickleball is also offered on select mornings at the Fountain Valley Recreation Center gym. Check the City of Fountain Valley’s current pickleball schedule and fees before visiting.
Freedom Hall Badminton & Table Tennis
Freedom Hall offers free badminton and table tennis on Saturdays and Sundays from 8:00 a.m. to 4:00 p.m. on a first-come, first-served basis. Hours and availability can change for special events, so check with OC Parks before visiting.
There are three playgrounds in Mile Square Regional Park. There is a large play area by the lake (Freedom Lake) nearest to Edinger and Euclid with a splash pad that operates during summer months, a second play area in the middle of the park, and the third is located near the smaller lake (South Lake) by Warner and Euclid.
Concession-operated bike rentals are available in the park, with options that may include cruisers, kids bikes, surrey cycles and specialty cycles. Paddle boat rentals are also offered at Freedom Lake. Rental hours, locations and pricing can change seasonally, so confirm availability before visiting.
Golf Courses at Mile Square Park
10410 Edinger Ave., Fountain Valley, CA 92708
714-418-2152
- Par 62, 3,825-yard executive golf course
- Night golfing available until 10:00 p.m.
- Practice center with lighted 32-stall driving range
- Clubhouse
- Baker's Park Place Banquet Center
- Baker Parkside Bar & Grill
- Full-service golf shop
- Golf pros for private and group instruction
10401 Warner Ave., Fountain Valley, CA 92708
714-962-5541
- Par-72, 6,714 yard premier course
- On-site restaurant
- Lighted driving range
- Clubhouse and banquet facilities
- Pro Shop
- Golf instruction
Mile Square Park Amenities
- Archery
- Ball Fields
- Barbeques
- Bike Rentals
- Bike Trails
- Camping
- Dogs Permitted on leashes
- Fishing
- Fitness Par Course
- Interpretive Programs
- Paddle Boat Rentals
- Picnic Areas
- Picnic areas (tables, restrooms)
- Picnic shelters for reservation
- Playgrounds
- Restrooms
- Shelters
- Soccer Field
- Volleyball Courts
- Weddings Special Events
Mile Square Regional Park Events
Mile Square Regional Park hosts recurring nature programs, stewardship cleanups, archery instruction, birding walks, family activities and other seasonal events. Upcoming 2026 programming includes Makers Square nature activities, Introduction to Archery sessions, birding walks and stewardship cleanups. Check the official OC Parks calendar before visiting for current dates, registration requirements and cancellations.
- Nature and family programs
- Archery classes and introductory sessions
- Farmers Market
- Free Christmas Concert
- OC Parks Summer Concert Series
- OC Tet Festival
