Celebrate Earth Day by clearing out the historic lemon grove to prepare it for restoration and interpretation.

Fourth graders and their families can get their Fourth Grade Adventure Pass, then learn about birds in this open-house-style activity. Swing in before noon.

Learn about the park through songs, games, jokes, and skits. Every campfire ends with s’mores. RSVP: 714-524-2471.

Ask a Naturalist or get a hike suggestion. Touch tables available until 11 a.m.

Self-guided walks around the park are a great way to add to the iNaturalist app. Walk a trail, snap photos of plants and insects, and upload to help science!

The Shrub Club continues restoration on the Science Nook and Discovery Trail. All ages and abilities welcome to help. RSVP: 714-524-2471.

Ask a Naturalist or get a hike suggestion. Touch tables available until 11 a.m.

California State Parks Junior Ranger program has a new look and new design. Check out this 2026 version of an old favorite.

Park at the Barn. State Park volunteers will help your scouts with their adventures and badge requirements with leader input.

Join Chino Hills State Park and West Valley Search and Rescue for Hiking 101 on Bane on your way into the park. Enjoy trivia, games, and hiking preparedness!

On the last Friday of the month, we welcome historians, naturalists, scientists, and enthusiasts to talk on park-related topics. See the “Naturalist Announcement” on Instagram and Facebook on the first of each month.

Learn about the park through songs, games, jokes, and skits. Every campfire ends with s’mores. RSVP: 714-524-2471.

A self-led activity. Look at the interpretive panels at the overlook, enjoy an early picnic, take a quiet hike, or time to reflect. Enjoy the flowers and the sun.

Hike and bike Chino Hills State Park with family and friends. Sign up for the Fourth Grade Adventure Pass before coming to enjoy free parking for the student’s chaperone.

The Shrub Club continues to focus on the wild habitat at the Discovery Center. Join us to bring this habitat back to life. iNaturalist photo safari after.

Ask a Naturalist or get a hike suggestion. Touch tables available until 11 a.m. Learn how to use iNaturalist to help science and discovery.

Bring mom to the park for a walk through the end of wildflower season before heading to your Mother’s Day plans. Perfect for Mom, Not-the-momma, pet-moms, and teachers accidentally called “mom” every day.

California State Parks Junior Ranger program – 2026 version of an old favorite with a new look and new design.

Park at the Barn. State Park volunteers will help your scouts with their adventures and badge requirements with leader input.

On the last Friday of the month, we welcome historians, naturalists, scientists, and enthusiasts to talk on park-related topics. This month: fascinating jumping spider evolution.

A self-led hike where you record the animals, plants, and insects in the park and upload them to iNaturalist. See Instagram for details.

Self-guided walks around the park are a great way to contribute to the iNaturalist app. Walk a trail, snap photos of plants and insects, and upload to help science!

Come to the Discovery Center to sign up for the Fourth Grade Adventure Pass to get access to 54 state parks until August 31, 2026! We will talk everything summer!

Learn about the park through songs, games, jokes, and skits. Every campfire ends with s’mores. RSVP: 714-524-2471.

Connect with the land and learn how humans work together to create a legacy of preservation. Open to all ages and abilities. Meet at the Discovery Center at 8:30 a.m. for an introduction to the park, then a 1-mile, moderate guided hike through chaparral and riparian habitat, and a stop for bird watching at our favorite shady nook. Binoculars available to borrow while supplies last. Bring water and a snack. Dress for the weather.

Wrap up the spring season with one last hike. Catch late bloomers, appreciate what spring brought and left behind, and take in one last spring-weather hike.

California State Parks Junior Ranger program – 2026 version of an old favorite with a new look and new design.

Park at Horse Camp. Meet at the Bane Canyon Rd Trailhead. Bring water and a snack. Dress in layers.

Learn about bird migration and what summer looks like at Chino Hills State Park. Celebrate the new season and changes to come.

On the last Friday of the month, we welcome historians, naturalists, scientists, and enthusiasts to talk on park-related topics. This month: connecting agricultural impact with environmental justice.