About the Midpeninsula Regional Open Space District

Calendar of Activities

Enjoy the many free Outdoor Activities on Midpeninsula Regional Open Space District preserves. All activities are led by trained volunteer docents and are free of charge. Some activities require reservations. Please refer to the Reservation Information page for full details.

Reservation Process:

Reservations for a given activity are only accepted within the two-week time period prior to the activity date. The maximum number of people allowed for a group reservation is four (4) people. The online reservation forms activate in the individual listings two weeks prior to the date of the activity.

  • If your plans have changed after you have made a reservation and you are no longer able to attend, please let us know so that we can release your reservation to someone else.

  • For all activities, heavy rain at the activity location will cancel that activity. In the event of light rain or the threat of rain, the docent will make the decision at the designated meeting time and location.

  • Emails and voicemails regarding activities are not monitored after hours or over the weekends, but will be processed the next business day.

Show me activities for:



Start Time


04/25/2014 Reservation Required 'Esence' of Light 6:00  pm Skyline Ridge Moderate Hike
04/27/2014 Primavera en las Montañas – Español 10:00  am Long Ridge Moderate Hike
04/27/2014 California Newts 10:00  am Monte Bello Moderate Hike
04/27/2014 Reservation Required Geology 101: The San Andreas Fault 12:00  pm Los Trancos Easy Hike
04/27/2014 Enjoying Spring Wildflowers 1:00  pm Pulgas Ridge Moderate Hike
04/30/2014 Explorer Hike: Wildflowers and Bluebirds 10:30  am Fremont Older Moderate Hike



Start Time


05/03/2014 World-Class Wildflower Walk 10:00  am Russian Ridge Easy Hike
05/03/2014 In Full Bloom 10:00  am Sierra Azul Moderate Hike
05/04/2014 Earthquake Walk 2:00  pm Los Trancos Easy Hike
05/07/2014 Explorer Hike: South Route to Black Mountain 10:30  am Monte Bello Moderate Hike
05/10/2014 Reservation Required Banana Slug Redwood Ride 10:00  am Purisima Creek Redwoods Intermediate Mtn. Bike Ride
05/10/2014 Wingding Family Fest 10:00  am Skyline Ridge Easy Hike
05/11/2014 Water Music and The Buddha 11:00  am Los Trancos Moderate Hike
05/11/2014 Wildflower Bouquet for Mother’s Day 1:00  pm Russian Ridge Moderate Hike
05/13/2014 The Redwood That Got Away 10:00  am El Corte de Madera Creek Strenuous Hike
05/15/2014 Third Thursday: Long Ridge 10:00  am Long Ridge Moderate Hike
05/17/2014 Reservation Required Introductory Geocaching Family Hike 10:00  am Los Trancos Easy Hike
05/18/2014 Spring Flowers 10:00  am Thornewood Moderate Hike
05/18/2014 Under the Fir Trees 1:00  pm El Corte de Madera Creek Strenuous Hike
05/18/2014 Reservation Required Fremont Older House and Garden Tours   Fremont Older Easy Hike
05/21/2014 Explorer Hike: Wildflowers of Woods Trail 10:30  am Sierra Azul Moderate Hike
05/24/2014 The Butterflies of Picchetti Ranch 10:00  am Picchetti Ranch Easy Hike
05/25/2014 Reservation Required Ethnobotany 101: The Ohlone Way 11:00  am Skyline Ridge Easy Hike
05/26/2014 Reservation Required 28th Annual Hike the Open Spaces 8:45  am Monte Bello Moderate Hike
05/31/2014 Reservation Required Move with the Animals 2:00  pm Skyline Ridge Easy Hike

SPRING (March, April, May)

Full Outdoor Activities Listing and Schedule

At-a-glance Listing

Special note:

If you have a group of 4 or more people who would like to attend a docent-led activity listed in Outdoor Activities, please contact the Docent Programs Coordinator at (650) 691-1200 to discuss in advance. Other arrangements may need to be considered for your group.

  Additional Information

Easy Hike Easy Hike
Moderate Hike Moderate Hike
Strenuous Hike Strenuous Hike
Easy Nature Ride Easy Nature Ride
Intro Bike Ride Intro Mtn. Bike Ride
Intermediate Bike Ride Intermed Mtn. Bike Ride
Adv Bike Ride Adv Mtn. Bike Ride
Kids Kids
Reservations Required Reservations Required

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