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Harry Griffen Regional Park

Part of East County, our guide to El Cajon, La Mesa, Santee, Lakeside and Alpine.

Harry Griffen Regional Park, at 9550 Milden Street in La Mesa, has nature trails, an amphitheatre and reservable sites. The City of La Mesa page says the Nature Trails, except the North Loop, are closed during Helix Water District construction from September 21 through November 20. The page, read October 23, 2026, did not show the year.Checked October 23, 2026.

Sept 21–Nov 20Most Trails Closed
North LoopException to Closure
Not ConfirmedOpening Hours
OnlinePark Permits
Address9550 Milden Street, La Mesa, CA 91942.
Closure Notice“Nature Trails (Except North Loop) are closed during Helix Water District construction from September 21 through November 20.” Read October 23, 2026. The year is not shown in the text we read.
What It HasNature trails, an amphitheatre and reservable sites. The city park list also names Canine Corners Dog Park.
HoursNot confirmed. The page text we read gives none.
AdmissionSee event site. The page says park permits can be obtained online for reservations.

Trail Closure

The notice says the closure runs through November 20. Whether it ends on schedule is not confirmed, so check the City of La Mesa page before you go.

Harry Griffen Regional Park Open the map. © OpenStreetMap contributors.

What We Could Not Verify

  • Year of the trail closure notice: not shown. We assume it is current but have not verified it.
  • Opening hours: not confirmed.
  • Playground details: not confirmed.
  • Whether the closure ends on schedule: not confirmed.
  • Map point is approximate (OpenStreetMap), not a surveyed entrance.

More in East County

FAQ

Are the trails open at Harry Griffen Park?

Not most of them. On October 23, 2026 the city page said Nature Trails except the North Loop were closed from September 21 through November 20, with no year shown.

Sources

  1. City of La Mesa: Harry Griffen Regional Park

Checked October 23, 2026 by It’s San Diego. Cite this page: It’s San Diego (itssandiego.com), checked October 23, 2026. Free to quote with a link to this page; tables are licensed CC BY 4.0.