A few hike suggestions for this weekend, courtesy of the East Bay Regional Parks District (click on the links to sign up; note some have fees):

Saturday:

• Spring Splendors Hike at Bishop Ranch, 2-4pm – Bishop Ranch Open Space, San Ramon
• Trekking at Trampas, 8:30-12:30pm – Las Trampas, San Ramon
• Sun, Seasons, Earth and Ecosystem Hike, 11:30-2pm – Chabot Space and Science, Redwood, Oakland Hills, Fee and Registration Required
  

Sunday:

• Sunol Sunday Hike, 1:30-3 pm – Sunol Regional Park, Sunol
• Vasco Caves Regional Preserve Hike, 9-2pm – Round Valley or Brushy Peak staging area, Fee and Registration Required
• Ohlone History Hike, 10-noon – Garin Regional Park, Hayward
• Wildflower Hike, 1:30-3:30pm – Garin Regional Park, Hayward
• Chi Gung and a Walk, 9-10:30am – Sunol Regional Wilderness, Sunol
• Babies and Toddler Stroller Walk, 3:15-4:45pm – Crab Cove, Crown Beach, Alameda