The Autism Speaks Walk, the largest autism fund-raising event in the nation, will take place on Saturday, April 26 at the Rose Bowl Stadium. Approximately 50,000 are expected to participate. Walkers and runners will arrive between 7-10 a.m. As a result, the Arroyo will be closed from 8:30 a.m. to 1 p.m. and Brookside golf course will be closed. Vehicle access into the Arroyo will be via West Drive to Seco Street, and Washington Boulevard to West Drive. These streets will be open at all times for vehicular traffic, and barricades will be in place on the streets adjacent to the stadium. The bulk of the traffic will be incoming between 7:30-9:30 a.m. Expect traffic delays during this time.

Garden tours, events and classes set for this weekend 

• ON SUNDAY: The Garden Conservancy will once again sponsor Open Days in the San Gabriel Valley on Sunday, April 27 from 10-3. Arlington Garden will again be the lead garden at which you may buy tickets, obtain maps and tour the beautiful Arlington garden before visiting the six private gardens on tour. All the gardens on tour are new to Open Days this year except for one garden in San Marino that was on many years ago. For more information, contact Martyn Belmont at martynbelmont@aol.com 

• ON SUNDAY: Japanese garden again opens to public, features harpist. The Storrier Stearns Japanese Garden again invites all to experience the tranquility that results from the timeless principles of Japanese garden design from 10 a.m. to 4 p.m. on Sunday, April 27. Also, Pasadena resident and award-winning harpist Carolyn Sykes and some of her featured students will perform the soothing music of the harp beginning at noon. Reservations are not necessary, but can be made for $7.50 on the garden's website (click on blue headline). Admission at the gate is $10 (cash or checks only) and children 12 and under are admitted at no charge. The garden is wheelchair accessible. Sunday's event coincides with The Garden Conservancy's annual "Open Days" tour of outstanding gardens in Pasadena. 

• ON SUNDAY: PCG presents composting class. Pasadena Community Gardens will hold a free (no charge) class in garden composting at 10 a.m. on Sunday, April 27 at Pasadena Community Garden, 721 S. Pasadena Ave. Leading the class will be Master Gardener Norma Bonilla, who has extensive expertise in helping others create a composting system in new growing spaces for community gardens, school gardens and local communities. Bonilla is a Certified Soil Advisor and the founder of  SOILOVE and co-founder of the Venice Community Garden and the Tarzana Community Garden. She is a Permaculture Design course graduate and a UCCE Certified Master Gardener. Street parking is available on South Pasadena Avenue, Bellefontaine Street and St. John Avenue. $6 parking is available across the street at Huntington Hopsital's Della Martin Parking Lot. To reserve your spot, RSVP to Cathy Morrison at cjmorrison22@gmail.com

City prepares for 41st annual Pasadena Mayor's prayer breakfast
The 41st Pasadena Mayor's Prayer Breakfast will be held on Wednesday, April 30, in the ballroom of the Pasadena Convention Center, 300 E. Green St. Doors open at 6:20 a.m.; the event starts promptly at 7 a.m. and concludes at 9 a.m. Parking is available at Paseo Colorado mall, with the first 90 minutes free, as is underground parking at the convention center ($10 flat fee/up to 16 hours.)