8:45 am: Marathon

It may be the baby of big-city marathons (only 15 years old compared to Boston’s 113-year tradition), but the L.A. Marathon is more than just a big race. There will be the Acura Bike Tour of the course at 6 a.m., the wheelchair division races at 8:20 and 8:33 a.m., a 5K run/walk at 9:30 a.m. and entertainment along the course, from Chinese lion dancing to gospel music. And then there’s the big race--with 20,000 participants, including Kenyan Simon Bor, who is back to defend his title. Last year, he ran the 26.2 miles in 2:09:25, faster than some of us drive during rush hour.

* L.A. Marathon XV starts at 8:45 a.m. at Figueroa and 5th streets downtown and ends at the Los Angeles Public Library, at Flower and 6th streets. (310) 444-5544. Internet: https://www.lamarathon.com.

11 am: Festival

The Afro-Cuban jazz band Grupo L.A. Cuba will headline the fifth annual Clay Day Art, Music and Dance Festival at Scripps College in Claremont on Sunday. The festival will also feature an exhibition of international contemporary ceramics; arts and crafts for children, including clay workshops; artists demonstrating hand-built and wheel-thrown ceramic techniques; and special music and magic entertainment for children. Food and refreshments from Claremont restaurants will be available.

* The Clay Day Art, Music and Dance Festival, the courtyard outside the Williamson Gallery, Scripps College, 11th Street at Columbia Avenue, Claremont, 11 a.m. to 4 p.m. Free. (909) 607-3397.

2&7pm: Music/Comedy

At the bright age of 91, pianist-humorist Victor Borge returns for two shows at the Cerritos Center with his unique blend of musicianship and comedy.

* Victor Borge appears at the Cerritos Center for the Performing Arts, 12700 Center Court Drive, Cerritos, 2 and 7 p.m. $47 to $57. (562) 916-8500.

3 pm: Music

Michael Tilson Thomas brings his San Francisco Symphony south this week. The orchestra plays a Mendelssohn-Shostakovich program with violin soloist Chee-Yun at the Orange County Performing Arts Center Sunday and plays a different program at the Dorothy Chandler Pavilion Wednesday.

* The San Francisco Symphony, Segerstrom Hall at the Orange County Performing Arts Center, 600 Town Center Drive, Costa Mesa, 3 p.m. Sunday. $15 to $55. (949) 553-2422. Also 8 p.m. Wednesday at the Dorothy Chandler Pavilion, 135 N. Grand Ave., downtown Los Angeles, $10 to $70. (323) 850-2000.

3 pm: Jazz

The grand Spanish baroque concourse of Los Angeles’ Union Station will echo with jazz piano as keyboardist Monty Alexander leads his trio in this latest concert in the Chamber Music in Historic Sites series, presented by the Da Camera Society of Mount St. Mary’s College. The Jamaican-born pianist, who has worked with Ray Brown, Dizzy Gillespie and Sonny Rollins over the years, will present tunes from Frank Sinatra’s as well as Bob Marley’s repertoires in this grand setting.

* Monty Alexander Trio, Union Station, 800 N. Alameda St., 3 p.m. $27 to $34. (310) 954-4300.

7 pm: Theater

“Forbidden Broadway Y2K L.A.!,” Gerard Alessandrini’s latest comic revue, skewers Broadway musicals “Ragtime” (“Gagtime”), “The Lion King” (“Can You Feel the Pain Tonight?”), the all-male “Swan Lake,” “Fosse,” “Cats,” “Chicago” and many other hit shows.

* “Forbidden Broadway Y2K L.A.!,” Tiffany Theater, 8532 Sunset Blvd., West Hollywood, 7 p.m. Regular schedule: Tuesdays through Saturdays, 8 p.m.; Sundays, 7 p.m.; Saturdays, 5 p.m.; Sundays, 3 p.m. Ends May 28. $37.50 to $39.50. (310) 289-2999.

7 pm: Music

Cliburn Competition gold medalist Jon Nakamatsu is soloist in Rachmaninoff’s Rhapsody on a Theme of Paganini at the annual gala concert by the American Youth Symphony at the Dorothy Chandler Pavilion. In the soloist’s spotlight, pianist Nakamatsu is joined by actor Gene Barry, who will narrate Copland’s “Lincoln Portrait.” Alexander Treger conducts.

* American Youth Symphony, Dorothy Chandler Pavilion, 135 N. Grand Ave., downtown Los Angeles, 7 p.m. $10 to $60. (310) 234-8355.

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Freebie: The Santa Monica College Emeritus College Band will perform music by such composers as John Philip Sousa and Walter Boudreau, Westwood United Methodist Church, 10497 Wilshire Blvd. 3 p.m. (310) 474-5271.

The Pomona College Orchestra plays Beethoven’s Symphny No. 1 and music from Tchaikivosy’s “Sleeping Beauty” at Bridges Hall of Music, 150 E. Fourth St., Claremont. 3 p.m. (909) 607-1496.