Glendora is best explored by car, as public transportation can be limited. Car rentals are available at nearby airports, with costs varying depending on the rental company, seasonal and demand fluctuations. Alternatively, ride-sharing services such as Uber or Lyft provide convenient transportation options. Travel time between attractions is generally short, with parking accessible at most places.
If you have more time, consider taking a day trip to nearby cities such as Pasadena, San Dimas, or Claremont. If you have less time, try a half-day itinerary such as visiting the Bonelli Regional Park in the morning and the Rancho Santa Ana Botanic Garden in the afternoon. Don't forget to bring sunscreen and comfortable walking/hiking shoes for your outdoor adventures.