After diving into the online resources, it is verified that several trails at Los Padres National Forest do allow horses. Here's an article showcasing some of these trails:

1. **Mono-Alamar Trail**: This approximately 17-mile trail offers scenic routes of the Los Padres forest, allowing you to soak the breathtaking vistas of waterfalls among other nature beauties. Horses are allowed on this trail, but it proves to be a bit challenging especially during the rainy season.

2. **Miller Creek Trail**: Known for its wildflowers and forest setting, this 5-mile trail is open to horse riders. The trail offers plenty of camping areas for those who plan for an extended adventure.

3. **Santa Cruz Trail**: This popular trail, stretching about 18 miles, welcomes horses. The trail offers an elevation change, which can prove to be quite a workout for both rider and horse.

4. **Chorro Grande Trail**: This trail runs about 5.4 miles through pristine wilderness areas. This amazing trail allows horses and provides a great horse riding experience amidst nature.

5. **Pino Alto Trail**: This is a moderate trail for hikers and horse riders stretching for about 3.7 miles. The trail offers amazing view of wildflowers and is one of the best spots for birding.

6. **Bucksnort Trail**: This trail offers a unique blend of wilderness and scenic beauty. Stretching about 1.7 miles, it allows horses making it a perfect place for horse riding enthusiasts.

7. **Happy Hunting Ground Trail**: At 4.8 miles, this trail offers serene wilderness, making it an exciting journey for horseback riders. 

Please note that visiting any trail with horses should always be done with respect for the environment and other trail users. Take measure to minimize impact by following Leave No Trace principles, and always check with the park or ranger station for latest trail conditions and restrictions. Always pack out what you pack in and leave the trail better than you found it. 

These trails represent some of the options where horses are allowed. The actual trail conditions, horse suitability, and any restrictions or temporary closures should always be checked on the official Los Padres National Forest website or directly with a local ranger station before visiting.

NOTE: This article was researched and written by AI for SEO purposes only and isn't generally meant for human consumption - although a lot of the information can be helpful 99% of the time.  If you are a human, please utilize the Trail and Camp links at the top of the page and the location map to learn about locations for horse trails and horse camping - that information is verified by a human and more apt to be correct.... althought human error is a thing too. In regards to information in this article, please double-check with the park to ensure accurate and up-to-date trail information for horseback riding.