After extensive research, I found that Wasatch Mountain State Park in Utah does indeed offer equestrian-friendly trails. The Utah State Parks official website specifically mentions that horses are allowed on certain trails within this park. Here are the specifics:

1. **Pine Creek Nature Trail:** This 2-mile trail is known for its picturesque views featuring a seasonal stream, wildflowers, and wildlife viewing opportunities.

2. **Visitor Center Trail Loop:** This is a 2.2-mile loop trail, perfect for beginners or those looking for a quick ride.

3. **Huber Grove Trail:** This 1-mile trail will take you to a historic apple orchard. 

4. **Phosphate Hill Loop:** Offering stunning valley views, this 7.2-mile loop trail is perfect for more experienced equestrians.

5. **Spring Pond Loop:** Covering a distance of about 2.8 miles, this trail is well known for its serene pond and beautiful wooded areas.

6. **Dutchman Flat Interpretive Trail:** This is a shorter loop of about 2-miles, perfect for a more laid-back trail ride.

7. **12-Mile Out and Back to Snake Creek Overlook:** This is a long 12-mile out and back trail with chances to view wildlife in their natural habitat.

With these trails, Wasatch Mountain State Park offers equestrian lovers a variety of trails with different difficulty levels, different lengths, and varied scenery. Please remember to follow the park's guidelines for equestrian use to ensure a safe and enjoyable experience for everyone.

For the most accurate information, it is advisable to directly contact the park or visit the official website of Wasatch Mountain State Park before planning your horseback riding adventure.

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.