Barn Culture has a detailed page that lists trail riding areas. It is listed alphabetically so it might take some time to look up a local trail in your area if you are not familiar with the name of the regional or state park. It could turn out to be a great resource for you for areas to ride that you had not heard of before. The website is also having a contest where they are giving away a new saddle pad if you sign-up 15 friends. I am so sorry that I don’t know 15 fellow horse owners or riders so I can sign them up. Back in my boarding stable days I could, but not anymore.
The website seems newer and has a nice news page that has press releases from mostly the English riding world. There is a horse video section but when I clicked on it I got the message “members only area”. So you have to sign-up for that. Becoming a member is free and there are private chat areas for members.
It seems like a decent site but as a webmaster I have to say they need to fix their Google ads to ban certain ads that are appearing on their site. When I visited there were at least “chat with a sex starved blonde” and “looking for love or sex” ads on there. I hope they fix it as it does distract from a nice overall looking site.
