It's a good place for a beginner mountain biker (there are some pretty wide trails with not too crazy inclines), if you want trails more suited for biking I'd head to hartshorne woods. Either way, I would definitely hike the trails first to get a better idea of where you're at. Horses are sometimes on the trails too.
I have only been on the two smaller trails and i would say that they are only meant for foot traffic your best bet. Would be either to go and walk some of the longer trails to get an idea or call thompson park office and ask. They say bikes but i havent seen one bike there. Hawthorn park by the light house has biking trails and i have seen bikes there. Maybe someone else will answer your question
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