Yes in designated trails.
Yes
From their website: "Bicycling within the national preserve is allowed on the following roads and trails: Fire Prairie Trail Established roads Designated off-road vehicle trails Nobles Grade (Nobles Grade is the raised road north of Mile Marker 63) Levee 28. You can access Levee 28 from Mile Marker 51, off I-75 and from the S-12A structure off US-41 at the preserve's eastern boundary."
There isn't..
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