Bicycling is allowed on the marked trails. Please refer to our website for a trial map and information on temporary closures. www.sjrwmd.com/lands/recreation/twelve-mile-swamp
I've seen different entrances with parking areas so I'm sure you could ride a bike down those trails. Prob flat terrain and should bring a handheld gps in case you get lost.
Thanks! Your answer is awaiting moderation.