is that an MTB trail system?

Yes. Day's River Trail. There is 3 miles of singletrack that can be ridden in either direction. It is pretty easy. Great for kids or just a fun ride. There is also 8-9 miles of xc ski trails that are good for biking. The ski trails are divided into 5 stacked loops. Loops 1 & 2 are pretty easy. Loops 3-5 get harder due to some pretty steep hills. Most people ride the ski loops counter clockwise but you can go either direction. My ride was loop 4 of the ski trail and the single track in the easier direction. You often see hikers and people walking dogs on the ski trails.

thanks! my family has a house in Manistique and ill be up there next weekend so im looking for good MTB or gravel routes in the area.

Bruno's Run and Valley Spur are both good MTB locations. Bruno's is beautiful loop https://ridewithgps.com/routes/43019348 Valley Spur, up by Munising, has more than 20 miles of singletrack. Here is my collection of Gravel Routes https://ridewithgps.com/collections/2928713?privacy_code=0aV0Jg5urTYOP34fKfOI6HfchuBwsDi6

If you haven't been to Seney Wildlife Refuge, you might try that. Should be lots of birds this time of year. Hike to see Benny the Beard Fisher at the campground across the road for a fun finish to your ride.

i rode sceney last year it was nice except for the bugs lol. ill check out your route collection, thanks !