Mountain biking is a sport which consists of riding bicycles off-road, often over rough terrain, using specially adapted mountain bikes. Mountain bikes share similarities with other bikes, but incorporate features designed to enhance durability and performance in rough terrain. There are many areas around Purdue and surrounding towns. A few are listed below.
Location: 96th St on North side of Indy Location: Danville, IL / Drive Time: 1 ¼ hours Location: Logansport, IN Location: Portage, IN Location: South Bend, IN Info: Unknown Indiana Outfitters Hoosier Mountain Biking Association 
Town Run
Drive Time: 1 hour
Review: This is the spot for starting out in my opinion. This has a lot of turns, a couple steep climbs, and slightly changing terrain (dirt to sand). Very fast trail when weather is right, trail is on the White River so flooding can be a problem. It’s just a great ride any time. 
Kickapoo
Really fun place to ride. The trail is twice as hard as Town Run due to hard steep climbs. There are two deep valleys to cross, which can be quite fearsome. The last section (unless you want to do section of death) is a super sweet fast downhill, where you can easily get up to 25 mph, just watch out for that one poorly placed tree! Kickapoo presents some of the more advanced mountain biking in Mid-West. Also trail markings are a bit hard to ollow so keep a map on you! More Info...
Logansport
Drive Time: 45 min.
Review: Before you even set foot on a trail you will have to throw down .50 big ones to bike here. What else can you do with that money? Buy a tube or a water bottle or some lube or a bunch of Cliff shots or 6 totino’s frozen pizzas or a 6 pack. My point, I do not agree with the high fee of biking here. Then again I was chased out of the park for protesting this fee so I’m biased…
More Info...
Imagination Glenn
Drive Time: 1 ½ hours
Review: Not a bad trail. Markings were very hard to follow (i.e. one arrow was in the middle of a creek). Pretty good terrain, would consider it a bit more on the hard side due to quick changing terrain.
Rum Village
Drive Time: ~ 2 hrs
Review: Trail is VERY hard to locate, it’s in the middle of a subdivision sort of. Trail needs to be maintained better, if it was would make an awesome trail. Overhanging vegetation is the biggest problem here. Could be a beginner trail, but be ready to sweat it out due to some long hill climbs in the later ½ of the trail.
Shades State Park
McCormick Woods (Purdue)
Review: Personally I like this trail. It has some fallen logs across the trail with other logs packed onto them making a little obstacle. It can be really muddy
after a little rain.
LINKS
Simply put the BEST collection of trail info for Indiana that I have come across.
This organization are keeping the trials open for us, as well as creating new ones. I think every biker should consider joining. It’s protecting the sport we love.
Town Run
Kickapoo
Logansport
Imagination Glenn
Rum Village
Wapehani
Shades State Park
LINKS