Elevation change: 188 ft. for Toftrees Fitness Trail Turnaround. 220 ft for full Cedar Cliff Run.
Average Grade: 2%. Notable hills: 
 

The start of the Toftrees Railroad Trail Runs is the same as that of the Heritage Oaks Loop, the Wal-Mart Loop and the East Aaron Loops. Start in front of Rec Hall and run northwest on the walkway that passes the Nittany Lion Inn heading toward Park Avenue. Carefully cross Park Avenue and immediately go left on North Burrowes. Two blocks later, go right on Adams Avenue. Take Adams all the way to McKee St. and take a left. Pass Joe Paterno's house (the last house on the left before Sunset Park) and then head down the bike path that begins at the end of the parking lot for Sunset Park. This bike path connects the neighborhoods of College Heights and Overlook Heights, but crosses a deep ravine (part of "Big Hollow").

At the bottom of the hollow, make a right on the Toftrees Railroad Trail. At this point the trail is paved with finely crushed stone and is an excellent running surface. Continue on the Toftrees Railroad Trail as long as you like, then turn around and go back to Rec Hall the way you came. When you get to the Toftrees Golf Course, the trail is in the open for a while with many golf paths branching from it. The trail itself keeps going and it should be obvious how to stay on it. Here are out-and back mileages to some landmarks on the trail:

(1) The paved part of the trail ends just after crossing the University owned part of East Aaron Drive and about a quarter mile before passing under the bridge for Rt 322. Running to the far end of the viaduct before turning back gives you a 4.5 mile run.

(2) Continue about another 2/3-mile past the bridge for Rt. 322 to the marked Toftrees Fitness Trail. If you turn back here, you'll have run about 5.8 miles. The first profile below and the blue mileage markers on the map refer to this run.

(3) If you make it to Toftrees Avenue before turning around, you'll have a 6.7 mile run.

(4) Go all the way until the trail spills out onto Montauk Circle in the Cedar Cliff development. Run a clockwise loop through Cedar Cliff on Montauk Circle and Manhasset Drive, pick up the trail again, and head back. This run is 10.2 miles.The second profile below and the red mileage markers on the map refer to this run. If you skip the amble through the development, you'll have run about 9.6 miles.

Variations:

(1) There is a trail in the woods along side the bike path from Sunset Park to the Toftrees Railroad Trail. Taking this trail to the Toftrees Trail cuts about 0.1 mile off the route each way. It's a treacherous downhill, and a very challenging uphill.

(2) Take the Toftrees Fitness Trail as it parallels the Railroad Trail. This trail is about 0.1 miles longer each way.

(3) Take the 4 Hills Alternative. Head east from Rec Hall on Curtin Rd. Make a left on Bigler Rd. Cross Park Avenue and bear right with the road. After passing the Salvage Building, make a left on the Big Hollow Rd. which  heads down hill. About a quarter mile down the hill is a gate, which marks the start of "4 Hills", a series of gentle drops. At the bottom of the hill, as Big Hollow Rd bears right, go left on the dirt road. This road bears left and becomes Aaron Drive. It crosses the Toftrees Trail about 0.1 miles from Big Hollow Rd. Taking this alternative route adds about 0.15 miles each way.
 

Total elevation change: About 120 ft of climbing and descent.
Average Grade: 2%. Notable hills:
 

A map of the old course can be found here.

Elevation change: 143 ft. 
Average Grade: 2%. Notable hills: 
 

Start in front of Rec Hall and head down Curtin Rd., dodging students all the way to Porter Rd., next to Beaver Stadium. Hang a right on Porter Rd. and continue down the hill to the entrance road for the outdoor track. Make a right, and then a left on the next road. At the top of the hill, make a right on Hastings Rd. Continue on Hastings Rd., crossing University Dr. Now come the variations:

Short Loop: Continue on Hastings after crossing University Dr. At the intersection of Hastings, Bigler and McKean, bear left on McKean Rd McKean Rd. to Shortlidge Rd. Make a left on Shortlidge Rd., then a right on College Ave. Take College Ave to Burrowes Rd. and make a right. Finish by barrelling up the steep hill on Burrowes Rd. to Rec Hall.

Medium Loop: After crossing University Dr., make a left and run on the bike path to College Ave. Run on College Ave. to Hetzel St. Make a left on Hetzel St. Take Hetzel to Prospect Ave. and go right. Half a mile later, make a right on Allen St., then a left on the next street, Fairmont Ave. Take Fairmont to Burrowes Ave. and finish by barrelling up the steep hill on Burrowes Ave. to Rec Hall. 

Long Loop: Start as if running the Medium Loop. At Garner and Hetzel, make a left on Garner and head down the steep hill to Easterly Parkway. Make a right on Easterly and start the long, shallow climb back home. As Easterly Parkway crosses Atherton St, it becomes Westerly Parkway. Exercise caution at all intersections on Easterly and Westerly Parkways. Continue on Westerly Parkway past State College High School, Welch Pool, and Our Lady of Victory Church and School. The last part of the trudge up Westerly is the steepest. At Corl Rd, make a right. Take a right at Beaver Avenue, then the a left at Osmond St. Go right on College Ave and carefully cross the street. Cut across the parking lot of O. W. Houts and head down the alley that parallels College Ave. Make a left on Patterson St. A block later, go right on the University road near the graduate student housing. A few hundred yards later, make a left on the continuation of Barnard St that heads toward the back of the IST building. Follow this to White Course Rd, continuing as it winds right to Atherton St. Finish at the light on Curtin St., across from Rec Hall.

Long Loop Option:  After crossing University Dr., make a left and run on the bike path to College Ave. Run on College Ave. to the light that crosses the street and then care as you wind back up the access loop to University Drive. (Going down the dip and crossing College at the light is a bit safer than staying on University and going over the bridge, which has no sidewalk). Continue on University as it heads downhill to Easterly Parkway. Make a right on Easterly and finish the Long Loop as described. In this option, the downhill on University Avenue is longer and less steep than that on Garner Street. The total loop distance is slighlty shorter with the option.

The campus and side streets have relatively light traffic, but you should stay on the sidewalk when on Curtin Rd. and Burrowes Rd. on campus, and Westerly and Easterly Parkway on the Long Loop. And you should exercise cauiton when crossing College Ave. and Beaver Ave. downtown. 
 

Elevation change: 112 ft. for Inner Loop, 135 ft. for Outer Loop.
Average Grade: 2%. Notable hills: 
 

Inner Loop Start: Start on N. Atherton St. directly across from Rec Hall and head south. Make a right on the path along the parking lot next to the athletic fields and the ARL Water Tunnel. Go left at the end of the lot and head between the ARL buildings to the long parking lot that parallels W. College Ave. (This first part of the run is identical to the end of the Golf Course Perimeter run, done in reverse. This roundabout meandering through alleys and parking lots keeps you off of busy W. College Ave. as much as possible.) Continue along the parking lot/alleyway until just before the start of the cinder golf course path behind Nittany Beverage and make a left at Patterson St. Make an immediate right at the next alley (leading to O. W. Houts). Cut across the Houts parking lot and cross W. College Ave. A block later, make a left on Osmond St. Go left on Corl St. and take that two blocks to Westerly Parkway, where you make a right. The next street is Madison St., where you go left. Your mapmaker, Marty Mazur, lives at 313 Madison. Madison St. ends at Myrtle St. Go right on Myrtle and left on McBath St, a short block later. This is where the Outer and Inner Loops merge.

Outer Loop Start: Begin running the Golf Course Figure 6 loop in reverse. Start on N. Atherton St directly across from Rec Hall and head north. Follow the Penn State Golf Course bike path as it makes a left on Park St. At the bottom Park St, the path continues on to Corl Road (Do not follow the part of the bike path that heads off to the right. That's a different running route.) . Follow the bike path as it curves to the left along Corl Rd. About 150 yards later, after cresting a short hill, there will be a road on the left that leads toward some golf course service buildings and the Blue Course clubhouse. Make this left and follow the road as it winds past a parking lot, the clubhouse, and parts of the Blue Golf Course. The Clubhouse Road finally exits the golf course nearly a mile later onto W. College Avenue. Make a left and carefully cross the street. Make the next right at Middle St. The street forks a block later. Take the left fork onto McBath St. and continue two long blocks to Myrtle St., where the Outer and Inner Loops merge.

The Finish. Now for some more zig-zagging: Make a right on Fairchild Lane, then a left on Highpoint Cove. Go right on Broadmoor Lane and continue to where it ends on Blue Course Drive, making a left. You're done zig-zagging. Follow Blue Course about a quarter-mile to the entrance to Orchard Park, which is at the corner of Blue Course Drive and Bayberry Drive. Get on the bike path. This path winds through the park and part of the adjoining neighborhood, and then goes through the south athletic fields of the State College Area High School (the track is on top of the small hill to the left). When the bike path meets Westerly Parkway, carefully cross the street on continue on the path as it heads up a very steep rise. The path ends on Gill St at the top of the steep part, but the hill keeps rising for a couple more blocks. Continue on Gill St., carefully crossing Beaver Ave. and W. College Ave. Gill St. ends in a parking lot for some businesses. Here you can take a path to the adjacent University lots (where you started the run), and finish as you started.
 
Winter Route: During the winter, the bike paths can be snow covered and icy. Though the part of the Outer Loop that must be run on a bike path is relatively short and can be traversed when there is a light snow cover, there is no convenient way around the Golf Course bike path in more treacherous conditions. The Outer Loop must be avoided during the worst parts of winter. You can keep running the Inner Loop all winter, however. You can avoid the icy bike path in Orchard Park by taking the following alternate route. At Blue Course Dr and Bayberry Drive, make a left on Bayberry instead of running on the Orchard Park bike path. Make a right at Saxton Drive. Continue on Saxton until it ends at Westerly Parkway. Cross Westerly, make a left, and then go immediately right on West Hamilton Ave. Take Hamilton to Gill St and make a left. Finish as above. The Winter Route adds 0.1 miles to the either Orchard Park Loop.

Total elevation change: Over 200 ft.
Average Grade: 2%. But that's average. Here are some of the bigger hills:
 

After making the obligatory hooting sounds through the tunnel, bear left on the footpath that starts just past the exit of the tunnel. This path goes through the woods for just under a quarter mile. It T's at the gravel part of Big Hollow Rd. Make a left here. Continue on Big Hollow Rd to Fox Hollow Rd. Go left at Fox Hollow Rd, crossing the road as it goes under the bridge for Rte 322. Make a right immediately onto the macadam-paved part of Big Hollow Rd. Just over half a mile down the road, Big Hollow Rd bears to the left to go up "4 Hills". You can return this way (see below), but during the months of April-November, it is more pleasant to come back via the footpath through Big Hollow. To do this, veer off of Big Hollow Rd at the small blue cinder block building at the bottom of the hill. A footpath heading to the left through the hollow can be seen. Follow this path as it winds through the hollow. About a half mile later you will see a path that heads up the steep hill to your left. It is a couple of hundred yards before the Sunset Park bike path. The climb is very steep. The path then winds through the woods and comes out of the woods on the bike path just below Sunset Park. Make a left on the bike path till it ends. Continue up McKee St. Make a right on Adams St, a left on North Burrowes, cross Park Ave and enter the campus at the entrance to the Nittany Lion Inn. Continue up the sidewalk to finish at Rec Hall.

During the winter and early spring, the snowed-under or muddy conditions of the Big Hollow footpath can be avoided by continuing up Big Hollow Rd, up the "4 Hills" to Services Rd. next to the Penn State Salvage Building. Go right on Services Rd., follow it as it bears left and becomes Bigler Rd. Carefully cross Park Avenue and continue on Bigler Rd. to Curtin Rd. Take a right on Curtin Rd. and head back to Rec Hall. This substitution adds about 0.1 miles to the route and avoids most of the treacherous parts of the loop.
 

The winter route substitutes the "4 Hills" climb up Big Hollow Rd for the grassy footpath through and out of Big Hollow. It avoids most of the "tough sledding". However, the winter route has a stretch of about 0.2 mile that may still be treacherous in the winter months, especially if there is deep snow or ice. The part in question is the stretch through the woods just after the tunnel and before the footpath connects to the gravel part of Big Hollow Rd.