Route:

There are both road and trail options. The road is a good hill workout, has almost no traffic, and can be run without lights.

Road (T=1, P=3, N=2): Follow the yellow line. There are two loops, upper and lower. Starting with the upper loop, from the Trading Post (TP), head down the hill. At the first junction (L), take a left and follow the road ~½mi to the Will Call booth. Take the next left on the dirt road (D1). Go left up the dirt road to the next paved road (D2). Go left up the paved road. At the 3-way junction (3-WAY), go left and head back towards the TP. To continue onto the lower loop, go right on the road just before TP. This road winds down hill for about 3/4 mi. At the road junction (B), make a sharp left and head up the road to the next junction (L). You've gone ~3.7mi. From here, you can repeat the two loops, staying straight at L the first time, then going left and returning to TP the next lap, for 7.4mi. You can repeat just the lower loop (TP-B-L-TP) for 6.1mi. Repeating just the upper loop (D1-D2-3WAY-TP) is 5.3mi.

For faster runners, there are several ways to add more. From 3WAY, run up-and-back either to the observation point (OBS), 0.7mi; through the tunnel to the upper lot (UL), 0.9mi; or both, 1.5mi. The dirt road from D1 to D2 may be muddy, so be prepared to improvise.

Trail Route (T=3, P=3-4, N=3): Follow the purple line. Starting at the Trading Post (TP), head up the hill past the ampitheatre. Just before 3WAY*, faster runners should look for a trail on the right. Take the trail down the hill, then parallel the dirt road up to D2. Slower runners should stay on the paved road and go right to D2. At D2, take the Red Rocks trail up into Matthews Winters park. At RR*, ~0.7mi up, stay right at the trail junction and follow the trail around the plateau. To avoid any major climbs, continue to MS or beyond; and return the same way. If you're looking for more hills, continue around to MS*. The trail comes in from behind. Take a sharp left, climb up the switchbacks (this trail can be icy), across the plateau, then down the other side. Stay right at RR and down the trail to D2. For a shorter way back, at D2, go right to 3WAY, then left to TP. For a little longer return, follow the dirt road from D2 to D1; go right on the paved road; about a 1/3-mi up, take the trail back up to TP (red on the map).