Jurassic Trail -- Big Easy Klondike Loop
The Jurassic Trail is a smooth singletrack on the west side of the Klondike Bluffs riding area. There's very little elevation change over the ride, as it skirts the edge of the mesa to the west of the Copper Ridge road. The trail is suitable for beginners. There's little elevation change on the trail. There are no stiff climbs and nothing tricky. This page describes a big loop around the edge of the valley using a bit of dirt road, Dino Flow, Jurassic, West Jasper, Midline, and West Agate. It's suitable for strong beginning riders.
Riding notes, Big Easy Klondike Loop w Dino Flow:
0.0   From Agate's northern end, northwest on doubletrack
        N38 49.095 W109 45.631
0.5   Hard left on Dino Tracks dirt road
        N38 49.115 W109 46.048
1.4   R into parking N38 49.804 W109 45.874
1.5   Find ST on southeast corner of parking
        South on Dino Flow N38 49.799 W109 45.786
1.6   Keep R N38 49.766 W109 45.714
        (L = Homer)
2.1   Keep R N38 49.471 W109 45.432
        (L = Nome)
2.4   Veer L uphill, then R to stay on Dino Flow
        N38 49.351 W109 45.181
        (Cross Mega Steps)
3.4   Cross Baby Steps North
        N38 48.899 W109 44.717
4.6   Cross Little Salty N38 48.248 W109 44.148
5.7   Cross Baby Steps South
        N38 47.591 W109 43.552
6.2   Keep R as EKG joins and splits uphill
        N38 47.375 W109 43.262
6.7   EKG joins, keep R
        N38 47.119 W109 42.984
6.9   Straight onto southbound Klondike Bluffs DT
        N38 46.997 W109 43.072
7.0   Hard L onto northbound Jurassic
        N38 46.870 W109 43.064
8.6   Keep L (R = connect to Baby Steps)
        N38 47.440 W109 43.718
9.9   Fork L (R = to Copper Ridge near Little Salty)
        N38 48.201 W109 44.503
10.0 L on Jasper West N38 48.200 W109 44.551
10.8 L on Midline N38 48.589 W109 44.902
        (straight = Baby Steps N, R = Jasper East)
11.1 L on Agate West N38 48.763 W109 45.089
        (straight = Midline, R = Agate East)
11.8 Back at parking

Getting there, Agate Northern Klondike TH:  On Highway 191 8.5 miles south of I-70 and 6.5 miles north of the southern Klondike Bluffs road (and about 5 miles north of the airport), watch for a "Northern Klondike" sign at N38 49.504 W109 46.893. Turn east (toward the sandstone bluff). Keep to the right as the road winds south around a small hill. 1.2 miles from the highway as the road is heading east toward the bluff, fork right on a fainter jeep road N38 49.103 W109 46.061, as the main road continues to the dinosaur tracks. (Park here if the road is in bad shape.) At mile 1.6, you'll come to the TH for the Jasper and Agate loops (N38 49.087 W109 45.625) on your right. (If you continuye on, you'll arrive at a larger parking area N38 49.179 W109 45.417 at the bottom of Mega Steps.)

Getting there, Klondike TH: Starting at the Colorado River, drive 15 miles north from Moab. Look for a turnout with parking on the right and a sign for Klondike Bluffs Road. There will usually be cars parked there (GPS N 38 44.452' W 109 44.037'). For a longer ride, park here and ride up the road.  Most cyclists will choose to go through the gate and drive 2.7 miles. Keep left at the fork. At 2.8 miles, park your car in the broad parking area by the fence. Go eastbound across the cattleguard for the Klondike trail, or find the singletrack Inside Passage at the north corner of the fence.