The Mormon Emigrant Trail in California is a long and scenic road biking route on a paved forest road. While not one continuous steep ascent, it's a "roller coaster" with many uphill sections, offering a significant accumulated climb of around 4,500 feet over nearly 24 miles towards the higher elevations before connecting with Highway 88, with an average grade around 3-4% but steeper pitches mixed in. As you ride through the beautiful Eldorado National Forest, the scenery is typical of the Sierra Nevada, with pine and cedar forests and occasional expansive vistas. Be prepared for the trail's length and remote nature, and note that the road is subject to seasonal closures due to snow in the winter months.