Follow trail description for Option 1: Dumont Lake to Round Lake. From Round Lake continue east on trail #1134 3.5 miles to #20. Turn left and head north for approximately 1 mile. At the intersections of roads #620 and #20, stay left and follow Rd (Sawmill Creek Road) north for approximately 4.5 miles to connect with FDR 60. There are many logging roads in this area. are dead-end roads and gated. Turn left and head west on FDR 60 to Buffalo Pass approximately 5.8 miles. From Buffalo Pass to Round Lake is 6.2 miles. Complete mountain bike loop by connecting trail #1102 and RD #311 back to Dumont Lake. About 16.2 miles one-way.
Overall, Round Lake / Percy Lake is the 78th most popular mountain bike trail of all 175 mountain biking rides in Colorado.