This wide trail starts off of the High Ridge Loop Trail
from the east side of Dry Creek Pioneer Regional Park. After less than 1.0 mile of almost flat fire road, you'll need to make the steep left to continue on the trail. This is a serious climb. Although it's doable, don't be ashamed if you have to hike-a-bike.
Tolman Peak is actually a dead-end, so you'll have to turn around at the top because the cattle gate is not accessible. Hopefully, they will open that part up in the future. From the top, you can descend back where you come up from or take the South Fork Trail and circle a loop back to High Ridge Loop Trail