Flowers Trail is a 9.3 mile moderately trafficked out and back trail located near Bellvue, CO and is rated as difficult. The trail is primarily used for hiking and is accessible from June until September.
Directions from Fort Collins: Take Hwy 14 west out of Fort Collins to the town site of Egger (approx 30 miles). Turn south at the Pingree Park Road (County Road 63E), and go about 5 miles to the Old Flowers Road, also labeled the Jack's Gulch Road. This four wheel drive road runs 6 miles to the Flowers Trail, taking off from Beaver Park.
This trail is pretty tough! We hiked to the B17 bomber crash site, which was pretty incredible! For about 3 miles the trail goes straight up, with no switchbacks. There is about a 2,000 ft change in altitude within this 3 miles. To find the crash site, there is a carin on the left side of the trail with an American flag (see pic).
I would recommend coming from another direction. You could hike Brown's Lake to Flowers trail. It would take you to the site from the opposite direction and would be less strenuous, but more miles.
Happy I did it, but will not be hiking that trail again.