Did one of the hardest training rides to date yesterday. I rode 15 miles and it took me nearly 2 hours. 6 of the miles were entirely up hill. I rode three climbs that were right on two miles each and 1000+ ft of climbing each. Just those three climbs alone equalled 3,400 ft of climbing in just 6 miles. That's steep in case you were wondering!
This little cave was a nice feature in the race I did last Sunday. The trail was phenomenal.