there is a new strava challenge starting next month, called Rapha Rising http://app.strava.com/challenges/rapha-rising-circle-of-death
looks quite achievable!
Hmm, depends on where you live, 300+ miles last week, only 1100m climbing.
Would have been a diddle the week I do a Trans Pyrenees trip, 10000+m in 5 days allegedly.