I generally don't pay much energy on Strava challenges. But they had a 5000 meter (16,404ft) climbing challenge from IMBA. I am in climbing heaven and Swank gave me over 6k ft. And I had worked out a century road ride with 2 HC climbs, netting over 10k. But the spirit was dirt so I went back out and got over 5k each on a Pisgah explore/bushwack, (Walking counts right, forgot my machete) ride and an awesome Dupont ride. So I got the spirit of the challenge, but it took a lot of time and it exhausted me to the point that I am just getting to blogging and video editing.
Damn you Strava!