It was the Kirkwood 5K and it registered about 4K during the race, so I had to walk around a little extra. The Ekans ended up being my first 100% IV Pokemon!
In case anyone is interested, there are two ways I've been able to buy things in Pokémon GO without using actual money so far:
Shopkick gives you points for going to various stores and scanning items. You can redeem the points for Target gift cards and then buy Google Play gift cards with them :) That's what bought my incubators today.
Additionally, the Google Opinion Rewards app gives you Google Play credit for taking brief surveys. Combined with coins from taking gyms, I've bought two bag upgrades.