I guess that's something that Dev will have to clarify. I thought it was laid out in that manner (platinum: 100+ runs, 1000+ km; gold 90+ runs, 900+ km) because I had seen this posted by Dev: My goal this year is silver club (80 runs and cover 800K ). However, looking back at the first post you're right, there's nothing mentioning a specific distance.
Dev: is there a distance requirement too, or did I misinterpret your post?