I think 12k is about 7.5 miles. I am doing a 6k for Turkey Trot. Today its raining and snowing so I don't know about my training run. I try to go out to the race course and practice on weekends. During the week I practice with resistance training, elliptical, and treadmill. Just a little of everything. When I was training for my first 5k it took me three weekends to finally make it through the whole course. I was doing it in pieces. The final week I tried the big hill that I had to go up from the state capitol to St. Paul Cathedral. There's no escaping the hill. But I made it up the hill just going slow but keeping up the jog. Great thing about a big hill is you get to run down the same hill to the finish line. Then there's all these volunteers with armloads of medals waiting to hand them out. So that was my first medal. Its was the 2018 Twin Cities Marathon 5k race. They had shorter races to get people involved during the marathon weekend. My second race was Halloween Half 5k. Now I am working onTurkey Trot on Thanksgiving Day and Reindeer Run in December. I think the challenge is the cold weather of Minnesota.