In August 2018 my girlfriend and I climbed Mt Baker and Mt Rainier back to back. We first climbed the North Ridge of Mt Baker with AAI. After the descent we had 2 full recover days with driving being the most strenuous workout. Then we climbed Kautz Glacier on Mt Rainier ourselves with 2 other friends. We climbed the ice pitches on Kautz and reached some 12,500 ft and got turned by back the massive crevasse field before us. Though we felt fit enough for either mountain, we weren’t training back then, and on Mt Rainier we could definitely still feel the fatigue in the legs. But I still think that if the conditions were right, we could make the summit, and we would need to spend another night at high camp and descend the next day. We were lucky to have a long period of really nice weather in the Cascades then. If it was rough, we probably couldn’t have climbed as much.