Hey Nathan,
I live in Karlsruhe but currently I'm not training enough to serve as a training buddy. I'm having a bunch of super lazy months, I'm kind of old, and near the end of the field in any kind of competition anyway.
Right now, I'm only swimming, dabbling mostly because I like the water, but as June and the Challenge Kraichgau get closer I'll have to increase my cycling efforts. I'll get through the run somehow.
Where do you usually swim? I swim at the Vierordtbad most of the time, late in the evening when the pool is deserted.
From time to time I'll be at the Europabad, also relatively late when I have a lane to myself.
When the cold water gets bearable in a wetsuit, I prefer lakes. There are a few pretty ones around Karlsruhe.
Cheers,
Renato