Switzerland to the Black Sea, Spring 2027

I am a 68 year old female, looking for someone to bike with beginning late March 2027 or later, from Switzerland to the Black Sea, using the Danube cycle route from Vienna to the Black Sea. I finish working at a camp in Sankt Stephen (south of Bern) on March 20. Could start together from camp, or meet up along the way. Anticipating cycling around 60 miles a day, taking a Slacker Day once a week, and combo of camping, hotels, Warm Showers, and spontaneous hospitality for lodging. I have done long tours in the US and in Europe, and a few years ago, cycled from the source of the Danube to Budapest. I‘m generally easy going.