Strasbourg is the larger city. The cathedral there is over 1000 years old and has quite an evolution. Architecturally, from Romanesque to Gothic, religiously from Catholic to Protestant and back again. And features, with a 19th C Astronomic clock and a recent stained glass window of Jesus in celebration of the church’s 1000th year. It’s pretty impressive.
Colmar is a bit smaller, quainter and its old town center is pretty magical … esp in the eves after day-trippers have left. We dined well in both cities and spent two nights in each.
We rode the Route des Vins three days / two nights, between the two, with nights in Obernai and Ribeauville. Quiet roads and paths, fairly flat and pretty easy by e-bike. “Self-guided” tour, meaning that we had bikes and directions and that hotels and luggage transfers were arranged by the operator, velo voyageur. So we were in Alsace 6 nights, 5 full days
We detoured on cycle day two (between Obernai and Ribeauville) to climb up to the castle at Haute Koenigsburg, which you may choose to skip. 1600 foot climb.
If you want a more modest, very flat, single cycle day, a ride from Colmar to Eguisheim and Turckheim (EDIT: and back to Colmar) might be the ticket. A longer ride, still flat and not too far, would add Ammerschwihr and Kaysersberg (EDIT; to the loop).
Velo Voyaguer arranged the bikes through Alsacyclotours, which seems to have locations in Strasbourg, Colmar, Eguisheim and Kaysersberg and which seems to offer tours themselves, as well as just bike rentals.
We are big fans of self-guided e-bike tours. We move at our own pace. We can find our own little back doors. Being on a bike is a great conversation starter. You sit on a park bench and locals ask where you’re traveling, where you’re from and then you’re off to the races, talking about work, retirement, local spots to visit, whatever. And on your own, you’re not in with a gaggle of American or other English speaking tourists.
Food in Alsace is more German than French, though there is plenty of both.
For more, see our Trip Report which mentions some restaurants we enjoyed, as well as a winery we visited.