Did you see Fred's warning about the Rail disruption and replacement bus service:
> Service announcement for those of you going with train from Copenhagen to Odense for Codegarden: National Danish Rail (DSB) just announced a huge service window of like six months on the route, with replacement busses on the final leg. Trains should be back by Codegarden but you better keep an eye on the daily shape of the project. It is not UK bad, but they rarely end on time. 🙂
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https://www.dsb.dk/sporfornyelse/