Golden Pass and JungFrau - Same Day

Hi harry131! Combining the Golden Pass trip and the Jungfraujoch in one day is doable (you can find traveling times in the timetable), but I would prefer to plan an overnight stay in or near Interlaken. That's because a Jungfraujoch visit isn't worth your time and money if weather is not good. With an extra day in this region, you'll increase your chances as you can choose to make the trip either right after your arrival in Interlaken or the next day. In many cases, an early morning visit offers the best chances of clear weather, but there are no guarantees. Just keep an eye on weather forecasts and decide shortly before what to do.

The Golden Pass only has short stops. If you want to visit a town, you'll have to get off and take the next train or stay overnight. Gstaad and Zweisimmen would be worth a stop, but that really depends on your further plans. An ongoing train trip is great as well and allows you to spend more time in and near Lucerne, which is wonderful too.