Expericence already with small children in a impressive hiking paths in Flumserberg.
You can find a describtion of the paths in the Summer-Panorama map (Mountain summer). You can obtain this map for free at the Mountain Railways stations, in the Tourist Office and as well as in Hotels and Restaurants.
Recommendations
Maschgenkamm-Zigerfurgglen-Maschgenkamm
Duration: ca. 45 Minuten
Longitude: 2km
Altitude: 2000m.ü.M.
reachable with the Gondola from Tannenboden
This trail is also handicapped accessible.
Prodalp-Panüöl-Prodalp
Duration: ca. 3 Stunden
Longitude: 6km (retour 12km)
Altitude: 1580-1800m.ü.M.
reachable with the Gondola from Tannenheim
Molseralp / Seeblick Rundweg
Duration: ca 20 Minuten
Altitude: 1400m.ü.M.
Schwammkopf Rundweg
Duration: ca 45 Minuten
Altitude: 1400m.ü.M.
Tannenboden-Mittenwald
Duration: ca 20-30 Minuten
Altitude: 1220-1275m.ü.M.
Tannenboden-Prodalp
Duration: ca 1.5 Stunden
Altitude: 1400-1576m.ü.M.
(a little ambitious)