• Ferry from the mainland: daily Waxholmsbåt departures from Årsta Havsbad and Nynäshamn (Nynäshamn boats land at Ålö), plus a summer boat from Strömkajen that takes about 3 hours 45 minutes
• No pre-booking for bikes: Cykelboden rents kids' bikes, child seats and trailers, and Hamnboden rents pull wagons for the picnic basket
• Utö Storsand military area: the beach, about 10 km from Gruvbyn, sits on a firing range, so check for exercises at Hamnboden or on the signs at the entrances

Utö is an island in the outer Stockholm archipelago. Around Gruvbyn, the harbor village where the ferries dock, are a playground, summer bounce castles, minigolf and pedal boat and kayak rental. Barnens bad, a shallow sandy bay, is a 15-minute walk away.

Bike rental, with kids' bikes and trailers, opens up sandy beaches farther out and a 9-hole disc golf course. A small museum covers the island's mining history.