The two most accessible sandy beaches locally are Ganavan, near Oban, and Tralee (Ardmucknish Bay) in Benderloch.
Ganavan – If you drive into Oban, and go north along the esplanade as far as you can, you will be on the road to Ganavan, which takes you past Dunollie Castle. There is a large carpark at the end of the road and toilets, making it a good choice with young kids. On the way to it you will also pass Wee Ganavan where you can park at the side of the road. From Ganavan you can also walk along the coast to the north, or explore up the cycle track towards Dunbeg. The cycle path is the venue for the weekly ParkRun on a Saturday morning.
Both beaches are popular with swimmers, and are good launch sites for kayaks, kite surfers etc. Ganavan can be a little exposed in some winds so check the forecast if you’re paddling / foiling etc.
Tralee Bay – This large sand and gravel beach is popular with locals and visitors, but has more limited parking. The best place is a small car park in the trees, half way down the straight road that turns off by the school in the village. You can also park in the village and follow the signs, but this takes you to the less sandy end of the beach.
A much quieter spot, is the beach up at Dail which is three miles further up the track from Craig. It’s a great spot for a swim or just an explore.