Södertälje is 35 kilometres south of Stockholm and extremely easy to reach. Pendeltåg (commuter trains) run frequently from Stockholm Central via Södertälje Centrum station — the journey takes about 35 minutes. The Sörmlandspilen regional trains also stop here. By car, take the E4 south from Stockholm.
There is no airport in Södertälje; Stockholm Arlanda is about an hour away by train and road.