Commute Lucan to Tallaght

Take the R136

Without giving too much info away where is the school located? The M50 might be a better option depending on the location.

Personally I would take the m50, come off at the Tallaght exit, up the Bypass and take a left at Tallaght stadium and the first exit at the roundabout, the 2 schools I can think of are in that area.

If you're in for 8 I'd leave at 7.20 to give yourself time, I drive from Coolock to Tallaght for work and leave at 7.10 and I'm there usually in 25-35 minutes.

Jesus you're right and I lived there for 40 years!

Really depends what time you'll be going at, but I wouldn't be taking the M50 at that time of the morning from Lucan as it's choc-a-bloc getting to it on the N4 from before 8am. Instead, go up the outer ring road from Woodies in Lucan to the N81, then either across Whitestown Way, or else turn right from the N81 at the stadium to get to Oldbawn.

My other half did similar journey, Lucan village to Avonmore Av. She'd leave about 7.15am to get there for 7.50/8am. Any later and it could add 20/30 minutes. Home she was leaving about 3pm and it was usually 30/40 minutes.

Friday coming home was always an outlier, generally taking an hour or more.

Edit: she preferred the M50, but if there's a crash you're fecked. Although these days if there's a crash on the M50, all roads around are gridlocked anyway