I need a route for a new bike commuter.
They are traveling from Prospect Park SW in Brooklyn to W28th and 7th Ave in Manhattan.
Does anyone do this commute and have a detailed route?... preferably on mostly bike lanes.
Thanks

I'd do the following:

1. Ride north through the Prospect Park to Grand Army Plaza
2. Take Flatbush to Tillary
3. Left at Tillary
4. Right onto the Brooklyn Bridge on-ramp
5. Once off the bridge make left at Chambers
6. Cross the West Side Highway onto the Greenway
7. Exit at 26th Street
8. Make left at 8th
9. Right at 27th

Not the most bike friendly way since Flatbush can be hairy as is Chambers, but I used to ride that route often without incident.

I come from the GAP area - I usually take Bergen (Dean on the way back) to Smith. Smith turns in to Jay and deposits you at the bike ramp for the Manhattan Bridge (not a fan of the foot traffic that the BK Bridge can attract). From there, take Chrystie to Houston. Houston a couple blocks to Lafayette. 9th street over to 6th Ave and then up. The only stretch that doesn't have a bike lane is the couple blocks on Houston.

Thanks for the route.
It's the quickest route but Flatbush is not for the amateur or faint of heart.

Thanks.
Longer than roadiejorge but it sounds safer for a newbie.

Take PPW up & save the park for a non-commuting ride.

PPW to Vanderbelt, diagonally across the traffic at the front of the park, by following the bikeway across the traffic circle (straight across and to the right. Look for the green path or just follow other bikers).

This takes you left around the plaza in front of the park, to Vanderbelt.

Take a right to follow Vanderbelt's bike path downtown.

You can do Dean/Bergen to Smith & Jay.

For a safer but longer path path onto the Manhattan bridge you can stick Vanderbelt all the way down to Dekalb, take a left, take a right a couple blocks down @ Carlton, follow that all the way to Flushing, and follow Navy & Sands's bike path's over to the bridge. It will add at least a mile to your route, but it has less traffic than Jay & Smith.

If you go straight down Canal one block to Allen, its a little safer to navigate than Chryste. Allen becomes 1st Ave after Houston, Left @ 9th st, right @ 6th ave.

I really miss that commute.

Thank you.
Another safe route.
I'll show him both and let him choose.

I usually just take Vanderbilt all the way to Flushing Ave. Ft. Greene has much less traffic than Brooklyn Heights/Boerum Hill so I always stay on that side of Flatbush. Once over the bridge you're on your own.