I tried using Gothere.sg to provide directions to participants and it is much better than using Google Maps. In the upcoming Sungei Buloh Anniversary Walk, I included this link for directions: http://gothere.sg/directions#:718925 – using Sungei Buloh Wetlands Reserve’s postcode.
This is what people will see:

If they key in their postal code in the “Get there from” box, or even a description, the site calculates how to get there or drive there. I tried simply typing in “National University of Singapore” and it produced this route below, which began from Central LIbrary, even calculating the price.

You have to be alert though – for example in this map it indicates the last leg is by TIBS bus no. 925C, which extends to the park only on Sundays. But its not so bad, for otherwise it ends at Kranji Reservoir Park and you can walk in through Kranji Nature Trail which is worth the quiet walk.
The good news is it means Gothere.sg solves my “getting there” issues and I will feel comfortable just providing a link. Google Maps did incorporate Singapore postal codes as well recently and has had driving directions for some time now, but not public transport directions. Gothere.sg also provides a simple URL for any location – gothere.sg/directions#:POSTCODE which is pretty neat and nice icons that keep things clear for users.
So the next page to update will be the Pedal Ubin webpage – I’ll add a Gothere.sg link to the directions to participants once I figure out the postcode to use there.