Hard to say where Darren is exactly since he does not provide GPS tracking or even daily posts about his progress (very suspicious). All his social media have very little detail about the running. But I've done a bit of digging and have some useful information.
We know from Darren's Facebook post that he started the run on April 19th, 2017 at the Santa Monica Pier. Then on Twitter, he posts that he finishes the run for April 28th in Palm Springs and is taking the next day off (no signs of any sweat or fatigue in any photos). Between these two dates is 10 days with two of these days being rest days according to their plan on CNN. So 8 days worth of actual running.
From Google Maps, the route between Santa Monica Pier and Palm Springs is between 121-129 miles. We will just say 125 miles for simplicity.
That means Darren is averaging just 15.6 miles per day on days he is supposed to be running and a miserable 12.5 miles per day for all days included. This proves that his claim to CNN that he will be averaging 40-50 miles per day with his trainer is completely false. Not even in the same ball park. And this is with him starting fresh.
At the current rate of progress, Darren will require 8 months to complete the drive.....I mean, run. Far longer than his publicized 3 months claim to CNN.
So if you want to know where Darren is right now at the end of April 30th, he should be about 15.6 miles east of Palm Springs, California.
https://m.facebook.com/DarrenKavinokyFanPage/photos/a.10151199972856428.447941.27264806427/10154278003436428/?type=3
https://mobile.twitter.com/DarrenKavinoky/status/857838334030131200
https://mobile.twitter.com/DarrenKavinoky/status/858114881886846978