So you're starting with 100 consecutive pull-ups?
That's a whole different animal in that case.
I think that part of the fun of Murph is that it's meant to be broken up, but I guess every box is different.
Murph is meant to be done with the pull ups, push ups & squats broken up however you want.
From the main site:
"Murph"
For time:
1 mile Run
100 Pull-ups
200 Push-ups
300 Squats
1 mile Run
In memory of Navy Lieutenant Michael Murphy, 29, of Patchogue, N.Y., who was killed in Afghanistan June 28th, 2005.
This workout was one of Mike's favorites and he'd named it "Body Armor". From here on it will be referred to as "Murph" in honor of the focused warrior and great American who wanted nothing more in life than to serve this great country and the beautiful people who make it what it is.
Partition the pull-ups, push-ups, and squats as needed. Start and finish with a mile run. If you've got a twenty pound vest or body armor, wear it