Here’s a link to pdf of the mileage sheet. It is indeed not attached to the pdf of the permit (I just went up there last week, and checked the printout of my permit).
The hike is a bit like Whitney, except for differences in altitude, heat and trail conditions. Vivian is on the south side of the mountain, in full sun for most of the day. It gets very hot. The summit is often warm and calm, but high, cold winds are not uncommon.
Most of the trail is in good condition except the initial climb from Mill Creek to near the Vivian Creek campground. This section is loose rock rubble and is steep.