I went back to Tecumseh today and finished it in 1:16.
Here's the trip on Strava: www.strava.com/activities/505048309
I'm working on uploading the gpx file from a watch, too. It indicates a total time of 1:16:34, with 53:29 up and 23:04 down.
Things are melting quickly, so a lot more rock will be showing on this route in a few weeks!
Note that previously Todd had done the route in 1h24m (accompanied):
"Today my husband and I hiked/ran Mt. Tecumseh from Waterville Valley in 1:24, and I was curious what the women's FKT was?
Here's our trip: www.strava.com/activities/499269600/overview
It looks like the men's FKT is 59:05 (http://fastestknowntime.proboards.com/thread/42/new-hampshire-4000-foot…)
For women, I've found a couple:
Strava lists the fastest women's time as 1:28 elapsed (https://www.strava.com/activities/236135269/overview)
Does anyone know of others?
I hope to attempt it again on 2/28."