With a week to go in March I am falling a little behind in my endurance riding but doing well enough in building power.
Comparing last year with this: last year in the first three months I rode 1,426 miles and had a TSS of 6510 (TSS total stress score--a measure of how hard the training is). This year, with a week to go, I have rode 953 miles and have a TSS of 4,037.
Another measure is CTL (cumulative training load) which on 4-1-12 was 69 and this year is 50.
These measures tell me my endurance is behind where it was last year and with only eleven weeks until the Ride the Rockies I should be a little nervous but I am not. Power-wise I am ahead of last year. In fact, I am stronger at my critical time points (1, 5, 20 and 60 minutes) than I have ever been. So unless we have a snowy April I have plenty of time to build endurance.
And the Ride the Rockies is no where near as hard a ride as I have been doing. Not even half as hard.