'Tis the season to get jacked

Holidays are almost over and it's almost time to get back into a regular routine.
For a generic baseline, I like to structure the year as:
Jan-March: Easy running, bit of fast work to keep up speed, and heavy lifting to build strength. Easing off towards March if you have a spring marathon.
April- May: Mixing in more workouts for stamina and more speed, moderate lifting. Adding in plyos if you have a spring marathon.
June- Aug: Mobility and light lifting. More time outdoors getting in quality miles.
Sept-Nov: Big race season. Race specific lifting & plyos. Speed and tapering.
Dec: Simple and recovery time
Obviously this depends on your races and other life events.
But for most people, now is the next 8 weeks is a great time to think about lifting heavy.
There isn't a need to find your 1 rep max, but it is worth going almost to failure with (leaving 1 rep in the tank) with a 3-6 rep exercise like the Squat or Deadlift.
I know it's weird for us endurance athletes, and not worth risking too heavy and injury, but being stronger will make you faster and more resilient.