Steadfast FitnessJoin

A Steadfast Season

Endurance — Starter

6 weeks · 4 days a week · Endurance

The philosophy

A 6-week aerobic base-builder for new and returning endurance athletes. Four sessions a week balance easy mileage, structured speed intervals, low-impact cross-training, and a weekly long effort to grow your engine without burning out. Most volume sits at conversational "easy" intensity so you accumulate durable aerobic fitness, while one weekly interval day sharpens pace and running economy. Log every session by distance (and time) to watch your pace improve week over week. Keep easy days truly easy — that discipline is what makes the hard days pay off.

Week one, in full

The first week is open. Read it, then train it.

Easy Aerobic Base

Day 1

  • Dynamic Warm-Up Jog1 × 1
  • Easy Aerobic Run1 × 1
  • Cool-Down Walk1 × 1

Speed Intervals

Day 3 · Intervals

  • Dynamic Warm-Up Jog1 × 1
  • Track Interval Repeats6 × 6–8
  • Cool-Down Walk1 × 1

Cross-Train Engine

Day 5 · Intervals

  • Rowing Erg Intervals5 × 5–6
  • Steady-State Bike Ride1 × 1
  • Recovery Spin1 × 1

Weekly Long Run

Day 7

  • Dynamic Warm-Up Jog1 × 1
  • Long Slow Run1 × 1
  • Cool-Down Walk1 × 1

The remaining weeks

The full prescriptions for weeks 2 through 6 — loads, progressions, and deloads — are written for members.

Week 2Easy Aerobic Base · Speed Intervals · Cross-Train Engine · Weekly Long Run
Week 3Easy Aerobic Base · Speed Intervals · Cross-Train Engine · Weekly Long Run
Week 4Easy Aerobic Base · Speed Intervals · Cross-Train Engine · Weekly Long Run
Week 5Easy Aerobic Base · Speed Intervals · Cross-Train Engine · Weekly Long Run
Week 6Easy Aerobic Base · Speed Intervals · Cross-Train Engine · Weekly Long Run

Begin this season

All 6 weeks, logged set by set, adapted to how you recover. Founding members lock the founding rate for life — $14.99 a month or $99 a year — with founding standing and early access to what the house builds next.

Begin this season