Running
The fastest route to a bigger aerobic engine.
Running builds cardiovascular fitness faster per minute than almost anything else, but it punishes people who add mileage too quickly. The plan is simple: most runs easy, one run harder, one run longer, and never jump weekly mileage more than about 10%.
Why it works
- • Raises VO2 max and resting heart rate efficiency
- • Burns 100+ calories per mile for most adults
- • Builds bone density through impact loading
- • Requires almost no equipment
What you need
- • Neutral running shoes (replace every 400–500 mi)
- • Moisture-wicking socks
- • Watch or phone for pace
Guided sessions
intervals · 34 min
Run/Walk Intervals
The safest way to start running: short run bursts with generous walk recovery.
easy · 32 min
Easy Zone 2 Run
Conversational pace for 30 minutes. The single most valuable run you will do.
long · 70 min
Long Run
Time on feet at easy effort. Builds the aerobic base and mental durability.
tempo · 38 min
Tempo Run
20 minutes of comfortably hard running to lift the pace you can hold.
intervals · 42 min
400m Speed Intervals
Six hard 90-second efforts with full recovery — top-end speed work.
hills · 42 min
Hill Repeats
Strength work disguised as running. Uphill hard, downhill easy.
intervals · 40 min
Fartlek Play
Unstructured speed play — surge, float, repeat. Keeps running fun.
Plans built on running
Beginner tips
- • Start with run/walk intervals — 1 minute running, 2 minutes walking.
- • If you cannot hold a conversation, you are running too fast.
- • Add one longer run per week instead of making every run longer.
- • Two rest or cross-training days per week protects your shins and knees.
Questions
How do I start running if I can't run a mile?
Use run/walk intervals. Alternate 60 seconds of easy running with 90–120 seconds of walking for 20–25 minutes, three times a week, and shift the ratio toward running every week.
How fast should my easy runs be?
Slow enough to hold a full conversation — usually 60–90 seconds per mile slower than your 5K pace. Easy runs build the aerobic base; hard runs sharpen it.
How many days a week should I run?
Three days is enough to progress for most beginners. Four to five days suits half-marathon and marathon training, with at least one full rest day.