What Is a Good VO2 Max for My Age?
VO2 max — your maximal oxygen uptake — is widely considered the single best indicator of cardiovascular fitness and aerobic capacity. It predicts endurance performance, correlates strongly with all-cause mortality risk, and declines predictably with age. Here's how your number compares and what you can do to improve it.
What Is VO2 Max?
VO2 max is the maximum rate at which your body can consume oxygen during maximal intensity exercise. It's expressed in millilitres of oxygen per kilogram of body weight per minute (ml/kg/min). The higher the number, the more oxygen your muscles can use — and the more aerobic work you can sustain.
It's determined by three key factors: cardiac output (how much blood your heart pumps per beat), blood oxygen-carrying capacity, and how efficiently your muscles extract oxygen from blood. Training primarily improves cardiac output and peripheral oxygen extraction.
VO2 Max Norms by Age and Sex
| Age Group | Poor | Fair | Good | Excellent | Elite |
|---|---|---|---|---|---|
| Men 20–29 | <38 | 38–43 | 44–50 | 51–57 | >60 |
| Men 30–39 | <35 | 35–40 | 41–47 | 48–53 | >55 |
| Men 40–49 | <32 | 32–37 | 38–44 | 45–50 | >52 |
| Men 50–59 | <28 | 28–33 | 34–40 | 41–46 | >48 |
| Women 20–29 | <31 | 31–36 | 37–42 | 43–48 | >52 |
| Women 30–39 | <28 | 28–33 | 34–39 | 40–45 | >48 |
| Women 40–49 | <25 | 25–30 | 31–36 | 37–42 | >45 |
| Women 50–59 | <22 | 22–27 | 28–33 | 34–39 | >42 |
All values are in ml/kg/min. As a reference: elite male marathon runners typically score 70–85 ml/kg/min. Eliud Kipchoge has been estimated at ~92 ml/kg/min.
How VO2 Max Declines With Age
VO2 max declines at approximately 1% per year from age 25–30 in sedentary individuals. The good news: trained athletes lose VO2 max at roughly half that rate. A 60-year-old recreational runner can have a higher VO2 max than an untrained 30-year-old.
💡 Key insight: VO2 max declines with age, but training dramatically slows the rate. The gap between trained and untrained individuals widens significantly after age 40.
How to Improve Your VO2 Max
The two most effective training strategies are:
1. High-Intensity Interval Training (HIIT)
The "Norwegian 4×4" protocol is the gold standard for VO2 max improvement: 4 minutes at 90–95% of max heart rate, 3 minutes active recovery, repeated 4 times. Do this 2–3 times per week. Studies show 5–15% improvements in VO2 max within 6–8 weeks.
2. Zone 2 Cardio
Steady-state exercise at 60–70% of maximum heart rate (conversational pace) for 45–90 minutes. Zone 2 builds aerobic base and mitochondrial density. Elite endurance athletes spend 70–80% of their training volume in Zone 2.
Combine both: 2–3 Zone 2 sessions per week + 1–2 HIIT sessions. This combination produces the greatest VO2 max improvements for recreational athletes.
VO2 Max and Health Outcomes
Beyond athletic performance, VO2 max is one of the strongest predictors of all-cause mortality. A 2018 JAMA Network Open study of over 122,000 patients found that cardiorespiratory fitness was inversely associated with long-term mortality — with no upper limit of benefit. Even going from "low" to "moderate" fitness dramatically reduced risk.
Find Your VO2 Max Category
Enter your age, sex, and a simple field test result to estimate your VO2 max and see how you compare.
Use the VO2 Max Calculator →