VO₂ Max Testing for Ultra Runners

Races lasting 6-30+ hours are almost entirely aerobic:

• Zone 2 aerobic base is everything
• Fat oxidation for fuel efficiency
• Sustainable all-day pace
• Avoiding any intensity creep that leads to bonk

Most ultra training should be below aerobic threshold. VO₂ max testing identifies your exact Zone 2 ceiling:

• Know when you're truly in Zone 2 vs. drifting to Zone 3
• Heart rate targets for variable trail terrain
• Power hiking intensity on steep climbs
• Long training run pacing guidance

Perfect for Western States, Skyline-to-Sea, and other ultra preparation:

• Nisene Marks: Long trail runs in Zone 2
• Skyline-to-Sea Trail: Ultra-specific terrain
• Pogonip: Rolling hills for varied training
• UCSC to Summit Road: Climbing endurance

Ultra training includes 4-8+ hour runs. VO₂ max testing ensures:

• You're not going too hard early
• Proper fat-burning intensity
• Sustainable effort for full duration
• Race simulation at correct intensity

For Western States, UTMB, and other 100-milers:

• Extremely disciplined Zone 2 adherence
• Heart rate-based pacing for 20-30 hours
• Back-to-back long run intensity
• Nutrition pacing integration

While ultras are aerobic, occasional intensity helps:

• Monthly threshold work for running economy
• Hill repeats at Zone 3-4
• Occasional tempo runs
• VO₂ max testing provides zones for these too

VO₂ Max Test: $250

Complete testing with ultra marathon training zones for 50K-100+ mile distances.

Fit Evaluations
311 Soquel Ave
Santa Cruz, CA 95062

Contact:
Phone: 831-400-9227
Email: info@fitevals.com

Professional VO₂ max testing for ultra marathon runners in Santa Cruz.