Performance Science

Travel Fatigue Calculator

Miles flown, time zones crossed, rest days, altitude shifts. Convert the road trip into a fatigue index and an expected performance decrement.

Inputs

Result

Fatigue Index
46
Moderate — manageable with rotation
Expected Δ Performance
-2.3%
Team-efficiency delta vs. rested baseline.
Distance load
11.7
Circadian load
22.4
Rest deficit
12.0
Altitude
0.0
Back-to-back
0.0

Methodology

The Fatigue Index sums five weighted schedule stressors on a 0–100 scale. Weights are drawn from published circadian and travel-density literature and are visible in the breakdown above.

Circadian. Eastward travel is scored 1.4× a westward equivalent — the peer-reviewed mismatch between advancing and delaying the phase of the body clock.

Performance mapping. Index scales linearly to a 0–5% expected team-efficiency decrement, consistent with observed spreads in NBA and MLB back-to-back / long-flight studies.