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Weather
Climate Avg| Time | Temp | Dew Pt | Humidity | Wind | Conditions |
|---|---|---|---|---|---|
| Start | 71.6 – 75.1°F | 67° Steamy | 73 – 87% | 10 mph E | Partly cloudy |
| 8:00 AM | 71.6 – 77°F | 66° Steamy | 68 – 86% | 11 mph NE | Partly cloudy |
| 9:00 AM | 74.1 – 78.8°F | 67° Steamy | 64 – 80% | 15 mph E | Clear sky |
| 10:00 AM | 74.9 – 79.6°F | 66° Steamy | 62 – 76% | 14 mph E | Clear sky |
| 11:00 AM | 75.6 – 81°F | 66° Steamy | 59 – 74% | 15 mph E | Clear sky |
| Finish | 75.7 – 81.2°F | 67° Steamy | 61 – 73% | 15 mph E | Partly cloudy |
Based on 3-year average for this date. Real forecast available in 226 days.
Elevation Profile
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Course Stats
Net Elevation (uphill)
+1 ft
Distance
26.22 mi
Total Gain
+324 ft
Total Loss
-323 ft
Max Grade
1.8%
Altitude
3 ft
Mile Splits
| Mile | Grade |
|---|---|
| 1 | +0.0% |
| 2 | +0.1% |
| 3 | -0.1% |
| 4 | +0.0% |
| 5 | +0.0% |
| 6 | +0.0% |
| 7 | +0.1% |
| 8 | +1.8% |
| 9 | -0.2% |
| 10 | -1.0% |
| 11 | +0.0% |
| 12 | -0.5% |
| 13 | -0.1% |
| 14 | -0.0% |
| 15 | +0.0% |
| 16 | +0.1% |
| 17 | -0.1% |
| 18 | +0.0% |
| 19 | +0.0% |
| 20 | +0.0% |
| 21 | +0.1% |
| 22 | +0.4% |
| 23 | -0.5% |
| 24 | +0.6% |
| 25 | +1.0% |
| 26 | -1.6% |
| 27 | +0.1% |
Honolulu Marathon Pace Calculator & Race Plan
Honolulu starts in the dark at 5am to beat the heat, but tropical humidity is still a factor even before sunrise. The course is mostly flat with one notable climb around Diamond Head crater. December weather is warm by mainland standards, typically 70-80°F with high humidity.
Heat and humidity are the main challenge here. Our model adjusts your splits for the dew point, which matters more than temperature for running performance. A 75°F day with tropical humidity hits harder than an 85°F day in dry air.