Weather
Climate Avg| Time | Temp | Dew Pt | Humidity | Wind | Conditions |
|---|---|---|---|---|---|
| Start | 73.3 – 73.3°F | 67° Steamy | 80 – 80% | 8 mph SW | Partly cloudy |
| 8:00 AM | 76 – 76°F | 67° Steamy | 73 – 73% | 9 mph S | Partly cloudy |
| 9:00 AM | 78.6 – 78.6°F | 65° Steamy | 63 – 63% | 12 mph S | Clear sky |
| 10:00 AM | 80.3 – 80.3°F | 64° Sticky | 59 – 59% | 13 mph S | Clear sky |
| 11:00 AM | 81.5 – 81.5°F | 64° Sticky | 56 – 56% | 14 mph SW | Clear sky |
| Finish | 81.8 – 81.8°F | 66° Steamy | 58 – 58% | 15 mph SW | Partly cloudy |
Based on 3-year average for this date. Real forecast available in 139 days.
Elevation Profile
Course Stats
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% |
RM Difficulty Index
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.
Honolulu Marathon FAQ
When is the next Honolulu Marathon?›
The next Honolulu Marathon is on Sunday, December 13, 2026.
How long is the Honolulu Marathon?›
The Honolulu Marathon is 26.2 miles (42.195 km), the standard marathon distance. It runs in Honolulu, HI.
How much elevation gain does the Honolulu Marathon have?›
The Honolulu Marathon has about 324 ft (99 m) of climbing and 323 ft of descent, with a maximum grade of 1.78%.
Is the Honolulu Marathon flat, downhill, or hilly?›
The Honolulu Marathon starts and finishes at roughly the same elevation (net +0 m). With 324 ft of total climbing along the way, it's a fast, flat course.
How hard is the Honolulu Marathon?›
Runner's Math scores the Honolulu Marathon 33/100 (Moderate) — #23 of 38 marathon courses in our library, ranked by modeled time cost. The profile costs about 0:34 versus a flat course for a runner at 4:00-marathon pace.