Denver Marathon

Denver, CO|Sunday, May 17, 2026|32 days away
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Weather

Climate Avg
TimeTempDew PtHumidityWindConditions
Start48.4 – 50.3°F38° Crisp55 – 70%7 mph SWClear sky
8:00 AM53 – 55.6°F39° Crisp50 – 63%6 mph SWClear sky
9:00 AM56.4 – 67.2°F40° Ideal33 – 53%3 mph SEClear sky
10:00 AM62.5 – 71.1°F36° Crisp25 – 41%4 mph SWPartly cloudy
11:00 AM67.6 – 73.9°F35° Crisp23 – 34%3 mph WPartly cloudy
Finish71.4 – 76.7°F31° Crisp17 – 30%4 mph NWPartly cloudy

Based on 3-year average for this date. Real forecast available in 16 days.

Elevation Profile

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Course Stats

Net Elevation (downhill)
-16 ft
Distance
26.22 mi
Total Gain
+710 ft
Total Loss
-727 ft
Max Grade
1.7%
Altitude (+0.2%)
5,269 ft

Mile Splits

MileGrade
1+0.1%
2+0.6%
3-1.0%
4-1.1%
5-0.1%
6+0.2%
7+1.4%
8+1.0%
9-0.2%
10+0.0%
11+0.3%
12+0.8%
13+0.8%
14-0.0%
15+1.7%
16+0.2%
17-1.3%
18-1.3%
19-0.8%
20-1.2%
21-1.3%
22-0.3%
23+0.4%
24+0.7%
25+0.8%
26-0.5%
27-0.8%

Denver Marathon Pace Calculator & Race Plan

Denver runs at 5,280 feet of elevation, which adds a measurable cost to your pace. If you're coming from sea level, expect a 2-4% performance hit from altitude alone, on top of whatever the course and weather throw at you.

The course has 217 meters of gain with rolling hills throughout. Our model includes altitude adjustment based on the start elevation, so your splits reflect what a mile at altitude actually feels like.