Hennepin Hundred

I&M Canal Trail, IL|Saturday, October 3, 2026|171 days away
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Weather

Climate Avg
TimeTempDew PtHumidityWindConditions
Start59.7 – 59.7°F57° OK90 – 90%2 mph SClear sky
8:00 AM62.6 – 62.6°F57° OK83 – 83%5 mph SClear sky
9:00 AM58.1 – 69.2°F52° Nice64 – 70%3 mph SClear sky
10:00 AM62.9 – 75.7°F57° OK60 – 63%4 mph SClear sky
11:00 AM67 – 80.7°F58° OK51 – 56%5 mph SClear sky
Finish70.5 – 84.7°F57° OK44 – 50%5 mph SClear sky

Based on 3-year average for this date. Real forecast available in 155 days.

Elevation Profile

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Course Stats

Net Elevation (uphill)
+16 ft
Distance
100.00 mi
Total Gain
+2,897 ft
Total Loss
-2,881 ft
Max Grade
11.7%
Altitude
699 ft

Mile Splits

MileGrade
1-0.6%
2+0.0%
3-0.1%
4-0.3%
5+0.1%
6+0.0%
7+0.0%
8-0.1%
9+0.0%
10-0.1%
11-0.2%
12+0.3%
13-0.1%
14+0.1%
15-0.1%
16+0.1%
17-0.1%
18+0.1%
19-0.2%
20-0.1%
21+0.2%
22-0.1%
23-0.1%
24+0.1%
25+0.2%
26+0.0%
27-0.3%
28+0.4%
29-0.3%
30-0.2%
31+0.0%
32-0.2%
33-0.1%
34+0.2%
35+0.1%
36+0.0%
37+0.1%
38+0.3%
39-0.2%
40+0.5%
41-0.2%
42-0.2%
43+0.5%
44-0.1%
45-0.4%
46+0.0%
47+0.0%
48-0.1%
49+0.0%
50-1.2%
51+1.3%
52+0.0%
53+0.0%
54+0.1%
55+0.1%
56+0.3%
57+0.0%
58-0.4%
59+0.1%
60+0.4%
61-0.7%
62+0.2%
63-0.2%
64+0.0%
65-0.1%
66-0.1%
67-0.2%
68+0.1%
69+0.1%
70-0.1%
71+0.1%
72+0.1%
73+0.0%
74-0.2%
75+0.4%
76-0.3%
77-0.1%
78+0.0%
79+0.1%
80+0.0%
81-0.1%
82+0.1%
83+0.3%
84+0.0%
85+0.0%
86+0.4%
87-0.6%
88-0.6%
89+0.0%
90-0.1%
91+0.1%
92+0.0%
93+0.1%
94+0.0%
95-0.3%
96+0.9%
97-0.6%
98+0.4%
99+0.6%
100+1.3%

Hennepin Hundred Pace Calculator & Race Plan

The Hennepin Hundred is a 100-mile ultra on the flat I&M Canal Trail in Illinois. Despite being flat, 100 miles of running accumulates 883 meters of gain from the gentle trail undulations. The real challenge is managing fatigue, nutrition, and sleep deprivation over 20+ hours.

Our ultra-distance fatigue model is especially relevant here. The pace drift from mile 1 to mile 100 is massive, and having realistic splits helps you manage your effort and crew logistics.