The 100 Mile follows the Hennepin Canal State Trail from Sinnissippi Park in Sterling to the Colona Fire Department, a point-to-point run with a short out-and-back detour around mile 47-54. It is a Western States 100 qualifier: finish within 30 hours and it counts. Finishers earn a belt buckle (sub-20-hour, sub-24-hour or finisher tier) and a finisher flannel, and the race pays $750 to whoever breaks the course record.
The course is 'mostly rustic': dirt, chip-and-seal (a tar with pressed rock), crushed limestone, and a scattering of paved sections, plus a few blocks of road at the very start in Sterling. The race calls its own shape a giant, 100-mile upside-down T: after running east a little at the bottom of the T, the route takes a short out-and-back before continuing west to the Colona finish.
The Hennepin Hundred is Illinois' only point-to-point, all-trail ultramarathon, running from Sterling, Illinois on the Rock River to Colona, Illinois near the Mississippi, along the historic Hennepin Canal. The 50- and 100-mile courses follow the Hennepin Canal State Trail across historic locks and lift bridges, past autumn corn, farms and small towns of northwest Illinois. It has been a Western States 100 qualifying race every year since 2019, and a course many runners choose for a PR or a first 100-mile finish.
The race states it has been a Western States 100 qualifying race every year since its 2019 running. UltraSignup's results index for this event goes back to 2015, with no results year listed for 2020.
| Mile | Station | Cutoff | Crew access | Bag | Pacer | Med | To next |
|---|---|---|---|---|---|---|---|
| 0.00 | Sinnissippi Park (Start) | ? | ? | ? | ? | ? | 5.30 |
| 5.30 | Aid Station 1 | 8:50am | · | · | · | ? | 5.50 |
| 10.80 | Aid Station 2 | 10:35am | · | · | · | ? | 4.10 |
| 14.90 | Aid Station 3 | 11:50am | ● | · | · | ? | 5.50 |
| 20.40 | Aid Station 4 | 1:10pm | · | ● | · | ? | 2.70 |
| 23.10 | Aid Station 5 | 1:55pm | ● | · | · | ? | 4.20 |
| 27.30 | Aid Station 6 | 3:15pm | · | · | · | ? | 4.80 |
| 32.10 | Aid Station 7 | ? | ● | ● | · | ? | 6.60 |
| 38.70 | Aid Station 8 | ? | ● | · | · | ? | 5.60 |
| 44.30 | Aid Station 9 | ? | · | · | · | ? | 3.20 |
| 47.50 | Aid Station 10 | 8:45pm | ● | ● | ● | ? | 3.00 |
| 50.50 | Aid Station 11 | 10:00pm | · | · | · | ? | 3.40 |
| 53.90 | Aid Station 12 | 10:45pm | ● | ● | ● | ? | 3.20 |
| 57.10 | Aid Station 13 | 11:40pm | · | · | · | ? | 5.20 |
| 62.30 | Aid Station 14 | 1:15am | ● | · | · | ? | 6.60 |
| 68.90 | Aid Station 15 | 3:15am | ● | ● | ● | ? | 5.70 |
| 74.60 | Aid Station 16 | 5:05am | ● | · | ● | ? | 5.00 |
| 79.60 | Aid Station 17 | 6:33am | · | · | ● | ? | 4.10 |
| 83.70 | Aid Station 18 | 8:07am | · | · | ● | ? | 4.40 |
| 88.10 | Aid Station 19 | 9:26am | ● | ● | ● | ? | 6.60 |
| 94.70 | Aid Station 20 | 11:25am | ● | · | ● | ? | 5.40 |
| 100.10 | 100 Mile Finish | 1:00pm | ● | ? | ? | ? | ? |
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