Blood Sugar Rumbler
- Date
- Last held Sep 12, 2026, next date to be announced
- Location
- Helena, Montana
Registration for the next edition has not opened.
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Official race websiteStart location and course
6042 Lincoln Rd W Helena, Helena, MT 59601
The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.
Course profile: how hilly is Blood Sugar Rumbler?
The 51-mile bike course climbs 3,989 feet, about 78 feet a mile: hilly.
| Course | Distance | Climbing | Terrain |
|---|---|---|---|
| 2026 Rumbler RouteBike, loop, 98% unpaved, steepest 13% | 51 mi | 3,989 ft | hilly |
| Blood Sugar BumblerBike, out and back, 98% unpaved | 26 mi | 676 ft | rolling |
From the course maps the organizers publish on Ride with GPS and MapMyRun; climbing is the total gain the map reports. Courses can change between editions, so check the date on the map.
Where Blood Sugar Rumbler ranks
- No. 5 of 27 on Hilliest gravel races
National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.
Race details
- Where
- 6042 Lincoln Rd W Helena, Helena, MT 59601Map
- Course
- Gravel
- Distances
- Gravel
- Editions
- 2026 (Sep 12, 2026), 2025 (Sep 6, 2025)
- Status
- The next edition has not been announced yet. Past events: The Blood Sugar Bumbler, The Blood Sugar Rumbler, The Blood Sugar Rumbler, The Blood Sugar Bumbler.
Organize this race? Add details or a correction
Quick answers
- When is Blood Sugar Rumbler?
- The next date has not been announced.
- How much does it cost?
- See the registration page for current pricing.
- What distances are offered?
- Gravel.
- Where does it start?
- 6042 Lincoln Rd W Helena, Helena, MT 59601.
- Is there a course map?
- Yes, the organizers publish the route on Ride with GPS; the link is under Start location and course.
From the organizers
The Blood Sugar Rumbler takes you through some of most beautiful areas of The Lewis and Clark National Forest just North West of Helena Montana. This event supports the Montana Youth Diabetes Alliance and their summer camp scholarship fund to help kids with diabetes get to summer camp. Riders will have two different ride options to choose from, either the Rumbler for 50 miles or the Bumbler for 26 miles.