
From the Organizer
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 get to summer camp. Riders will have two different ride options to choose from, either the Rumbler for 55 miles or the Bumbler for 26 miles.
The Rumbler includes 5,000+ft of climbing within 55 miles of forest services roads and is geared towards the more advanced gravel rider. The climbs are challenging and somewhat technical yet the down hills are worth it.
The Bumbler is 26 miles of an out and back, rolling dirt road that follows the Prickly Pear Creek through a beautiful canyon. This is a great route for anyone just looking for a fun morning out with friends. Both courses will have aid stations with water, Hammer Nutrition products and food.
Click the link below to see the Blood Sugar Bumbler route.
https://ridewithgps.com/routes/51062595
Click the link below to see the Blood Sugar Rumbler route.
https://ridewithgps.com/routes/49794964
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
69°
Typical Low
40°
Chance of Rain
19%
Based on US Climate Normals data from Austin 1 W, 8 mi from the venue.
Host City
Population
33,126
as of 2023
City Elevation
3,825 ft
Nearest Airport
HLN
Helena Regional Airport · 2 mi
Time Zone
Mountain Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Blood Sugar Rumbler, put it on the calendar, and turn “someday” into a start date.
87
Days to train
Coming Up
Monarch Grind
211 miles away
Koocanusa Scramble
206 miles away
The Last Best Ride presented by ENVE
153 miles away
Get Lost Gravel
101 miles away
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Gravel riding takes you off the pavement and onto mixed terrain — dirt roads, packed gravel, and everything in between — for a cycling experience that's more adventure than race.
The community is famously welcoming, the scenery is usually worth it, and finishing feels like you actually went somewhere.
Off-road cycling on mixed terrain — pavement, gravel, dirt. More adventure than road racing, more accessible than mountain biking.
Frequently Asked Questions (FAQs)
Blood Sugar Rumbler
Sep 12, 2026