Ridge Rider Dual
🏔️ Imperial Century (100 mi)⚡ Half Century (50 mi)
📍 Spearfish, SD
100 Mi
Century Course
📅 Jun 12, 2027
Event Date
$275
Registration
In-Person (Offline)
Event Format
🚴 Event Overview
The Ridge Rider Dual Consists of 2 races: The 100 mile Pine Island Gravel Odyssey and the 50 mile Dakota Five-O. Limited to 100 participants! Registration will be open from October 1st through March 15th. Please understand there are no refunds once you sign up for this race. If you sign up for this event you are committed to doing both events, so this is a risk you will have to be willing to take! The bonus...
Course Amenities & Highlights:
100MHalf CenturyRoad
Regional Terrain & Profile: Black Hills granite peaks and pine forests, Badlands dramatic formations, and Missouri River plains
📍 Event Map & Location
👆 Tap or use 2 fingers to interact
Spearfish
Spearfish SD Spearfish, SD 57783
GPS: 44.490817, -103.85937
⚡ Event Specifications & Schedule
Verified logistical details, course specs, and event attributes for riders and participants.
| Dataset Population | 2027 Forward Calendar Active forward calendar entry for rider scheduling; isolated from the 2026 Census baseline count. Methodology → |
| Qualified Distances | 🏔️ Imperial Century (100 mi)⚡ Half Century (50 mi) |
| Event Type | Cycling Century |
| Sport | Road Cycling |
| Event Name | Ridge Rider Dual |
| Event Status | Scheduled |
| Attendance | In-Person (Offline) |
| Start Date | 📅 Jun 12, 2027 |
| Street Address | Spearfish SD |
| City / Locality | Spearfish |
| State / Region | SD |
| Postal / Zip | 57783 |
| GPS Coordinates | 44.490817, -103.85937 |
| Host / Organizer | Ridge Rider Racing, LLC ↗ |
| Registration Fee | $275 |
| Registration Link | Official Registration ↗ |