Dempsey Challenge
About this race
On Saturday, September 20th, you will have the power to participate in any way you choose as we come together to make life better for people managing the impact of cancer.
Pick your distance
Cycling
65 Mile Ride
50 Mile Ride
25 Mile Ride - "Wendy's Way"
Running
5k Run/Walk
Virtual Runner/Rider
10k Run
Gravel biking
55 mi Gravel Ride
Typical race-day weather
Based on 5 years of historical conditions on this event's race dates in Lewiston.
Course
Route map and elevation profile
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Results — Dempsey Challenge
Other races near Lewiston
Different organizers, within 40 miles, in the next three months
St. Mary's Steps for Hope 5K Run/Walk and Kids Obstacle Course
Maine Summit Trek for Tree
Last Man Standing Ultramarathon
Live Laugh Run- Becca 4-Ever in our Hearts; 5k (3 Mile) Walk or Run
🏃 Plan Your Next Race in Lewiston
Find upcoming events by distance:
- Lewiston 5K Races 4 races
- Lewiston Running Calendar 2026 5 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 5 Lewiston events
Spotted something wrong? Tell us and we'll fix it.