Running
Marathon
42.2 km
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Race month
December · 46°–65°
Field size
50,000
Distances
42.2k, 29k, 24.8k, 21.1k, 20.3k, 14.4k, 10k, 8.4k, 5k, 3.5k, Annapurna III, Denali, Mount Everest, Mount Rainier, Mount St. Helens, Rattlesnake Mountain
Distances
Running
Run the River Marathon
42.2 km
28.00 EUR
Running
Climb 89 - Everest (100 laps)
29 km
Running
Annapurna III (85 laps)
24.8 km
Running
Half Marathon
21.1 km
Running
Denali (70 laps)
20.3 km
Running
Mt. Rainier (50 laps)
14.4 km
Running
10k
10 km
Running
Mt. St. Helens (29 laps)
8.4 km
Running
5k
5 km
Running
Rattlesnake Mountain (13 laps)
3.5 km
Running
Climb 89
3.5 km
Running
Annapurna III
Start: 09:00 PM
Running
Denali
Start: 09:00 PM
Running
Mount Everest
Start: 09:00 PM
Running
Mount Rainier
Start: 09:00 PM
Running
Mount St. Helens
Start: 09:00 PM
Running
Rattlesnake Mountain
Start: 09:00 PM
Finish-time calculator
Your finish time
Slide to your target pace — and see when you’ll hit the line.
6:00
min / km
← faster · 2:0012:00 · easier →
4:13:10
Estimated finish · 42.2 km
10 km1:00:00
5 km30:00
Where am I when? · Splits
Start
0:00
5 km
30:00
10 km
1:00:00
15 km
1:30:00
20 km
2:00:00
Half
2:06:35
25 km
2:30:00
30 km
3:00:00
35 km
3:30:00
40 km
4:00:00
Finish
4:13:10
Estimates only · form, weather, and hills can change the result.
Course & climate
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What to expect
What makes this race distinct — for training and race day.
Climb 89 is a hill repeat event that allows participants to 'Everest' on foot. Performing enough repeats of a single climb to gain at least 29,032 ft of elevation, with 5 other 'mountain' options available. The course is 0.35 mile with 292 ft of elevation gain per lap.
The field
50,000
Catering & aid stations
Water, electrolytes, and various snacks will be provided at the start/finish area throughout the event. Additional food will be available for breakfast, lunch, and dinner at times listed in the Schedule of Events.
Pacers
There are no official pacers for this event, but the course is open to the public, so others may join you. They may not carry anything for you or provide any physical assistance to you or other participants. We do ask that they do not utilize the aid station however. While crewing is allowed, please minimize the number of people to avoid congestion in the start/finish area.
What does it cost?
| Run the River Marathon | 28.00 EUR |
|---|
What's included in entry
- Event entry
- Food and snacks at start/finish
- Finisher award
Stay & get to the start
Getting there
Assumed starting point
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Estimating travel…
Hotels near the start
Last updated: Jun 6, 2026, 12:15:36 AM
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On your marks
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