Marathon Erg Protocol
By the Watta Team · Updated March 2026
Advanced180 minRowErg
The full erg marathon (42,195 metres) is one of the most gruelling endurance challenges in indoor sport. Lasting 2.5-3.5 hours, it requires months of base-building, meticulous pacing, a nutrition plan, and extraordinary mental fortitude.
Warm-Up
| Interval | Target Split | Rest | Notes |
|---|---|---|---|
| 8 min | 2:20-2:30 | - | Very easy rowing at 18 spm |
| 3 x 1 min | Marathon target | 1:00 easy | Rehearse target pace |
| 3 min | 2:25+ | - | Rest, final preparations |
Main Set
| Interval | Target Split | Rest | Notes |
|---|---|---|---|
| 10000m | 2:05-2:15 | - | First quarter: conservative start at 20-22 spm |
| 10000m | 2:05-2:15 | - | Second quarter: drink and eat on schedule |
| 10000m | 2:05-2:15 | - | Third quarter: mental battle, hold form |
| 10000m | 2:05-2:15 | - | Final push: count down each 1000m |
| 2195m | 2:03-2:13 | - | Sprint the final 2K if you have anything left |
Cool-Down
| Interval | Target Split | Rest | Notes |
|---|---|---|---|
| 5 min | Very easy | - | Extended gentle rowing |
| 5 min | Very easy | - | Continue light movement, rehydrate and refuel |
Coaching Notes
- +Your marathon split should be roughly 20-30 seconds above your 2K split.
- +Create a nutrition plan: water every 15 min, energy gel or food every 30-45 min.
- +Use a seat pad — prolonged sitting causes significant discomfort without one.
- +Break the marathon into 8 segments of ~5K rather than thinking about the total distance.
- +Have entertainment ready — music, podcasts, or even a screen for video. This is as much mental as physical.
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