Historic series
Marathon River Swim Series
The series' river marathons: the Charente at Cognac, the Ebro between Tivenys and Tortosa and the Glomma in Norway. Until 2024 the Thames was part of it, and its finishes still count. The crown goes to whoever completes three rivers.
- 3
- Stages
- 74.8 km
- Distance
- 10
- Finishers
The level of the series
Level 5 of 5
- DistanceThe longest stage.
- 5
- TemperatureThe average water temperature in the months when swimmers swim the stage.Rated on 1 stages out of 4.
- Not rated yet
- WaterCurrents, tides, waves, wildlife.
- Not rated yet
- LogisticsBoat and observer, windows, waiting lists, distance from airports.
- Not rated yet
- CostWhat one solo swimmer pays, without travel and accommodation.
- 2
Each factor goes from 1 to 5, with the same rule for every series. For distance, temperature and water the series takes the highest value among its stages; for logistics and cost it adds up the stages and divides by three. The level of the series is the highest of the five. 3 stages out of 4 are enough: for each factor the easiest combination counts.
Stage by stage
| Stages | Distance | Temperature | Water | Logistics | Cost |
|---|---|---|---|---|---|
| 1. Le Flow des Gabarriers 33.0 km | 5 | — | — | — | 2 |
| 2. UltraEbre Swim Marathon 30.8 km · 26 °C on average in July | 5 | 1 | — | — | 2 |
| 3. GlommaDyppen 11.0 km | 3 | — | — | — | 1 |
| 4. Thames Marathon 13.0 km | 3 | — | — | — | 2 |