Rennes Marathon
Rennes Marathon race day weather
Cool temps, light rain expected
Runners will face temperatures starting at 46°F and rising to 57°F by the finish, with a light rain expected throughout. Wind will be a factor, with a headwind during miles 7-11 and 18-22, requiring pacing adjustments in those stretches. With humidity at 82%, staying hydrated is crucial, and a light throwaway layer may be helpful during the pre-race wait.
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Rennes Marathon route and elevation
The Rennes Marathon course has about 463 ft (141 m) of climbing and 449 ft (137 m) of descent, a net rise of about 14 ft (4 m). It is flatter than 65% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 9, with 72 ft (22 m) of climbing.
Biggest climbs
- Miles 7 to 8.3: climbs about 70 ft (21 m).
- Miles 17.9 to 19.2: climbs about 70 ft (21 m).
What the hills cost
- 3:30 on a flat course is about 3:30:40 here (40 seconds slower).
- 4:00 on a flat course is about 4:00:45 here (45 seconds slower).
- 4:30 on a flat course is about 4:30:50 here (50 seconds slower).
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 3:30, 4:00 or 4:30 finish
| Mile | Climb | Descent | 3:30 | 4:00 | 4:30 |
|---|---|---|---|---|---|
| 1 | 19 ft | 16 ft | 8:00 | 9:09 | 10:18 |
| 2 | 20 ft | 23 ft | 7:59 | 9:07 | 10:15 |
| 3 | 31 ft | 28 ft | 8:02 | 9:10 | 10:19 |
| 4 | 12 ft | 18 ft | 7:57 | 9:06 | 10:15 |
| 5 | 19 ft | 25 ft | 7:58 | 9:07 | 10:14 |
| 6 | 37 ft | 1 ft | 8:18 | 9:28 | 10:39 |
| 7 | 13 ft | 50 ft | 7:50 | 8:58 | 10:06 |
| 8 | 26 ft | 12 ft | 8:07 | 9:16 | 10:25 |
| 9 | 72 ft | 78 ft | 7:58 | 9:06 | 10:15 |
| 10 | 6 ft | 9 ft | 7:58 | 9:07 | 10:15 |
| 11 | 24 ft | 19 ft | 8:02 | 9:10 | 10:19 |
| 12 | 26 ft | 26 ft | 7:59 | 9:08 | 10:16 |
| 13 | 24 ft | 21 ft | 8:01 | 9:09 | 10:18 |
| 14 | 33 ft | 28 ft | 8:02 | 9:11 | 10:20 |
| 15 | 13 ft | 26 ft | 7:56 | 9:04 | 10:12 |
| 16 | 16 ft | 17 ft | 7:59 | 9:08 | 10:16 |
| 17 | 41 ft | 9 ft | 8:15 | 9:26 | 10:36 |
| 18 | 18 ft | 44 ft | 7:53 | 9:00 | 10:09 |
| 19 | 27 ft | 12 ft | 8:07 | 9:17 | 10:26 |
| 20 | 60 ft | 71 ft | 7:56 | 9:04 | 10:12 |
| 21 | 10 ft | 12 ft | 7:59 | 9:08 | 10:16 |
| 22 | 24 ft | 27 ft | 7:59 | 9:07 | 10:16 |
| 23 | 28 ft | 25 ft | 8:01 | 9:09 | 10:18 |
| 24 | 24 ft | 21 ft | 8:01 | 9:10 | 10:18 |
| 25 | 25 ft | 23 ft | 8:00 | 9:09 | 10:18 |
| 26 | 36 ft | 37 ft | 7:59 | 9:08 | 10:16 |
| Last 0.2 | 0 ft | 7 ft | 1:44 | 1:58 | 2:13 |
Explore the Rennes Marathon course with the weather and your pace along the route, or compare it with other races.
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About the Rennes Marathon
The Rennes Marathon is a 42.195-kilometer race through downtown Rennes in Brittany, France, starting at Mail François Mitterrand and finishing at Esplanade Charles de Gaulle. The two-loop, mostly flat course passes the Vilaine riverbanks, the Parliament of Brittany and Rennes City Hall, and carries FFA gold label certification. Race weekend also includes a Saturday-night 10K and a women's 5K, with a marathon finisher cutoff of 5 hours 30 minutes. First run in 2011, the race funds tree planting based on the distance each participant covers.
