My Better Half Marathon
My Better Half Marathon race day weather
Cool morning, light rain possible
Runners will face a cool start at 38°F, rising to 40°F by the finish. With humidity at 78% and a light rain expected, hydration should be prioritized. The wind will be light, but headwinds will challenge runners during miles 3, 6-9, and 12-13, necessitating pacing adjustments. A throwaway layer may be useful during pre-race as temperatures feel as low as 34°F.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for My Better Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
My Better Half Marathon route and elevation
The My Better Half Marathon course has about 123 ft (37 m) of climbing and 117 ft (36 m) of descent, and finishes near the elevation it starts. It is flatter than 58% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 1, with 93 ft (28 m) of climbing and a 1.1% average grade.
Biggest climbs
- Miles 0.5 to 0.6: climbs about 65 ft (19 m).
What the hills cost
- 1:45 on a flat course is about 1:45:20 here (20 seconds slower).
- 2:00 on a flat course is about 2:00:20 here (20 seconds slower).
- 2:15 on a flat course is about 2:15:25 here (25 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 1:45, 2:00 or 2:15 finish
| Mile | Climb | Descent | 1:45 | 2:00 | 2:15 |
|---|---|---|---|---|---|
| 1 | 93 ft | 35 ft | 8:28 | 9:40 | 10:53 |
| 2 | 10 ft | 66 ft | 7:46 | 8:53 | 9:59 |
| 3 | 10 ft | 10 ft | 7:59 | 9:07 | 10:16 |
| 4 | 15 ft | 21 ft | 7:57 | 9:06 | 10:14 |
| 5 | 10 ft | 11 ft | 7:59 | 9:07 | 10:15 |
| 6 | 14 ft | 15 ft | 7:59 | 9:07 | 10:16 |
| 7 | 25 ft | 14 ft | 8:04 | 9:14 | 10:22 |
| 8 | 10 ft | 12 ft | 7:58 | 9:06 | 10:16 |
| 9 | 9 ft | 9 ft | 7:59 | 9:08 | 10:15 |
| 10 | 16 ft | 20 ft | 7:58 | 9:06 | 10:15 |
| 11 | 8 ft | 14 ft | 7:58 | 9:06 | 10:14 |
| 12 | 11 ft | 9 ft | 8:00 | 9:08 | 10:17 |
| 13 | 23 ft | 15 ft | 8:03 | 9:12 | 10:21 |
| Last 0.1 | 0 ft | 5 ft | 0:52 | 1:00 | 1:07 |
Explore the My Better Half Marathon course with the weather and your pace along the route, or compare it with other races.
Get your personalized My Better Half Marathon race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
About the My Better Half Marathon
My Better Half Marathon is a Valentine's Day themed race held each February at Seward Park in Seattle, Washington. The half marathon is two laps along the shore of Lake Washington: a 6.9-mile first lap with a steep early hill, then a flat 6.2-mile second lap. A 10K, a 5K and a two-person half marathon relay start from the same park, and a portion of each entry supports Rebuilding Together Seattle.