San Antonio Marathon
San Antonio Marathon race day weather
Cool morning, steady wind shifts
Runners will face a temperature rise from 49°F at the start to 59°F by finish, with an average humidity of 62%. Winds from the N will create headwinds during critical segments from Miles 2-11 and 15-16, necessitating pacing adjustments. With a light tailwind in the early and later miles, runners should capitalize on these sections to maintain their speed while remaining mindful of the wind shifts.
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San Antonio Marathon route and elevation
The San Antonio Marathon course has about 824 ft (251 m) of climbing and 820 ft (250 m) of descent, and finishes near the elevation it starts. It is hillier than 69% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 12, with 125 ft (38 m) of climbing and a 1.6% average grade.
Biggest climbs
- Miles 8.4 to 9.2: climbs about 95 ft (29 m).
- Miles 11.4 to 12.2: climbs about 120 ft (36 m).
- Miles 19.9 to 21.3: climbs about 90 ft (28 m).
What the hills cost
- 3:30 on a flat course is about 3:31 here (1 minute slower).
- 4:00 on a flat course is about 4:02 here (2 minutes slower).
- 4:30 on a flat course is about 4:32 here (2 minutes 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 | 0 ft | 22 ft | 7:51 | 8:59 | 10:06 |
| 2 | 19 ft | 7 ft | 8:03 | 9:11 | 10:21 |
| 3 | 23 ft | 10 ft | 8:03 | 9:12 | 10:21 |
| 4 | 15 ft | 15 ft | 7:57 | 9:06 | 10:13 |
| 5 | 24 ft | 8 ft | 8:05 | 9:14 | 10:24 |
| 6 | 21 ft | 15 ft | 8:00 | 9:08 | 10:16 |
| 7 | 18 ft | 18 ft | 7:56 | 9:05 | 10:13 |
| 8 | 3 ft | 14 ft | 7:55 | 9:02 | 10:10 |
| 9 | 85 ft | 4 ft | 8:37 | 9:52 | 11:06 |
| 10 | 35 ft | 30 ft | 8:00 | 9:07 | 10:16 |
| 11 | 48 ft | 94 ft | 7:46 | 8:53 | 9:59 |
| 12 | 125 ft | 42 ft | 8:39 | 9:53 | 11:08 |
| 13 | 59 ft | 47 ft | 8:03 | 9:12 | 10:20 |
| 14 | 52 ft | 80 ft | 7:50 | 8:57 | 10:05 |
| 15 | 50 ft | 41 ft | 8:01 | 9:10 | 10:18 |
| 16 | 51 ft | 52 ft | 7:56 | 9:05 | 10:13 |
| 17 | 11 ft | 49 ft | 7:48 | 8:54 | 10:01 |
| 18 | 93 ft | 66 ft | 8:10 | 9:20 | 10:30 |
| 19 | 16 ft | 94 ft | 7:40 | 8:45 | 9:51 |
| 20 | 81 ft | 61 ft | 8:07 | 9:17 | 10:26 |
| 21 | 78 ft | 7 ft | 8:33 | 9:46 | 11:00 |
| 22 | 8 ft | 24 ft | 7:53 | 9:01 | 10:08 |
| 23 | 2 ft | 28 ft | 7:50 | 8:58 | 10:05 |
| 24 | 15 ft | 41 ft | 7:51 | 8:58 | 10:06 |
| 25 | 8 ft | 61 ft | 7:45 | 8:51 | 9:57 |
| 26 | 11 ft | 16 ft | 7:55 | 9:03 | 10:11 |
| Last 0.2 | 0 ft | 1 ft | 1:46 | 2:01 | 2:16 |
Explore the San Antonio Marathon course with the weather and your pace along the route, or compare it with other races.
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About the San Antonio Marathon
The San Antonio Marathon is held in early December in downtown San Antonio, Texas, with a marathon, a half marathon and a Friday-night 5K. The marathon and half marathon start at 7:15 AM and finish at Hemisfair. The marathon course is USATF-certified and a Boston qualifier. The race is organized by San Antonio Sports with the City of San Antonio. Source
