Shantar Alarcon
Bib: 25864•M•Age: 28
South San Francisco, CA
Race Timeline and Course Information
Your journey through the course with elevation, pacing, and checkpoint details
⏱️ Race Timeline
Watch your race unfold from start to finish
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An AI deep-dive into your pacing, rankings, and passing — built from your real splits and emailed to you, free.
Splits & Pacing
Detailed breakdown of your race performance at each timing point
Half Splits
Checkpoint Splits
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment Time | Segment Pace | Diff |
|---|---|---|---|---|---|---|---|
2M | 2.00 mi | 09:13:31 | 22:18 | 11:09 | 22:18 | 11:09 | - |
4M | 4.00 mi | 09:39:02 | 47:49 | 11:57 | 25:31 | 12:46 | +1:37 |
6M | 6.00 mi | 10:08:40 | 1:17:27 | 12:55 | 29:38 | 14:49 | +2:03 |
8M | 8.00 mi | 10:27:25 | 1:36:12 | 12:01 | 18:45 | 9:22 | -5:27 |
10M | 10.00 mi | 10:58:33 | 2:07:20 | 12:44 | 31:08 | 15:34 | +6:12 |
12M | 12.00 mi | 11:27:39 | 2:36:26 | 13:02 | 29:06 | 14:33 | -1:01 |
Finish | 13.11 mi | 11:42:03 | 2:50:50 | 13:02 | 14:24 | 12:59 | -1:34 |
Checkpoint Splits Visualizations
Explore your race data through different visual perspectives. Scroll to discover each visualization.
📈Pace Line
Pace Progression
Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.
Fastest Pace
9:22 /mi
Average Pace
13:02 /mi
Slowest Pace
15:34 /mi
📊Segments
Segment Time Comparison
Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.
Time at Faster Pace
41:03
24% of race
Time at Steady Pace
39:55
23% of race
Time at Slower Pace
1:29:52
53% of race
Average Pace: 13:02 /mi
🎨Heatmap
Pace Heatmap
Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.
Click or hover over segments to see details
✨Sparklines
Checkpoint Splits with Pace Trends
Enhanced split table showing pace trends through mini sparkline visualizations.
Overall Pace Trend
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment | Pace | Trend | Rank |
|---|---|---|---|---|---|---|---|---|
2M | 2.00 mi | 09:13:31 | 22:18 | 11:09 | 22:18 | 11:09 | #2913 | |
4M | 4.00 mi | 09:39:02 | 47:49 | 11:57 | 25:31 | 12:46 | #3294 | |
6M | 6.00 mi | 10:08:40 | 1:17:27 | 12:55 | 29:38 | 14:49 | #3256 | |
8M | 8.00 mi | 10:27:25 | 1:36:12 | 12:01 | 18:45 | 9:22 | #3233 | |
10M | 10.00 mi | 10:58:33 | 2:07:20 | 12:44 | 31:08 | 15:34 | #3388 | |
12M | 12.00 mi | 11:27:39 | 2:36:26 | 13:02 | 29:06 | 14:33 | #3380 | |
Finish | 13.11 mi | 11:42:03 | 2:50:50 | 13:02 | 14:24 | 12:59 | #3347 |
Rankings
Your position at each checkpoint and how you ranked in each segment
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Males | M25-29 | Seg. Overall | Seg. Males | Seg. M25-29 |
|---|---|---|---|---|---|---|---|---|
| 2M | 2.00 mi | 2.00 mi | 2913 | 1710 | 429 | 3336(Top 87%) | 1854(Top 90%) | 460(Top 91%) |
| 4M | 4.00 mi | 2.00 mi | 3294-381 | 1856-146 | 461-32 | 3475(Top 90%) | 1919(Top 93%) | 474(Top 94%) |
| 6M | 6.00 mi | 2.00 mi | 3256+38 | 1842+14 | 461 | 3206(Top 83%) | 1837(Top 89%) | 460(Top 91%) |
| 8M | 8.00 mi | 2.00 mi | 3233+23 | 1839+3 | 456+5 | 3137(Top 82%) | 1798(Top 87%) | 454(Top 90%) |
| 10M | 10.00 mi | 2.00 mi | 3388-155 | 1901-62 | 473-17 | 3668(Top 96%) | 1991(Top 96%) | 481(Top 96%) |
| 12M | 12.00 mi | 2.00 mi | 3380+8 | 1892+9 | 472+1 | 3336(Top 87%) | 1854(Top 90%) | 460(Top 91%) |
| Finish | 13.11 mi | 1.11 mi | 3347+33 | 1873+19 | 469+3 | 3055(Top 80%) | 1727(Top 84%) | 429(Top 85%) |
Segment Performance Analysis
10M→12M
0.0 - 2.0 mi
Overall
3336
Males
1854
M25-29
460
2M→4M
2.0 - 4.0 mi
Overall
3475
Males
1919
M25-29
474
4M→6M
4.0 - 6.0 mi
Overall
3206
Males
1837
M25-29
460
6M→8M
6.0 - 8.0 mi
Overall
3137
Males
1798
M25-29
454
8M→10M
8.0 - 10.0 mi
Overall
3668
Males
1991
M25-29
481
10M→12M
10.0 - 12.0 mi
Overall
3336
Males
1854
M25-29
460
12M→Finish
12.0 - 13.1 mi
Overall
3055
Males
1727
M25-29
429
Passing
Athletes you passed and who passed you throughout the race
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 2M | - | - | - | - | #2913 |
| 2M → 4M | 12 | 393 | -381 | #2913 | #3294 |
| 4M → 6M | 64 | 26 | +38 | #3294 | #3256 |
| 6M → 8M | 37* | 14 | +23 | #3256 | #3233 |
| 8M → 10M | 5* | 160 | -155 | #3233 | #3388 |
| 10M → 12M | 22 | 14 | +8 | #3388 | #3380 |
| 12M → Finish | 37* | 4 | +33 | #3380 | #3347 |
| TOTALS | 177* | 611 | -434 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Analysis Visualizations
Explore your passing analysis through 5 different visualizations. Scroll to discover each one.
📈Position Graph
🎨Heatmap Timeline
🔄Passing Circle
🌊Position Flow
🏃Race Lanes
Activity Data
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Official Timing Data
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Race managed by
The San Francisco Marathon
