David Maziarz
San Francisco, CA
Bib: 13099 M 39

⏱️ Race Timeline
The Course
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A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.
Half Splits
Checkpoint Splits
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment Time | Segment Pace | Diff |
|---|---|---|---|---|---|---|---|
1.40M | 1.40 mi | 07:00:13 | 14:28 | 10:20 | 14:28 | 10:20 | - |
2.13M | 2.13 mi | 07:15:09 | 29:24 | 13:48 | 14:56 | 20:27 | +10:07 |
6.43M | 6.43 mi | 08:12:18 | 1:26:33 | 13:28 | 57:09 | 13:17 | -7:10 |
6.62M | 6.62 mi | 08:04:14 | 1:18:29 | 11:51 | -43:-25 | -56:42 | |
10.65M | 10.65 mi | 08:50:50 | 2:05:05 | 11:45 | 46:36 | 11:34 | +54:59 |
Finish | 13.11 mi | 09:17:24 | 2:31:39 | 11:34 | 26:34 | 10:48 | -0:46 |
Checkpoints & Pacing
📈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
-44:-25 /mi
Average Pace
11:34 /mi
Slowest Pace
20:27 /mi
📊Segments
Segment Time Comparison
Time at Faster Pace
2:31:39
100% of race
Time at Steady Pace
0:00
0% of race
Time at Slower Pace
0:00
0% of race
Average Pace: 11:34 /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
Overall Pace Trend
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment | Pace | Trend | Rank |
|---|---|---|---|---|---|---|---|---|
1.40M | 1.40 mi | 07:00:13 | 14:28 | 10:20 | 14:28 | 10:20 | #4478 | |
2.13M | 2.13 mi | 07:15:09 | 29:24 | 13:48 | 14:56 | 20:27 | #4211 | |
6.43M | 6.43 mi | 08:12:18 | 1:26:33 | 13:28 | 57:09 | 13:17 | #4273 | |
6.62M | 6.62 mi | 08:04:14 | 1:18:29 | 11:51 | -43:-25 | #4211 | ||
10.65M | 10.65 mi | 08:50:50 | 2:05:05 | 11:45 | 46:36 | 11:34 | #4384 | |
Finish | 13.11 mi | 09:17:24 | 2:31:39 | 11:34 | 26:34 | 10:48 | #4326 |
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Males | M35-39 | Seg. Overall | Seg. Males | Seg. M35-39 |
|---|---|---|---|---|---|---|---|---|
| 1.40M | 1.40 mi | 1.40 mi | 4478 | 2681 | 353 | 4478(Top 74%) | 2681(Top 80%) | 353(Top 76%) |
| 2.13M | 2.13 mi | 0.73 mi | 4211+267 | 2568+113 | 344+9 | 4113(Top 68%) | 2501(Top 75%) | 337(Top 73%) |
| 6.43M | 6.43 mi | 4.30 mi | 4273-62 | 2614-46 | 363-19 | 4336(Top 71%) | 2631(Top 79%) | 366(Top 79%) |
| 6.62M | 6.62 mi | 0.19 mi | 4211+62 | 2575+39 | 357+6 | - | - | - |
| 10.65M | 10.65 mi | 4.03 mi | 4384-173 | 2643-68 | 361-4 | 4678(Top 77%) | 2769(Top 83%) | 383(Top 83%) |
| Finish | 13.11 mi | 2.46 mi | 4326+58 | 2606+37 | 359+2 | 4098(Top 67%) | 2446(Top 73%) | 346(Top 75%) |
Segment Performance Analysis
Start → 1.40M
0.0 - 1.4 mi
Overall
4478
Males
2681
M35-39
354
1.40M→2.13M
1.4 - 2.1 mi
Overall
4113
Males
2501
M35-39
338
2.13M→6.43M
2.1 - 6.4 mi
Overall
4336
Males
2631
M35-39
366
6.43M→6.62M
6.4 - 6.6 mi
Overall
-
Males
-
M35-39
-
6.62M→10.65M
6.6 - 10.7 mi
Overall
4678
Males
2769
M35-39
383
10.65M→Finish
10.7 - 13.1 mi
Overall
4098
Males
2446
M35-39
346
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 1.40M | - | - | - | - | #4478 |
| 1.40M → 2.13M | 345 | 78 | +267 | #4478 | #4211 |
| 2.13M → 6.43M | 266* | 328 | -62 | #4211 | #4273 |
| 6.43M → 6.62M | 96 | 34 | +62 | #4273 | #4211 |
| 6.62M → 10.65M | 67* | 240 | -173 | #4211 | #4384 |
| 10.65M → Finish | 112* | 54 | +58 | #4384 | #4326 |
| TOTALS | 886* | 734 | +152 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Visuals
🔄Passing Circle
🌊Position Flow
🏃Race Lanes
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