Sandy Pelkowsky
Bib: 1738 β’F β’Age: 26
South Boston, MA

Race Timeline and Course Information
Your journey through the course with elevation, pacing, and checkpoint details
β±οΈ Race Timeline
Watch your race unfold from start to finish
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 |
|---|---|---|---|---|---|---|---|
5K | 3.11 mi | 07:45:51 | 27:15 | 8:47 | 27:15 | 8:47 | - |
10K | 6.21 mi | 08:13:20 | 54:44 | 8:49 | 27:29 | 8:51 | +0:04 |
15K | 9.32 mi | 08:41:07 | 1:22:31 | 8:52 | 27:47 | 8:57 | +0:06 |
Half | 13.10 mi | 09:14:45 | 1:56:09 | 8:53 | 33:38 | 8:55 | -0:02 |
25K | 15.53 mi | 09:36:13 | 2:17:37 | 8:52 | 21:28 | 8:49 | -0:06 |
30K | 18.64 mi | 10:03:45 | 2:45:09 | 8:52 | 27:32 | 8:52 | +0:03 |
35K | 21.75 mi | 10:30:29 | 3:11:53 | 8:50 | 26:44 | 8:37 | -0:15 |
40K | 24.85 mi | 10:57:53 | 3:39:17 | 8:50 | 27:24 | 8:50 | +0:13 |
Finish | 26.22 mi | 11:08:52 | 3:50:16 | 8:48 | 10:59 | 8:04 | -0:46 |
Checkpoint Splits Visualizations
Explore your race data through different visual perspectives. Scroll to discover each visualization.
πPace 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
8:04 /mi
Average Pace
8:47 /mi
Slowest Pace
8:57 /mi
πSegments
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
2:48:51
73% of race
Time at Steady Pace
1:01:25
27% of race
Time at Slower Pace
0:00
0% of race
Average Pace: 8:47 /mi
π¨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
β¨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 |
|---|---|---|---|---|---|---|---|---|
5K | 3.11 mi | 07:45:51 | 27:15 | 8:47 | 27:15 | 8:47 | #5468 | |
10K | 6.21 mi | 08:13:20 | 54:44 | 8:49 | 27:29 | 8:51 | #5629 | |
15K | 9.32 mi | 08:41:07 | 1:22:31 | 8:52 | 27:47 | 8:57 | #5580 | |
Half | 13.10 mi | 09:14:45 | 1:56:09 | 8:53 | 33:38 | 8:55 | #5536 | |
25K | 15.53 mi | 09:36:13 | 2:17:37 | 8:52 | 21:28 | 8:49 | #5402 | |
30K | 18.64 mi | 10:03:45 | 2:45:09 | 8:52 | 27:32 | 8:52 | #5239 | |
35K | 21.75 mi | 10:30:29 | 3:11:53 | 8:50 | 26:44 | 8:37 | #4977 | |
40K | 24.85 mi | 10:57:53 | 3:39:17 | 8:50 | 27:24 | 8:50 | #4759 | |
Finish | 26.22 mi | 11:08:52 | 3:50:16 | 8:48 | 10:59 | 8:04 | #4623 |
Rankings
Your position at each checkpoint and how you ranked in each segment
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Females | F25-29 | Seg. Overall | Seg. Females | Seg. F25-29 |
|---|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 3.11 mi | 5468 | 1774 | 367 | 5532(Top 60%) | 1791(Top 49%) | 377(Top 64%) |
| 10K | 6.21 mi | 3.10 mi | 5629-161 | 1843-69 | 374-7 | 5848(Top 64%) | 1935(Top 53%) | 388(Top 66%) |
| 15K | 9.32 mi | 3.11 mi | 5580+49 | 1818+25 | 374 | 5532(Top 60%) | 1791(Top 49%) | 377(Top 64%) |
| Half | 13.10 mi | 3.78 mi | 5536+44 | 1793+25 | 371+3 | 5437(Top 59%) | 1745(Top 48%) | 365(Top 62%) |
| 25K | 15.53 mi | 2.43 mi | 5402+134 | 1744+49 | 368+3 | 4904(Top 53%) | 1533(Top 42%) | 331(Top 56%) |
| 30K | 18.64 mi | 3.11 mi | 5239+163 | 1683+61 | 355+13 | 4666(Top 51%) | 1470(Top 40%) | 316(Top 53%) |
| 35K | 21.75 mi | 3.11 mi | 4977+262 | 1582+101 | 338+17 | 3656(Top 40%) | 1101(Top 30%) | 263(Top 45%) |
| 40K | 24.85 mi | 3.10 mi | 4759+218 | 1515+67 | 331+7 | 3666(Top 40%) | 1207(Top 33%) | 284(Top 48%) |
| Finish | 26.22 mi | 1.37 mi | 4623+136 | 1457+58 | 322+9 | 2824(Top 31%) | 865(Top 24%) | 225(Top 38%) |
Segment Performance Analysis
10Kβ15K
0.0 - 3.1 mi
Overall
5532
Females
1791
F25-29
377
5Kβ10K
3.1 - 6.2 mi
Overall
5848
Females
1935
F25-29
388
10Kβ15K
6.2 - 9.3 mi
Overall
5532
Females
1791
F25-29
377
15KβHalf
9.3 - 13.1 mi
Overall
5437
Females
1745
F25-29
365
Halfβ25K
13.1 - 15.5 mi
Overall
4904
Females
1533
F25-29
331
25Kβ30K
15.5 - 18.6 mi
Overall
4666
Females
1470
F25-29
316
30Kβ35K
18.6 - 21.8 mi
Overall
3656
Females
1101
F25-29
263
35Kβ40K
21.8 - 24.9 mi
Overall
3666
Females
1207
F25-29
284
40KβFinish
24.9 - 26.2 mi
Overall
2824
Females
865
F25-29
225
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 β 5K | - | - | - | - | #5468 |
| 5K β 10K | 18 | 179 | -161 | #5468 | #5629 |
| 10K β 15K | 85 | 36 | +49 | #5629 | #5580 |
| 15K β Half | 78 | 34 | +44 | #5580 | #5536 |
| Half β 25K | 137 | 3 | +134 | #5536 | #5402 |
| 25K β 30K | 166 | 3 | +163 | #5402 | #5239 |
| 30K β 35K | 263* | 1 | +262 | #5239 | #4977 |
| 35K β 40K | 223* | 5 | +218 | #4977 | #4759 |
| 40K β Finish | 138 | 2 | +136 | #4759 | #4623 |
| TOTALS | 1108* | 263 | +845 |
* 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.
πPosition Graph
π¨Heatmap Timeline
πPassing Circle
πPosition Flow
πRace Lanes
Qualifying & Age Grade
See how your performance stacks up against qualifying standards
Boston Qualifying analysis available
NYC Marathon Qualifying analysis available
Olympic Trials Qualifying analysis available
Finisher Certificate
Download and share your official race completion certificate
Your certificate is generated on-demand and can be shared on social media or saved for your records
Activity Data
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Export & Support
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Export Track Data
Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.
Questions or issues regarding timing data?
If you notice any discrepancies in your timing data or have questions about your results, our support team can help.
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