Patrick O’Brien
Lorton, VA
Bib: 13643 M

⏱️ 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 |
|---|---|---|---|---|---|---|---|
5K | 3.11 mi | 08:09:33 | 32:39 | 10:31 | 32:39 | 10:31 | - |
10K | 6.21 mi | 08:40:08 | 1:03:14 | 10:11 | 30:35 | 9:51 | -0:40 |
15K | 9.32 mi | 09:12:07 | 1:35:13 | 10:13 | 31:59 | 10:18 | +0:27 |
21K | 13.05 mi | 09:52:32 | 2:15:38 | 10:24 | 40:25 | 10:50 | +0:32 |
25K | 15.53 mi | 10:17:47 | 2:40:53 | 10:21 | 25:15 | 10:10 | -0:40 |
30K | 18.64 mi | 10:51:08 | 3:14:14 | 10:25 | 33:21 | 10:44 | +0:34 |
35K | 21.75 mi | 11:26:25 | 3:49:31 | 10:33 | 35:17 | 11:21 | +0:37 |
40K | 24.85 mi | 12:02:31 | 4:25:37 | 10:41 | 36:06 | 11:37 | +0:16 |
Finish | 26.22 mi | 12:17:49 | 4:40:55 | 10:43 | 15:18 | 11:13 | -0:24 |
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
9:51 /mi
Average Pace
10:43 /mi
Slowest Pace
11:37 /mi
📊Segments
Segment Time Comparison
Time at Faster Pace
3:14:14
69% of race
Time at Steady Pace
1:26:41
31% of race
Time at Slower Pace
0:00
0% of race
Average Pace: 10:43 /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 |
|---|---|---|---|---|---|---|---|---|
5K | 3.11 mi | 08:09:33 | 32:39 | 10:31 | 32:39 | 10:31 | #14896 | |
10K | 6.21 mi | 08:40:08 | 1:03:14 | 10:11 | 30:35 | 9:51 | #14719 | |
15K | 9.32 mi | 09:12:07 | 1:35:13 | 10:13 | 31:59 | 10:18 | #15250 | |
21K | 13.05 mi | 09:52:32 | 2:15:38 | 10:24 | 40:25 | 10:50 | #15848 | |
25K | 15.53 mi | 10:17:47 | 2:40:53 | 10:21 | 25:15 | 10:10 | #15432 | |
30K | 18.64 mi | 10:51:08 | 3:14:14 | 10:25 | 33:21 | 10:44 | #14947 | |
35K | 21.75 mi | 11:26:25 | 3:49:31 | 10:33 | 35:17 | 11:21 | #14741 | |
40K | 24.85 mi | 12:02:31 | 4:25:37 | 10:41 | 36:06 | 11:37 | #14555 | |
Finish | 26.22 mi | 12:17:49 | 4:40:55 | 10:43 | 15:18 | 11:13 | #14401 |
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Males | M40-44 | Seg. Overall | Seg. Males | Seg. M40-44 |
|---|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 3.11 mi | 14896 | 10221 | 1317 | 16510(Top 55%) | 11102(Top 63%) | 1446(Top 62%) |
| 10K | 6.21 mi | 3.10 mi | 14719+177 | 10125+96 | 1304+13 | 14609(Top 49%) | 10073(Top 57%) | 1305(Top 56%) |
| 15K | 9.32 mi | 3.11 mi | 15250-531 | 10415-290 | 1341-37 | 16510(Top 55%) | 11102(Top 63%) | 1446(Top 62%) |
| 21K | 13.05 mi | 3.73 mi | 15848-598 | 10739-324 | 1406-65 | 17616(Top 59%) | 11653(Top 66%) | 1533(Top 66%) |
| 25K | 15.53 mi | 2.48 mi | 15432+416 | 10459+280 | 1369+37 | 14303(Top 48%) | 9618(Top 54%) | 1263(Top 54%) |
| 30K | 18.64 mi | 3.11 mi | 14947+485 | 10081+378 | 1322+47 | 13663(Top 45%) | 9048(Top 51%) | 1187(Top 51%) |
| 35K | 21.75 mi | 3.11 mi | 14741+206 | 9850+231 | 1295+27 | 14406(Top 48%) | 9087(Top 51%) | 1174(Top 50%) |
| 40K | 24.85 mi | 3.10 mi | 14555+186 | 9589+261 | 1241+54 | 13787(Top 46%) | 8475(Top 48%) | 1088(Top 47%) |
| Finish | 26.22 mi | 1.37 mi | 14401+154 | 9468+121 | 1229+12 | 12747(Top 42%) | 7867(Top 44%) | 998(Top 43%) |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
16510
Males
11102
M40-44
11102
5K→10K
3.1 - 6.2 mi
Overall
14609
Males
10073
M40-44
10073
10K→15K
6.2 - 9.3 mi
Overall
16510
Males
11102
M40-44
11102
15K→21K
9.3 - 13.1 mi
Overall
17616
Males
11653
M40-44
11653
21K→25K
13.1 - 15.5 mi
Overall
14303
Males
9618
M40-44
9618
25K→30K
15.5 - 18.6 mi
Overall
13663
Males
9048
M40-44
9048
30K→35K
18.6 - 21.8 mi
Overall
14406
Males
9087
M40-44
9087
35K→40K
21.8 - 24.9 mi
Overall
13787
Males
8475
M40-44
8475
40K→Finish
24.9 - 26.2 mi
Overall
12747
Males
7867
M40-44
7867
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 5K | - | - | - | - | #14896 |
| 5K → 10K | 503* | 326 | +177 | #14896 | #14719 |
| 10K → 15K | 177* | 708 | -531 | #14719 | #15250 |
| 15K → 21K | 240* | 838 | -598 | #15250 | #15848 |
| 21K → 25K | 521* | 105 | +416 | #15848 | #15432 |
| 25K → 30K | 624* | 139 | +485 | #15432 | #14947 |
| 30K → 35K | 495* | 289 | +206 | #14947 | #14741 |
| 35K → 40K | 445* | 259 | +186 | #14741 | #14555 |
| 40K → Finish | 208* | 54 | +154 | #14555 | #14401 |
| TOTALS | 3213* | 2718 | +495 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Visuals
🔄Passing Circle
🌊Position Flow
🏃Race Lanes
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Race managed by
U.S. Marine Corps Community Services (MCCS)
Race timed by
Timing Productions