Karen Duffy
Somerville, MA
Bib: 19544 F
Race Timeline
The Course
Half Splits
Your race, unpacked
See your splits, ranks & AI insights.
Checkpoint Splits
| Checkpoint | Time | Avg Pace | Segment Length | Segment Time | Segment Pace | Trend | Diff |
|---|---|---|---|---|---|---|---|
5K | 34:02 | 10:57 | 3.11 mi | 34:02 | 10:57 | - | |
10K | 1:04:14 | 10:20 | 3.10 mi | 30:12 | 9:43 | -1:14 | |
15K | 1:35:35 | 10:15 | 3.11 mi | 31:21 | 10:05 | +0:22 | |
21K | 2:14:05 | 10:17 | 3.73 mi | 38:30 | 10:20 | +0:15 | |
25K | 2:40:49 | 10:21 | 2.48 mi | 26:44 | 10:45 | +0:25 | |
30K | 3:17:33 | 10:36 | 3.11 mi | 36:44 | 11:49 | +1:04 | |
35K | 3:49:21 | 10:33 | 3.11 mi | 31:48 | 10:14 | -1:35 | |
40K | 4:18:59 | 10:25 | 3.10 mi | 29:38 | 9:32 | -0:42 | |
Finish(26.22 mi) | 4:32:32 | 10:24 | 1.37 mi | 13:33 | 9:56 | +0:24 |
Checkpoints & Pacing
Pace Line
Fastest Pace
9:32 /mi
Average Pace
10:24 /mi
Slowest Pace
11:49 /mi
Segments
Time at Faster Pace
59:50
22% of race
Time at Steady Pace
1:55:12
42% of race
Time at Slower Pace
1:37:30
36% of race
Average Pace: 10:24 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Seg. Dist | Overall | Females | F30-34 | Seg. Overall | Seg. Females | Seg. F30-34 |
|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 17804 | 5982 | 855 | 15259 | 4872 | 715 |
| 10K | 3.10 mi | 15777+2027 | 5046+936 | 723+132 | 13864 | 4224 | 610 |
| 15K | 3.11 mi | 15494+283 | 4939+107 | 720+3 | 15259 | 4872 | 715 |
| 21K | 3.73 mi | 15173+321 | 4806+133 | 700+20 | 14896 | 4745 | 700 |
| 25K | 2.48 mi | 15407-234 | 4963-157 | 737-37 | 17096 | 5976 | 858 |
| 30K | 3.11 mi | 15921-514 | 5291-328 | 785-48 | 17933 | 6581 | 961 |
| 35K | 3.11 mi | 14693+1228 | 4874+417 | 720+65 | 10031 | 3343 | 507 |
| 40K | 3.10 mi | 13192+1501 | 4371+503 | 648+72 | 6069 | 1876 | 284 |
| Finish(26.22 mi) | 1.37 mi | 12781+411 | 4253+118 | 638+10 | 7664 | 2650 | 408 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
15259
Females
4872
F30-34
4872
5K→10K
3.1 - 6.2 mi
Overall
13864
Females
4224
F30-34
4224
10K→15K
6.2 - 9.3 mi
Overall
15259
Females
4872
F30-34
4872
15K→21K
9.3 - 13.1 mi
Overall
14896
Females
4745
F30-34
4745
21K→25K
13.1 - 15.5 mi
Overall
17096
Females
5976
F30-34
5976
25K→30K
15.5 - 18.6 mi
Overall
17933
Females
6581
F30-34
6581
30K→35K
18.6 - 21.8 mi
Overall
10031
Females
3343
F30-34
3343
35K→40K
21.8 - 24.9 mi
Overall
6069
Females
1876
F30-34
1876
40K→Finish
24.9 - 26.2 mi
Overall
7664
Females
2650
F30-34
2650
Passing Analysis
| Segment | Movement | Rank |
|---|---|---|
| Start → 5K | - | #17804 |
| 5K → 10K | 342061*+2027 | #17804 → #15777 |
| 10K → 15K | 198481*+283 | #15777 → #15494 |
| 15K → 21K | 199520*+321 | #15494 → #15173 |
| 21K → 25K | 473239*-234 | #15173 → #15407 |
| 25K → 30K | 742228*-514 | #15407 → #15921 |
| 30K → 35K | 141242*+1228 | #15921 → #14693 |
| 35K → 40K | 11502*+1501 | #14693 → #13192 |
| 40K → Finish | 6417*+411 | #13192 → #12781 |
| TOTALS | 16676690*+5023 | #17804 → #12781 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Visualized
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