Justin Grigg
Bellingham, MA
Bib: 37983 M
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 | 39:02 | 12:34 | 3.11 mi | 39:02 | 12:34 | - | |
10K | 1:19:05 | 12:44 | 3.10 mi | 40:03 | 12:53 | +0:19 | |
15K | 2:02:49 | 13:11 | 3.11 mi | 43:44 | 14:05 | +1:12 | |
21K | 2:54:35 | 13:23 | 3.73 mi | 51:46 | 13:53 | -0:12 | |
25K | 3:31:33 | 13:37 | 2.48 mi | 36:58 | 14:52 | +0:59 | |
30K | 4:24:11 | 14:10 | 3.11 mi | 52:38 | 16:56 | +2:04 | |
35K | 5:24:35 | 14:55 | 3.11 mi | 1:00:24 | 19:26 | +2:30 | |
40K | 6:25:27 | 15:30 | 3.10 mi | 1:00:52 | 19:35 | +0:09 | |
Finish(26.22 mi) | 6:51:31 | 15:42 | 1.37 mi | 26:04 | 19:07 | -0:28 |
Checkpoints & Pacing
Pace Line
Fastest Pace
12:34 /mi
Average Pace
15:42 /mi
Slowest Pace
19:35 /mi
Segments
Time at Faster Pace
1:19:05
19% of race
Time at Steady Pace
2:12:28
32% of race
Time at Slower Pace
3:19:58
49% of race
Average Pace: 15:42 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Seg. Dist | Overall | Males | M45-49 | Seg. Overall | Seg. Males | Seg. M45-49 |
|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 26243 | 16135 | 1555 | 29342 | 17454 | 1722 |
| 10K | 3.10 mi | 27711-1468 | 16804-669 | 1632-77 | 28709 | 17220 | 1681 |
| 15K | 3.11 mi | 28584-873 | 17179-375 | 1679-47 | 29342 | 17454 | 1722 |
| 21K | 3.73 mi | 28289+295 | 17020+159 | 1660+19 | 27456 | 16550 | 1611 |
| 25K | 2.48 mi | 28415-126 | 17036-16 | 1667-7 | 28421 | 16833 | 1662 |
| 30K | 3.11 mi | 28802-387 | 17166-130 | 1690-23 | 29312 | 17276 | 1716 |
| 35K | 3.11 mi | 29269-467 | 17354-188 | 1719-29 | 29878 | 17597 | 1747 |
| 40K | 3.10 mi | 29371-102 | 17388-34 | 1722-3 | 29474 | 17354 | 1716 |
| Finish(26.22 mi) | 1.37 mi | 29347+24 | 17369+19 | 1716+6 | 29078 | 17125 | 1691 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
29342
Males
17454
M45-49
17454
5K→10K
3.1 - 6.2 mi
Overall
28709
Males
17220
M45-49
17220
10K→15K
6.2 - 9.3 mi
Overall
29342
Males
17454
M45-49
17454
15K→21K
9.3 - 13.1 mi
Overall
27456
Males
16550
M45-49
16550
21K→25K
13.1 - 15.5 mi
Overall
28421
Males
16833
M45-49
16833
25K→30K
15.5 - 18.6 mi
Overall
29312
Males
17276
M45-49
17276
30K→35K
18.6 - 21.8 mi
Overall
29878
Males
17597
M45-49
17597
35K→40K
21.8 - 24.9 mi
Overall
29474
Males
17354
M45-49
17354
40K→Finish
24.9 - 26.2 mi
Overall
29078
Males
17125
M45-49
17125
Passing Analysis
| Segment | Movement | Rank |
|---|---|---|
| Start → 5K | - | #26243 |
| 5K → 10K | 152355*-1468 | #26243 → #27711 |
| 10K → 15K | 94370*-873 | #27711 → #28584 |
| 15K → 21K | 112407*+295 | #28584 → #28289 |
| 21K → 25K | 250124*-126 | #28289 → #28415 |
| 25K → 30K | 47386*-387 | #28415 → #28802 |
| 30K → 35K | 50235*-467 | #28802 → #29269 |
| 35K → 40K | 15856*-102 | #29269 → #29371 |
| 40K → Finish | 3559*+24 | #29371 → #29347 |
| TOTALS | 3996892*-3104 | #26243 → #29347 |
* 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