Justin Chan

Bib: 12663M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 44%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 48%
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:38
Rank: #10592
Start5K
23:38 | 7:36/mi
10K· 6.21 mi
46:40
Rank: #10130 (+462)
5K10K
23:02 | 7:25/mi
15K· 9.32 mi
1:09:56
Rank: #10092 (+38)
10K15K
23:16 | 7:29/mi
20K· 12.43 mi
1:33:53
Rank: #10304 (-212)
15K20K
23:57 | 7:43/mi
Half· 13.11 mi
1:39:30
Rank: #10634 (-330)
20KHalf
5:37 | 8:14/mi
25K· 15.53 mi
1:58:42
Rank: #10830 (-196)
Half25K
19:12 | 7:55/mi
30K· 18.64 mi
2:25:03
Rank: #11455 (-625)
25K30K
26:21 | 8:29/mi
20M
2:36:18
Rank: #11491 (-36)
30K20M
11:15 | 8:17/mi
21M
2:45:05
Rank: #11520 (-29)
20M21M
8:47 | 8:47/mi
35K· 21.75 mi
2:51:05
Rank: #11538 (-18)
21M35K
6:00 | 8:01/mi
23M
3:01:34
Rank: #11589 (-51)
35K23M
10:29 | 8:22/mi
24M
3:09:44
Rank: #11625 (-36)
23M24M
8:10 | 8:10/mi
40K· 24.85 mi
3:16:48
Rank: #11628 (-3)
24M40K
7:04 | 8:16/mi
25.2M
3:19:54
Rank: #11643 (-15)
40K25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:28:02
Rank: #11625 (+18)
25.2MFinish
8:08 | 7:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:30
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:48:32
Pace8:17 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2723:387:3623:38
7:36
-
10K
6.21 mi11:14:2946:407:3123:02
7:25
-0:11
15K
9.32 mi11:37:451:09:567:3023:16
7:29
+0:04
20K
12.43 mi12:01:421:33:537:3323:57
7:43
+0:14
Half
13.11 mi12:07:191:39:307:355:37
8:14
+0:31
25K
15.53 mi12:26:311:58:427:3819:12
7:55
-0:19
30K
18.64 mi12:52:522:25:037:4726:21
8:29
+0:34
20M
20.00 mi13:04:072:36:187:4911:15
8:17
-0:12
21M
21.00 mi13:12:542:45:057:528:47
8:47
+0:30
35K
21.75 mi13:18:542:51:057:526:00
8:01
-0:46
23M
23.00 mi13:29:233:01:347:5410:29
8:22
+0:21
24M
24.00 mi13:37:333:09:447:548:10
8:10
-0:12
40K
24.85 mi13:44:373:16:487:557:04
8:16
+0:06
25.2M
25.20 mi13:47:433:19:547:563:06
8:59
+0:43
Finish
26.22 mi13:55:513:28:027:568:08
7:59
-1:00

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

7:25 /mi

Average Pace

7:56 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:05

54% of race

Time at Steady Pace

56:43

27% of race

Time at Slower Pace

38:14

18% of race

Average Pace: 7:56 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨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.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:51:2723:387:3623:38
7:36
#10592
10K
6.21 mi11:14:2946:407:3123:02
7:25
#10130
15K
9.32 mi11:37:451:09:567:3023:16
7:29
#10092
20K
12.43 mi12:01:421:33:537:3323:57
7:43
#10304
Half
13.11 mi12:07:191:39:307:355:37
8:14
#10634
25K
15.53 mi12:26:311:58:427:3819:12
7:55
#10830
30K
18.64 mi12:52:522:25:037:4726:21
8:29
#11455
20M
20.00 mi13:04:072:36:187:4911:15
8:17
#11491
21M
21.00 mi13:12:542:45:057:528:47
8:47
#11520
35K
21.75 mi13:18:542:51:057:526:00
8:01
#11538
23M
23.00 mi13:29:233:01:347:5410:29
8:22
#11589
24M
24.00 mi13:37:333:09:447:548:10
8:10
#11625
40K
24.85 mi13:44:373:16:487:557:04
8:16
#11628
25.2M
25.20 mi13:47:433:19:547:563:06
8:59
#11643
Finish
26.22 mi13:55:513:28:027:568:08
7:59
#11625
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi105928450845010083(Top 38%)8192(Top 54%)8192(Top 364%)
10K6.21 mi3.10 mi10130+4628224+2268224+2269750(Top 37%)8032(Top 53%)8032(Top 357%)
15K9.32 mi3.11 mi10092+388221+38221+310083(Top 38%)8192(Top 54%)8192(Top 364%)
20K12.43 mi3.11 mi10304-2128313-928313-9210982(Top 41%)8572(Top 56%)8572(Top 381%)
Half13.11 mi0.68 mi10634-3308476-1638476-16315955(Top 60%)10655(Top 70%)10655(Top 473%)
25K15.53 mi2.42 mi10830-1968548-728548-7212037(Top 45%)8922(Top 59%)8922(Top 396%)
30K18.64 mi3.11 mi11455-6258771-2238771-22314179(Top 53%)9720(Top 64%)9720(Top 432%)
20M20.00 mi1.36 mi11491-368763+88763+812197(Top 46%)8789(Top 58%)8789(Top 390%)
21M21.00 mi1.00 mi11520-298761+28761+212136(Top 46%)8641(Top 57%)8641(Top 384%)
35K21.75 mi0.75 mi11538-188755+68755+612230(Top 46%)8648(Top 57%)8648(Top 384%)
23M23.00 mi1.25 mi11589-518753+28753+212372(Top 46%)8628(Top 57%)8628(Top 383%)
24M24.00 mi1.00 mi11625-368753875312344(Top 46%)8555(Top 56%)8555(Top 380%)
40K24.85 mi0.85 mi11628-38736+178736+1711765(Top 44%)8206(Top 54%)8206(Top 364%)
25.2M25.20 mi0.35 mi11643-158728+88728+812389(Top 47%)8452(Top 56%)8452(Top 375%)
Finish26.22 mi1.02 mi11625+188689+398689+3911963(Top 45%)8261(Top 54%)8261(Top 367%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10083

Males

8192

M45-49

8192

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

9750

Males

8032

M45-49

8032

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10083

Males

8192

M45-49

8192

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

10982

Males

8572

M45-49

8572

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

15955

Males

10655

M45-49

10655

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12037

Males

8922

M45-49

8922

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14179

Males

9720

M45-49

9720

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12197

Males

8789

M45-49

8789

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12136

Males

8641

M45-49

8641

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12230

Males

8648

M45-49

8648

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12372

Males

8628

M45-49

8628

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12344

Males

8555

M45-49

8555

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11765

Males

8206

M45-49

8206

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12389

Males

8452

M45-49

8452

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

11963

Males

8261

M45-49

8261

Passing Analysis

Category:
Athletes Passed
1516*
Passed By
2549
Net Change
-1033
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10592
5K10K588*126+462#10592#10130
10K15K192154+38#10130#10092
15K20K93*305-212#10092#10304
20KHalf0330-330#10304#10634
Half25K72268-196#10634#10830
25K30K56681-625#10830#11455
30K20M80116-36#11455#11491
20M21M77106-29#11491#11520
21M35K4664-18#11520#11538
35K23M78129-51#11538#11589
23M24M5793-36#11589#11625
24M40K5861-3#11625#11628
40K25.2M2742-15#11628#11643
25.2MFinish9274+18#11643#11625
TOTALS1516*2549-1033

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing