Jun Dong

Bib: 17487M

CA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M55-59)
#0 / 1491
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
24:53
3.11 mi
Rank: #17008
Start5K
24:53 | 8:01/mi
10K
49:35
6.21 mi
Rank: #16910 (+98)
5K10K
24:42 | 7:58/mi
15K
1:13:58
9.32 mi
Rank: #16579 (+331)
10K15K
24:23 | 7:51/mi
20K
1:39:00
12.43 mi
Rank: #16559 (+20)
15K20K
25:02 | 8:04/mi
HALF
1:44:14
13.11 mi
Rank: #16451 (+108)
20KHALF
5:14 | 7:41/mi
25K
2:03:54
15.53 mi
Rank: #16383 (+68)
HALF25K
19:40 | 8:07/mi
30K
2:30:04
18.64 mi
Rank: #16351 (+32)
25K30K
26:10 | 8:26/mi
20M
2:41:46
20.00 mi
Rank: #16383 (-32)
30K20M
11:42 | 8:37/mi
21M
2:50:45
21.00 mi
Rank: #16325 (+58)
20M21M
8:59 | 8:59/mi
35K
2:56:51
21.75 mi
Rank: #16264 (+61)
21M35K
6:06 | 8:10/mi
23M
3:07:51
23.00 mi
Rank: #16313 (-49)
35K23M
11:00 | 8:48/mi
24M
3:16:26
24.00 mi
Rank: #16351 (-38)
23M24M
8:35 | 8:35/mi
40K
3:23:51
24.85 mi
Rank: #16335 (+16)
24M40K
7:25 | 8:41/mi
25.2M
3:27:05
25.20 mi
Rank: #16336 (-1)
40K25.2M
3:14 | 9:23/mi
FINISH
3:35:46
26.22 mi
Rank: #16418 (-82)
25.2MFINISH
8:41 | 8:32/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:44:14
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:51:32
Pace8:31 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:5124:538:0124:53
8:01
-
10K
6.21 mi11:51:3349:357:5924:42
7:58
-0:03
15K
9.32 mi12:15:561:13:587:5724:23
7:51
-0:07
20K
12.43 mi12:40:581:39:007:5825:02
8:04
+0:13
HALF
13.11 mi12:46:121:44:147:585:14
7:41
-0:23
25K
15.53 mi13:05:522:03:547:5919:40
8:07
+0:26
30K
18.64 mi13:32:022:30:048:0426:10
8:26
+0:19
20M
20.00 mi13:43:442:41:468:0611:42
8:37
+0:11
21M
21.00 mi13:52:432:50:458:088:59
8:59
+0:22
35K
21.75 mi13:58:492:56:518:086:06
8:10
-0:49
23M
23.00 mi14:09:493:07:518:1111:00
8:48
+0:38
24M
24.00 mi14:18:243:16:268:128:35
8:35
-0:13
40K
24.85 mi14:25:493:23:518:137:25
8:41
+0:06
25.2M
25.20 mi14:29:033:27:058:143:14
9:23
+0:42
FINISH
26.22 mi14:37:443:35:468:158:41
8:32
-0:51

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

7:41 /mi

Average Pace

8:14 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

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

2:10:00

60% of race

Time at Steady Pace

55:08

26% of race

Time at Slower Pace

30:38

14% of race

Average Pace: 8:14 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:26:5124:538:0124:53
8:01
#17008
10K
6.21 mi11:51:3349:357:5924:42
7:58
#16910
15K
9.32 mi12:15:561:13:587:5724:23
7:51
#16579
20K
12.43 mi12:40:581:39:007:5825:02
8:04
#16559
HALF
13.11 mi12:46:121:44:147:585:14
7:41
#16451
25K
15.53 mi13:05:522:03:547:5919:40
8:07
#16383
30K
18.64 mi13:32:022:30:048:0426:10
8:26
#16351
20M
20.00 mi13:43:442:41:468:0611:42
8:37
#16383
21M
21.00 mi13:52:432:50:458:088:59
8:59
#16325
35K
21.75 mi13:58:492:56:518:086:06
8:10
#16264
23M
23.00 mi14:09:493:07:518:1111:00
8:48
#16313
24M
24.00 mi14:18:243:16:268:128:35
8:35
#16351
40K
24.85 mi14:25:493:23:518:137:25
8:41
#16335
25.2M
25.20 mi14:29:033:27:058:143:14
9:23
#16336
FINISH
26.22 mi14:37:443:35:468:158:41
8:32
#16418
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi17008110081100815740(Top 54%)10484(Top 64%)10484(Top 703%)
10K6.21 mi3.10 mi16910+9810956+5210956+5216848(Top 58%)10951(Top 67%)10951(Top 734%)
15K9.32 mi3.11 mi16579+33110834+12210834+12215740(Top 54%)10484(Top 64%)10484(Top 703%)
20K12.43 mi3.11 mi16559+2010814+2010814+2016538(Top 57%)10799(Top 66%)10799(Top 724%)
HALF13.11 mi0.68 mi16451+10810764+5010764+5014527(Top 50%)10036(Top 61%)10036(Top 673%)
25K15.53 mi2.42 mi16383+6810729+3510729+3516183(Top 56%)10593(Top 65%)10593(Top 710%)
30K18.64 mi3.11 mi16351+3210668+6110668+6116389(Top 56%)10581(Top 65%)10581(Top 710%)
20M20.00 mi1.36 mi16383-3210673-510673-516844(Top 58%)10665(Top 65%)10665(Top 715%)
21M21.00 mi1.00 mi16325+5810633+4010633+4016018(Top 55%)10264(Top 63%)10264(Top 688%)
35K21.75 mi0.75 mi16264+6110586+4710586+4715474(Top 53%)9967(Top 61%)9967(Top 668%)
23M23.00 mi1.25 mi16313-4910598-1210598-1217377(Top 60%)10691(Top 65%)10691(Top 717%)
24M24.00 mi1.00 mi16351-3810588+1010588+1017350(Top 60%)10630(Top 65%)10630(Top 713%)
40K24.85 mi0.85 mi16335+1610562+2610562+2616694(Top 58%)10279(Top 63%)10279(Top 689%)
25.2M25.20 mi0.35 mi16336-110553+910553+916672(Top 57%)10280(Top 63%)10280(Top 689%)
FINISH26.22 mi1.02 mi16418-8210565-1210565-1218250(Top 63%)11006(Top 67%)11006(Top 738%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21
+97ft-345ft

Overall

15740

Males

10484

M55-59

10484

5K→10K

3.1 - 6.2 mi

Top 58%
×5
+79ft-138ft

Overall

16848

Males

10951

M55-59

10951

10K→15K

6.2 - 9.3 mi

Top 54%
×3
+67ft-78ft

Overall

15740

Males

10484

M55-59

10484

15K→20K

9.3 - 12.4 mi

Top 57%
×5
+106ft-86ft

Overall

16538

Males

10799

M55-59

10799

20K→HALF

12.4 - 13.1 mi

Top 50%
×2
+19ft-37ft

Overall

14527

Males

10036

M55-59

10036

HALF→25K

13.1 - 15.5 mi

Top 56%
×4
+66ft-88ft

Overall

16183

Males

10593

M55-59

10593

25K→30K

15.5 - 18.6 mi

Top 56%
×9
+181ft-148ft

Overall

16389

Males

10581

M55-59

10581

30K→20M

18.6 - 20.0 mi

Top 58%
×5
+64ft-50ft

Overall

16844

Males

10665

M55-59

10665

20M→21M

20.0 - 21.0 mi

Top 55%
×8
+106ft-24ft

Overall

16018

Males

10264

M55-59

10264

21M→35K

21.0 - 21.8 mi

Top 53%
×7
+17ft-86ft

Overall

15474

Males

9967

M55-59

9967

35K→23M

21.8 - 23.0 mi

Top 60%
×5
+23ft-63ft

Overall

17377

Males

10691

M55-59

10691

23M→24M

23.0 - 24.0 mi

Top 60%
×6
+12ft-82ft

Overall

17350

Males

10630

M55-59

10630

24M→40K

24.0 - 24.9 mi

Top 58%
×1
+6ft-20ft

Overall

16694

Males

10279

M55-59

10279

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1
+13ft-16ft

Overall

16672

Males

10280

M55-59

10280

25.2M→FINISH

25.2 - 26.2 mi

Top 63%
×2
+22ft-21ft

Overall

18250

Males

11006

M55-59

11006

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1984
Passed By
1394
Net Change
+590
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17008
5K10K344246+98#17008#16910
10K15K39564+331#16910#16579
15K20K189169+20#16579#16559
20KHALF1124+108#16559#16451
HALF25K171103+68#16451#16383
25K30K209177+32#16383#16351
30K20M72104-32#16351#16383
20M21M12466+58#16383#16325
21M35K8827+61#16325#16264
35K23M77126-49#16264#16313
23M24M5694-38#16313#16351
24M40K8064+16#16351#16335
40K25.2M2728-1#16335#16336
25.2MFINISH40122-82#16336#16418
TOTALS19841394+590
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing