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BOSTON MARATHON 2023

Hong Hai Sun

Bib: 18883•M

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:14
Rank: #19259
Start → 5K
27:14 | 8:46/mi
10K· 6.21 mi
53:45
Rank: #18796 (+463)
5K → 10K
26:31 | 8:32/mi
15K· 9.32 mi
1:20:27
Rank: #18643 (+153)
10K → 15K
26:42 | 8:36/mi
20K· 12.43 mi
1:48:01
Rank: #18742 (-99)
15K → 20K
27:34 | 8:52/mi
Half· 13.11 mi
1:53:55
Rank: #18740 (+2)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:15:05
Rank: #18543 (+197)
Half → 25K
21:10 | 8:44/mi
30K· 18.64 mi
2:43:26
Rank: #18378 (+165)
25K → 30K
28:21 | 9:07/mi
20M
2:56:01
Rank: #18339 (+39)
30K → 20M
12:35 | 9:16/mi
21M
3:05:53
Rank: #18289 (+50)
20M → 21M
9:52 | 9:52/mi
35K· 21.75 mi
3:12:54
Rank: #18334 (-45)
21M → 35K
7:01 | 9:23/mi
23M
3:24:49
Rank: #18331 (+3)
35K → 23M
11:55 | 9:31/mi
24M
3:34:37
Rank: #18463 (-132)
23M → 24M
9:48 | 9:48/mi
40K· 24.85 mi
3:43:18
Rank: #18569 (-106)
24M → 40K
8:41 | 10:09/mi
25.2M
3:47:13
Rank: #18657 (-88)
40K → 25.2M
3:55 | 11:21/mi
Finish· 26.22 mi
3:57:44
Rank: #18892 (-235)
25.2M → Finish
10:31 | 10:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:55
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:03:49
Pace9:27 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4927:148:4627:14
8:46
-
10K
6.21 mi11:48:2053:458:3926:31
8:32
-0:14
15K
9.32 mi12:15:021:20:278:3826:42
8:36
+0:04
20K
12.43 mi12:42:361:48:018:4227:34
8:52
+0:16
Half
13.11 mi12:48:301:53:558:415:54
8:39
-0:13
25K
15.53 mi13:09:402:15:058:4221:10
8:44
+0:05
30K
18.64 mi13:38:012:43:268:4628:21
9:07
+0:23
20M
20.00 mi13:50:362:56:018:4812:35
9:16
+0:09
21M
21.00 mi14:00:283:05:538:519:52
9:52
+0:36
35K
21.75 mi14:07:293:12:548:527:01
9:23
-0:29
23M
23.00 mi14:19:243:24:498:5411:55
9:31
+0:08
24M
24.00 mi14:29:123:34:378:579:48
9:48
+0:17
40K
24.85 mi14:37:533:43:188:598:41
10:09
+0:21
25.2M
25.20 mi14:41:483:47:139:013:55
11:21
+1:12
Finish
26.22 mi14:52:193:57:449:0410:31
10:19
-1:02

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

8:32 /mi

Average Pace

9:04 /mi

Slowest Pace

11:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:05

57% of race

Time at Steady Pace

59:52

25% of race

Time at Slower Pace

42:47

18% of race

Average Pace: 9:04 /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 mi11:21:4927:148:4627:14
8:46
#19259
10K
6.21 mi11:48:2053:458:3926:31
8:32
#18796
15K
9.32 mi12:15:021:20:278:3826:42
8:36
#18643
20K
12.43 mi12:42:361:48:018:4227:34
8:52
#18742
Half
13.11 mi12:48:301:53:558:415:54
8:39
#18740
25K
15.53 mi13:09:402:15:058:4221:10
8:44
#18543
30K
18.64 mi13:38:012:43:268:4628:21
9:07
#18378
20M
20.00 mi13:50:362:56:018:4812:35
9:16
#18339
21M
21.00 mi14:00:283:05:538:519:52
9:52
#18289
35K
21.75 mi14:07:293:12:548:527:01
9:23
#18334
23M
23.00 mi14:19:243:24:498:5411:55
9:31
#18331
24M
24.00 mi14:29:123:34:378:579:48
9:48
#18463
40K
24.85 mi14:37:533:43:188:598:41
10:09
#18569
25.2M
25.20 mi14:41:483:47:139:013:55
11:21
#18657
Finish
26.22 mi14:52:193:57:449:0410:31
10:19
#18892
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19259118741187418393(Top 69%)11643(Top 77%)11643(Top 819%)
10K6.21 mi3.10 mi18796+46311767+10711767+10718454(Top 69%)11695(Top 77%)11695(Top 822%)
15K9.32 mi3.11 mi18643+15311714+5311714+5318393(Top 69%)11643(Top 77%)11643(Top 819%)
20K12.43 mi3.11 mi18742-9911762-4811762-4819072(Top 72%)11921(Top 79%)11921(Top 838%)
Half13.11 mi0.68 mi18740+211761+111761+118578(Top 70%)11739(Top 77%)11739(Top 826%)
25K15.53 mi2.42 mi18543+19711667+9411667+9417534(Top 66%)11216(Top 74%)11216(Top 789%)
30K18.64 mi3.11 mi18378+16511569+9811569+9817813(Top 67%)11260(Top 74%)11260(Top 792%)
20M20.00 mi1.36 mi18339+3911538+3111538+3117836(Top 67%)11162(Top 74%)11162(Top 785%)
21M21.00 mi1.00 mi18289+5011500+3811500+3817500(Top 66%)11001(Top 72%)11001(Top 774%)
35K21.75 mi0.75 mi18334-4511518-1811518-1819422(Top 73%)11781(Top 78%)11781(Top 828%)
23M23.00 mi1.25 mi18331+311502+1611502+1618389(Top 69%)11302(Top 74%)11302(Top 795%)
24M24.00 mi1.00 mi18463-13211557-5511557-5520204(Top 76%)12089(Top 80%)12089(Top 850%)
40K24.85 mi0.85 mi18569-10611588-3111588-3120371(Top 77%)12084(Top 80%)12084(Top 850%)
25.2M25.20 mi0.35 mi18657-8811613-2511613-2521211(Top 80%)12477(Top 82%)12477(Top 877%)
Finish26.22 mi1.02 mi18892-23511725-11211725-11222586(Top 85%)13125(Top 86%)13125(Top 923%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18393

Males

11643

M55-59

11643

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

18454

Males

11695

M55-59

11695

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18393

Males

11643

M55-59

11643

15K→20K

9.3 - 12.4 mi

Top 72%
×5stories
+106ft-86ft

Overall

19072

Males

11921

M55-59

11921

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

18578

Males

11739

M55-59

11739

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

17534

Males

11216

M55-59

11216

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

17813

Males

11260

M55-59

11260

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

17836

Males

11162

M55-59

11162

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

17500

Males

11001

M55-59

11001

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

19422

Males

11781

M55-59

11781

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18389

Males

11302

M55-59

11302

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

20204

Males

12089

M55-59

12089

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20371

Males

12084

M55-59

12084

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21211

Males

12477

M55-59

12477

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22586

Males

13125

M55-59

13125

Passing Analysis

Category:
Athletes Passed
1945
Passed By
1578
Net Change
+367
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19259
5K → 10K647184+463#19259#18796
10K → 15K268115+153#18796#18643
15K → 20K131230-99#18643#18742
20K → Half2624+2#18742#18740
Half → 25K22831+197#18740#18543
25K → 30K25186+165#18543#18378
30K → 20M10970+39#18378#18339
20M → 21M11363+50#18339#18289
21M → 35K2772-45#18289#18334
35K → 23M8582+3#18334#18331
23M → 24M18150-132#18331#18463
24M → 40K30136-106#18463#18569
40K → 25.2M997-88#18569#18657
25.2M → Finish3238-235#18657#18892
TOTALS19451578+367
📊

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