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BOSTON MARATHON 2025

Hee Sung Shin

Bib: 23950•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:58
Rank: #16861
Start → 5K
24:58 | 8:02/mi
10K· 6.21 mi
49:41
Rank: #16474 (+387)
5K → 10K
24:43 | 7:57/mi
15K· 9.32 mi
1:14:39
Rank: #16403 (+71)
10K → 15K
24:58 | 8:02/mi
20K· 12.43 mi
1:40:11
Rank: #16394 (+9)
15K → 20K
25:32 | 8:13/mi
Half· 13.11 mi
1:45:46
Rank: #16439 (-45)
20K → Half
5:35 | 8:11/mi
25K· 15.53 mi
2:06:20
Rank: #16523 (-84)
Half → 25K
20:34 | 8:29/mi
30K· 18.64 mi
2:34:09
Rank: #16655 (-132)
25K → 30K
27:49 | 8:57/mi
20M
2:46:26
Rank: #16644 (+11)
30K → 20M
12:17 | 9:02/mi
21M
2:56:10
Rank: #16637 (+7)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
3:02:46
Rank: #16639 (-2)
21M → 35K
6:36 | 8:49/mi
23M
3:14:17
Rank: #16659 (-20)
35K → 23M
11:31 | 9:12/mi
24M
3:23:33
Rank: #16772 (-113)
23M → 24M
9:16 | 9:16/mi
40K· 24.85 mi
3:31:35
Rank: #16825 (-53)
24M → 40K
8:02 | 9:24/mi
25.2M
3:35:07
Rank: #16842 (-17)
40K → 25.2M
3:32 | 10:15/mi
Finish· 26.22 mi
3:44:04
Rank: #16917 (-75)
25.2M → Finish
8:57 | 8:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:46
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:58:18
Pace9:01 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:4124:588:0224:58
8:02
-
10K
6.21 mi11:47:2449:418:0024:43
7:57
-0:05
15K
9.32 mi12:12:221:14:398:0124:58
8:02
+0:05
20K
12.43 mi12:37:541:40:118:0425:32
8:13
+0:11
Half
13.11 mi12:43:291:45:468:045:35
8:11
-0:02
25K
15.53 mi13:04:032:06:208:0820:34
8:29
+0:18
30K
18.64 mi13:31:522:34:098:1627:49
8:57
+0:28
20M
20.00 mi13:44:092:46:268:1912:17
9:02
+0:05
21M
21.00 mi13:53:532:56:108:239:44
9:44
+0:42
35K
21.75 mi14:00:293:02:468:246:36
8:49
-0:55
23M
23.00 mi14:12:003:14:178:2711:31
9:12
+0:23
24M
24.00 mi14:21:163:23:338:299:16
9:16
+0:04
40K
24.85 mi14:29:183:31:358:318:02
9:24
+0:08
25.2M
25.20 mi14:32:503:35:078:323:32
10:15
+0:51
Finish
26.22 mi14:41:473:44:048:338:57
8:47
-1:28

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

7:57 /mi

Average Pace

8:33 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:20

56% of race

Time at Steady Pace

55:39

25% of race

Time at Slower Pace

42:05

19% of race

Average Pace: 8:33 /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 mi11:22:4124:588:0224:58
8:02
#16861
10K
6.21 mi11:47:2449:418:0024:43
7:57
#16474
15K
9.32 mi12:12:221:14:398:0124:58
8:02
#16403
20K
12.43 mi12:37:541:40:118:0425:32
8:13
#16394
Half
13.11 mi12:43:291:45:468:045:35
8:11
#16439
25K
15.53 mi13:04:032:06:208:0820:34
8:29
#16523
30K
18.64 mi13:31:522:34:098:1627:49
8:57
#16655
20M
20.00 mi13:44:092:46:268:1912:17
9:02
#16644
21M
21.00 mi13:53:532:56:108:239:44
9:44
#16637
35K
21.75 mi14:00:293:02:468:246:36
8:49
#16639
23M
23.00 mi14:12:003:14:178:2711:31
9:12
#16659
24M
24.00 mi14:21:163:23:338:299:16
9:16
#16772
40K
24.85 mi14:29:183:31:358:318:02
9:24
#16825
25.2M
25.20 mi14:32:503:35:078:323:32
10:15
#16842
Finish
26.22 mi14:41:473:44:048:338:57
8:47
#16917
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi16861111481114816314(Top 57%)10944(Top 68%)10944(Top 1713%)
10K6.21 mi3.10 mi16474+38711002+14611002+14616105(Top 57%)10877(Top 68%)10877(Top 1702%)
15K9.32 mi3.11 mi16403+7110978+2410978+2416314(Top 57%)10944(Top 68%)10944(Top 1713%)
20K12.43 mi3.11 mi16394+910971+710971+716418(Top 58%)10928(Top 68%)10928(Top 1710%)
Half13.11 mi0.68 mi16439-4510993-2210993-2217138(Top 60%)11239(Top 70%)11239(Top 1759%)
25K15.53 mi2.42 mi16523-8411002-911002-917066(Top 60%)11128(Top 69%)11128(Top 1741%)
30K18.64 mi3.11 mi16655-13210993+910993+917429(Top 61%)11118(Top 69%)11118(Top 1740%)
20M20.00 mi1.36 mi16644+1110964+2910964+2916991(Top 60%)10817(Top 67%)10817(Top 1693%)
21M21.00 mi1.00 mi16637+710929+3510929+3517172(Top 60%)10768(Top 67%)10768(Top 1685%)
35K21.75 mi0.75 mi16639-210906+2310906+2317335(Top 61%)10739(Top 67%)10739(Top 1681%)
23M23.00 mi1.25 mi16659-2010883+2310883+2317304(Top 61%)10650(Top 66%)10650(Top 1667%)
24M24.00 mi1.00 mi16772-11310902-1910902-1918638(Top 66%)11228(Top 70%)11228(Top 1757%)
40K24.85 mi0.85 mi16825-5310892+1010892+1018243(Top 64%)10949(Top 68%)10949(Top 1713%)
25.2M25.20 mi0.35 mi16842-1710881+1110881+1118025(Top 63%)10825(Top 67%)10825(Top 1694%)
Finish26.22 mi1.02 mi16917-7510901-2010901-2017935(Top 63%)10846(Top 67%)10846(Top 1697%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

16314

Males

10944

M65-69

10944

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

16105

Males

10877

M65-69

10877

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

16314

Males

10944

M65-69

10944

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16418

Males

10928

M65-69

10928

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

17138

Males

11239

M65-69

11239

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

17066

Males

11128

M65-69

11128

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

17429

Males

11118

M65-69

11118

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

16991

Males

10817

M65-69

10817

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

17172

Males

10768

M65-69

10768

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17335

Males

10739

M65-69

10739

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

17304

Males

10650

M65-69

10650

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18638

Males

11228

M65-69

11228

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18243

Males

10949

M65-69

10949

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

18025

Males

10825

M65-69

10825

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

17935

Males

10846

M65-69

10846

Passing Analysis

Category:
Athletes Passed
1887
Passed By
1943
Net Change
-56
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16861
5K → 10K529142+387#16861#16474
10K → 15K240169+71#16474#16403
15K → 20K222213+9#16403#16394
20K → Half2065-45#16394#16439
Half → 25K127211-84#16439#16523
25K → 30K174306-132#16523#16655
30K → 20M113102+11#16655#16644
20M → 21M10699+7#16644#16637
21M → 35K6365-2#16637#16639
35K → 23M107127-20#16639#16659
23M → 24M48161-113#16659#16772
24M → 40K61114-53#16772#16825
40K → 25.2M3249-17#16825#16842
25.2M → Finish45120-75#16842#16917
TOTALS18871943-56
📊

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