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BOSTON MARATHON 2025

Jaeyoon Kim

Bib: 7744•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 42%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 44%
Division (M55-59)
#0 / 1648
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:06
Rank: #11651
Start → 5K
23:06 | 7:26/mi
10K· 6.21 mi
44:38
Rank: #9308 (+2343)
5K → 10K
21:32 | 6:56/mi
15K· 9.32 mi
1:06:12
Rank: #8497 (+811)
10K → 15K
21:34 | 6:56/mi
20K· 12.43 mi
1:28:47
Rank: #8499 (-2)
15K → 20K
22:35 | 7:16/mi
Half· 13.11 mi
1:33:35
Rank: #8441 (+58)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:51:36
Rank: #8548 (-107)
Half → 25K
18:01 | 7:26/mi
30K· 18.64 mi
2:16:57
Rank: #9253 (-705)
25K → 30K
25:21 | 8:10/mi
20M
2:29:53
Rank: #10196 (-943)
30K → 20M
12:56 | 9:31/mi
21M
2:40:33
Rank: #11034 (-838)
20M → 21M
10:40 | 10:40/mi
35K· 21.75 mi
2:47:19
Rank: #11342 (-308)
21M → 35K
6:46 | 9:03/mi
23M
2:58:14
Rank: #11547 (-205)
35K → 23M
10:55 | 8:43/mi
24M
3:06:41
Rank: #11661 (-114)
23M → 24M
8:27 | 8:27/mi
40K· 24.85 mi
3:14:31
Rank: #11910 (-249)
24M → 40K
7:50 | 9:10/mi
25.2M
3:17:44
Rank: #11931 (-21)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:25:45
Rank: #11912 (+19)
25.2M → Finish
8:01 | 7:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:35
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time1:52:10
Pace8:33 /mi
📊Positive Split: 19.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:30:4623:067:2623:06
7:26
-
10K
6.21 mi10:52:1844:387:1121:32
6:56
-0:30
15K
9.32 mi11:13:521:06:127:0621:34
6:56
0:00
20K
12.43 mi11:36:271:28:477:0922:35
7:16
+0:20
Half
13.11 mi11:41:151:33:357:084:48
7:02
-0:14
25K
15.53 mi11:59:161:51:367:1118:01
7:26
+0:24
30K
18.64 mi12:24:372:16:577:2125:21
8:10
+0:44
20M
20.00 mi12:37:332:29:537:3012:56
9:31
+1:21
21M
21.00 mi12:48:132:40:337:3910:40
10:40
+1:09
35K
21.75 mi12:54:592:47:197:426:46
9:03
-1:37
23M
23.00 mi13:05:542:58:147:4510:55
8:43
-0:20
24M
24.00 mi13:14:213:06:417:478:27
8:27
-0:16
40K
24.85 mi13:22:113:14:317:507:50
9:10
+0:43
25.2M
25.20 mi13:25:243:17:447:513:13
9:20
+0:10
Finish
26.22 mi13:33:253:25:457:518:01
7:52
-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

6:56 /mi

Average Pace

7:51 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:36

54% of race

Time at Steady Pace

41:49

20% of race

Time at Slower Pace

52:20

25% of race

Average Pace: 7:51 /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 mi10:30:4623:067:2623:06
7:26
#11651
10K
6.21 mi10:52:1844:387:1121:32
6:56
#9308
15K
9.32 mi11:13:521:06:127:0621:34
6:56
#8497
20K
12.43 mi11:36:271:28:477:0922:35
7:16
#8499
Half
13.11 mi11:41:151:33:357:084:48
7:02
#8441
25K
15.53 mi11:59:161:51:367:1118:01
7:26
#8548
30K
18.64 mi12:24:372:16:577:2125:21
8:10
#9253
20M
20.00 mi12:37:332:29:537:3012:56
9:31
#10196
21M
21.00 mi12:48:132:40:337:3910:40
10:40
#11034
35K
21.75 mi12:54:592:47:197:426:46
9:03
#11342
23M
23.00 mi13:05:542:58:147:4510:55
8:43
#11547
24M
24.00 mi13:14:213:06:417:478:27
8:27
#11661
40K
24.85 mi13:22:113:14:317:507:50
9:10
#11910
25.2M
25.20 mi13:25:243:17:447:513:13
9:20
#11931
Finish
26.22 mi13:33:253:25:457:518:01
7:52
#11912
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi11651901690167254(Top 26%)6442(Top 40%)6442(Top 391%)
10K6.21 mi3.10 mi9308+23437781+12357781+12357483(Top 26%)6630(Top 41%)6630(Top 402%)
15K9.32 mi3.11 mi8497+8117286+4957286+4957254(Top 26%)6442(Top 40%)6442(Top 391%)
20K12.43 mi3.11 mi8499-27260+267260+268788(Top 31%)7336(Top 46%)7336(Top 445%)
Half13.11 mi0.68 mi8441+587221+397221+397848(Top 28%)6810(Top 42%)6810(Top 413%)
25K15.53 mi2.42 mi8548-1077265-447265-449382(Top 33%)7549(Top 47%)7549(Top 458%)
30K18.64 mi3.11 mi9253-7057608-3437608-34312509(Top 44%)8904(Top 55%)8904(Top 540%)
20M20.00 mi1.36 mi10196-9438089-4818089-48119233(Top 68%)11787(Top 73%)11787(Top 715%)
21M21.00 mi1.00 mi11034-8388447-3588447-35820484(Top 72%)12247(Top 76%)12247(Top 743%)
35K21.75 mi0.75 mi11342-3088560-1138560-11318410(Top 65%)11214(Top 70%)11214(Top 680%)
23M23.00 mi1.25 mi11547-2058614-548614-5414636(Top 52%)9453(Top 59%)9453(Top 574%)
24M24.00 mi1.00 mi11661-1148628-148628-1414172(Top 50%)9214(Top 57%)9214(Top 559%)
40K24.85 mi0.85 mi11910-2498713-858713-8517147(Top 60%)10437(Top 65%)10437(Top 633%)
25.2M25.20 mi0.35 mi11931-218712+18712+113540(Top 48%)8710(Top 54%)8710(Top 529%)
Finish26.22 mi1.02 mi11912+198675+378675+3711912(Top 42%)7993(Top 50%)7993(Top 485%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7254

Males

6442

M55-59

6442

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7483

Males

6630

M55-59

6630

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7254

Males

6442

M55-59

6442

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8788

Males

7336

M55-59

7336

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7848

Males

6810

M55-59

6810

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

9382

Males

7549

M55-59

7549

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

12509

Males

8904

M55-59

8904

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19233

Males

11787

M55-59

11787

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

20484

Males

12247

M55-59

12247

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

18410

Males

11214

M55-59

11214

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

14636

Males

9453

M55-59

9453

23M→24M

23.0 - 24.0 mi

Top 50%
×6stories
+12ft-82ft

Overall

14172

Males

9214

M55-59

9214

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17147

Males

10437

M55-59

10437

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13540

Males

8710

M55-59

8710

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11912

Males

7993

M55-59

7993

Passing Analysis

Category:
Athletes Passed
3856*
Passed By
4115
Net Change
-261
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11651
5K → 10K2345*2+2343#11651#9308
10K → 15K8176+811#9308#8497
15K → 20K176178-2#8497#8499
20K → Half657+58#8499#8441
Half → 25K96203-107#8441#8548
25K → 30K77782-705#8548#9253
30K → 20M13954-943#9253#10196
20M → 21M6844-838#10196#11034
21M → 35K10318-308#11034#11342
35K → 23M58263-205#11342#11547
23M → 24M59173-114#11547#11661
24M → 40K30279-249#11661#11910
40K → 25.2M2445-21#11910#11931
25.2M → Finish8061+19#11931#11912
TOTALS3856*4115-261

* 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