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BOSTON MARATHON 2025

Kwang-Jae Yi

Bib: 20636•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 48%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 19%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:26
Rank: #15358
Start → 5K
7:52/mi
24:26 split
10K· 6.21 mi
49:16
Rank: #15927 (-569)
5K → 10K
8:00/mi
24:50 split
15K· 9.32 mi
1:14:27
Rank: #16229 (-302)
10K → 15K
8:06/mi
25:11 split
20K· 12.43 mi
1:39:39
Rank: #16077 (+152)
15K → 20K
8:07/mi
25:12 split
Half· 13.11 mi
1:45:05
Rank: #16056 (+21)
20K → Half
7:58/mi
5:26 split
25K· 15.53 mi
2:04:51
Rank: #15859 (+197)
Half → 25K
8:09/mi
19:46 split
30K· 18.64 mi
2:30:03
Rank: #15127 (+732)
25K → 30K
8:07/mi
25:12 split
20M
2:41:09
Rank: #14802 (+325)
30K → 20M
8:10/mi
11:06 split
21M
2:50:23
Rank: #14766 (+36)
20M → 21M
9:14/mi
9:14 split
35K· 21.75 mi
2:56:06
Rank: #14547 (+219)
21M → 35K
7:38/mi
5:43 split
23M
3:06:05
Rank: #14260 (+287)
35K → 23M
7:58/mi
9:59 split
24M
3:13:57
Rank: #14065 (+195)
23M → 24M
7:52/mi
7:52 split
40K· 24.85 mi
3:20:33
Rank: #13791 (+274)
24M → 40K
7:43/mi
6:36 split
25.2M
3:23:33
Rank: #13718 (+73)
40K → 25.2M
8:42/mi
3:00 split
Finish· 26.22 mi
3:31:08
Rank: #13518 (+200)
25.2M → Finish
7:26/mi
7:35 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:45:05
Pace8:01 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:46:03
Pace8:05 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0724:267:5224:26
7:52
-
10K
6.21 mi11:44:5749:167:5624:50
8:00
+0:08
15K
9.32 mi12:10:081:14:277:5925:11
8:06
+0:06
20K
12.43 mi12:35:201:39:398:0125:12
8:07
+0:01
Half
13.11 mi12:40:461:45:058:015:26
7:58
-0:09
25K
15.53 mi13:00:322:04:518:0219:46
8:09
+0:11
30K
18.64 mi13:25:442:30:038:0325:12
8:07
-0:02
20M
20.00 mi13:36:502:41:098:0311:06
8:10
+0:03
21M
21.00 mi13:46:042:50:238:079:14
9:14
+1:04
35K
21.75 mi13:51:472:56:068:065:43
7:38
-1:36
23M
23.00 mi14:01:463:06:058:059:59
7:58
+0:20
24M
24.00 mi14:09:383:13:578:057:52
7:52
-0:06
40K
24.85 mi14:16:143:20:338:046:36
7:43
-0:09
25.2M
25.20 mi14:19:143:23:338:053:00
8:42
+0:59
Finish
26.22 mi14:26:493:31:088:047:35
7:26
-1:16

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

7:26 /mi

Average Pace

8:04 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

19:54

9% of race

Time at Steady Pace

2:59:00

85% of race

Time at Slower Pace

12:14

6% of race

Average Pace: 8:03 /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 mi11:20:0724:267:5224:26
7:52
#15358
10K
6.21 mi11:44:5749:167:5624:50
8:00
#15927
15K
9.32 mi12:10:081:14:277:5925:11
8:06
#16229
20K
12.43 mi12:35:201:39:398:0125:12
8:07
#16077
Half
13.11 mi12:40:461:45:058:015:26
7:58
#16056
25K
15.53 mi13:00:322:04:518:0219:46
8:09
#15859
30K
18.64 mi13:25:442:30:038:0325:12
8:07
#15127
20M
20.00 mi13:36:502:41:098:0311:06
8:10
#14802
21M
21.00 mi13:46:042:50:238:079:14
9:14
#14766
35K
21.75 mi13:51:472:56:068:065:43
7:38
#14547
23M
23.00 mi14:01:463:06:058:059:59
7:58
#14260
24M
24.00 mi14:09:383:13:578:057:52
7:52
#14065
40K
24.85 mi14:16:143:20:338:046:36
7:43
#13791
25.2M
25.20 mi14:19:143:23:338:053:00
8:42
#13718
Finish
26.22 mi14:26:493:31:088:047:35
7:26
#13518
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15358105561055616756(Top 59%)11116(Top 69%)11116(Top 883%)
10K6.21 mi3.10 mi15927-56910788-23210788-23216409(Top 58%)10985(Top 68%)10985(Top 873%)
15K9.32 mi3.11 mi16229-30210910-12210910-12216756(Top 59%)11116(Top 69%)11116(Top 883%)
20K12.43 mi3.11 mi16077+15210830+8010830+8015696(Top 55%)10613(Top 66%)10613(Top 843%)
Half13.11 mi0.68 mi16056+2110822+810822+815544(Top 55%)10572(Top 66%)10572(Top 840%)
25K15.53 mi2.42 mi15859+19710723+9910723+9914976(Top 53%)10209(Top 63%)10209(Top 811%)
30K18.64 mi3.11 mi15127+73210345+37810345+37812170(Top 43%)8763(Top 54%)8763(Top 696%)
20M20.00 mi1.36 mi14802+32510177+16810177+16811595(Top 41%)8344(Top 52%)8344(Top 663%)
21M21.00 mi1.00 mi14766+3610136+4110136+4114773(Top 52%)9687(Top 60%)9687(Top 769%)
35K21.75 mi0.75 mi14547+21910024+11210024+1129641(Top 34%)7195(Top 45%)7195(Top 571%)
23M23.00 mi1.25 mi14260+2879853+1719853+1719850(Top 35%)7168(Top 45%)7168(Top 569%)
24M24.00 mi1.00 mi14065+1959726+1279726+12710329(Top 36%)7349(Top 46%)7349(Top 584%)
40K24.85 mi0.85 mi13791+2749573+1539573+1538225(Top 29%)6124(Top 38%)6124(Top 486%)
25.2M25.20 mi0.35 mi13718+739535+389535+389992(Top 35%)6968(Top 43%)6968(Top 553%)
Finish26.22 mi1.02 mi13518+2009432+1039432+1038778(Top 31%)6332(Top 39%)6332(Top 503%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16756

Males

11116

M60-64

11116

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16409

Males

10985

M60-64

10985

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16756

Males

11116

M60-64

11116

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15696

Males

10613

M60-64

10613

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

15544

Males

10572

M60-64

10572

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

14976

Males

10209

M60-64

10209

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

12170

Males

8763

M60-64

8763

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

11595

Males

8344

M60-64

8344

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14773

Males

9687

M60-64

9687

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9641

Males

7195

M60-64

7195

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9850

Males

7168

M60-64

7168

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10329

Males

7349

M60-64

7349

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8225

Males

6124

M60-64

6124

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9992

Males

6968

M60-64

6968

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8778

Males

6332

M60-64

6332

Passing Analysis

Category:
Athletes Passed
3327
Passed By
1487
Net Change
+1840
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15358
5K → 10K132701-569#15358#15927
10K → 15K112414-302#15927#16229
15K → 20K283131+152#16229#16077
20K → Half4726+21#16077#16056
Half → 25K26972+197#16056#15859
25K → 30K7397+732#15859#15127
30K → 20M33611+325#15127#14802
20M → 21M13195+36#14802#14766
21M → 35K2234+219#14766#14547
35K → 23M2914+287#14547#14260
23M → 24M20611+195#14260#14065
24M → 40K2751+274#14065#13791
40K → 25.2M774+73#13791#13718
25.2M → Finish2066+200#13718#13518
TOTALS33271487+1840
📊

Passing Visuals

Category:
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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