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BOSTON MARATHON 2025

Taisuk Kim

Bib: 2606•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 32%
Gender (Male)
#0 / 16105
Top 45%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:07
Rank: #6297
Start → 5K
6:48/mi
21:07 split
10K· 6.21 mi
42:43
Rank: #6970 (-673)
5K → 10K
6:57/mi
21:36 split
15K· 9.32 mi
1:03:47
Rank: #6605 (+365)
10K → 15K
6:47/mi
21:04 split
20K· 12.43 mi
1:25:14
Rank: #6486 (+119)
15K → 20K
6:54/mi
21:27 split
Half· 13.11 mi
1:29:55
Rank: #6492 (-6)
20K → Half
6:52/mi
4:41 split
25K· 15.53 mi
1:47:20
Rank: #6642 (-150)
Half → 25K
7:11/mi
17:25 split
30K· 18.64 mi
2:10:43
Rank: #6751 (-109)
25K → 30K
7:32/mi
23:23 split
20M
2:21:43
Rank: #6974 (-223)
30K → 20M
8:06/mi
11:00 split
21M
2:30:36
Rank: #7205 (-231)
20M → 21M
8:53/mi
8:53 split
35K· 21.75 mi
2:36:50
Rank: #7388 (-183)
21M → 35K
8:20/mi
6:14 split
23M
2:48:24
Rank: #7986 (-598)
35K → 23M
9:14/mi
11:34 split
24M
2:57:18
Rank: #8394 (-408)
23M → 24M
8:54/mi
8:54 split
40K· 24.85 mi
3:05:24
Rank: #8875 (-481)
24M → 40K
9:28/mi
8:06 split
25.2M
3:08:44
Rank: #9006 (-131)
40K → 25.2M
9:40/mi
3:20 split
Finish· 26.22 mi
3:16:58
Rank: #9193 (-187)
25.2M → Finish
8:05/mi
8:14 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:55
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:47:03
Pace8:10 /mi
📊Positive Split: 19.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4321:076:4821:07
6:48
-
10K
6.21 mi10:44:1942:436:5221:36
6:57
+0:09
15K
9.32 mi11:05:231:03:476:5121:04
6:47
-0:10
20K
12.43 mi11:26:501:25:146:5221:27
6:54
+0:07
Half
13.11 mi11:31:311:29:556:524:41
6:52
-0:02
25K
15.53 mi11:48:561:47:206:5517:25
7:11
+0:19
30K
18.64 mi12:12:192:10:437:0123:23
7:32
+0:21
20M
20.00 mi12:23:192:21:437:0511:00
8:06
+0:34
21M
21.00 mi12:32:122:30:367:108:53
8:53
+0:47
35K
21.75 mi12:38:262:36:507:136:14
8:20
-0:33
23M
23.00 mi12:50:002:48:247:1911:34
9:14
+0:54
24M
24.00 mi12:58:542:57:187:238:54
8:54
-0:20
40K
24.85 mi13:07:003:05:247:288:06
9:28
+0:34
25.2M
25.20 mi13:10:203:08:447:293:20
9:40
+0:12
Finish
26.22 mi13:18:343:16:587:318:14
8:05
-1:35

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

6:47 /mi

Average Pace

7:31 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:43

66% of race

Time at Steady Pace

25:28

13% of race

Time at Slower Pace

40:47

21% of race

Average Pace: 7:31 /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 mi10:22:4321:076:4821:07
6:48
#6297
10K
6.21 mi10:44:1942:436:5221:36
6:57
#6970
15K
9.32 mi11:05:231:03:476:5121:04
6:47
#6605
20K
12.43 mi11:26:501:25:146:5221:27
6:54
#6486
Half
13.11 mi11:31:311:29:556:524:41
6:52
#6492
25K
15.53 mi11:48:561:47:206:5517:25
7:11
#6642
30K
18.64 mi12:12:192:10:437:0123:23
7:32
#6751
20M
20.00 mi12:23:192:21:437:0511:00
8:06
#6974
21M
21.00 mi12:32:122:30:367:108:53
8:53
#7205
35K
21.75 mi12:38:262:36:507:136:14
8:20
#7388
23M
23.00 mi12:50:002:48:247:1911:34
9:14
#7986
24M
24.00 mi12:58:542:57:187:238:54
8:54
#8394
40K
24.85 mi13:07:003:05:247:288:06
9:28
#8875
25.2M
25.20 mi13:10:203:08:447:293:20
9:40
#9006
Finish
26.22 mi13:18:343:16:587:318:14
8:05
#9193
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6297575857585916(Top 21%)5390(Top 33%)5390(Top 96%)
10K6.21 mi3.10 mi6970-6736273-5156273-5157621(Top 27%)6728(Top 42%)6728(Top 119%)
15K9.32 mi3.11 mi6605+3655966+3075966+3075916(Top 21%)5390(Top 33%)5390(Top 96%)
20K12.43 mi3.11 mi6486+1195869+975869+976234(Top 22%)5618(Top 35%)5618(Top 100%)
Half13.11 mi0.68 mi6492-6586958696691(Top 24%)5987(Top 37%)5987(Top 106%)
25K15.53 mi2.42 mi6642-1505980-1115980-1117487(Top 26%)6443(Top 40%)6443(Top 114%)
30K18.64 mi3.11 mi6751-1096022-426022-427938(Top 28%)6547(Top 41%)6547(Top 116%)
20M20.00 mi1.36 mi6974-2236156-1346156-13411041(Top 39%)8040(Top 50%)8040(Top 143%)
21M21.00 mi1.00 mi7205-2316291-1356291-13512777(Top 45%)8718(Top 54%)8718(Top 155%)
35K21.75 mi0.75 mi7388-1836390-996390-9914407(Top 51%)9439(Top 59%)9439(Top 167%)
23M23.00 mi1.25 mi7986-5986732-3426732-34217487(Top 62%)10722(Top 67%)10722(Top 190%)
24M24.00 mi1.00 mi8394-4086948-2166948-21616816(Top 59%)10371(Top 64%)10371(Top 184%)
40K24.85 mi0.85 mi8875-4817192-2447192-24418573(Top 65%)11100(Top 69%)11100(Top 197%)
25.2M25.20 mi0.35 mi9006-1317257-657257-6515341(Top 54%)9536(Top 59%)9536(Top 169%)
Finish26.22 mi1.02 mi9193-1877316-597316-5913396(Top 47%)8704(Top 54%)8704(Top 154%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

5916

Males

5390

M18-39

5390

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7621

Males

6728

M18-39

6728

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

5916

Males

5390

M18-39

5390

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

6234

Males

5618

M18-39

5618

20K→Half

12.4 - 13.1 mi

Top 24%
×2story building
+19ft-37ft

Overall

6691

Males

5987

M18-39

5987

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

7487

Males

6443

M18-39

6443

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7938

Males

6547

M18-39

6547

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11041

Males

8040

M18-39

8040

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12777

Males

8718

M18-39

8718

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

14407

Males

9439

M18-39

9439

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

17487

Males

10722

M18-39

10722

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16816

Males

10371

M18-39

10371

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18573

Males

11100

M18-39

11100

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15341

Males

9536

M18-39

9536

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

13396

Males

8704

M18-39

8704

Passing Analysis

Category:
Athletes Passed
1086
Passed By
3982
Net Change
-2896
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6297
5K → 10K48721-673#6297#6970
10K → 15K39227+365#6970#6605
15K → 20K20081+119#6605#6486
20K → Half1925-6#6486#6492
Half → 25K88238-150#6492#6642
25K → 30K139248-109#6642#6751
30K → 20M47270-223#6751#6974
20M → 21M38269-231#6974#7205
21M → 35K15198-183#7205#7388
35K → 23M22620-598#7388#7986
23M → 24M18426-408#7986#8394
24M → 40K16497-481#8394#8875
40K → 25.2M8139-131#8875#9006
25.2M → Finish36223-187#9006#9193
TOTALS10863982-2896
📊

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