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BOSTON MARATHON 2025

Jong Kim

CA

Bib: 21318 M

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

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:29/mi
26:21
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:39/mi
53:13
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:11/mi
1:21:46
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:14/mi
1:50:27
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:20/mi
1:56:49
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
10:16/mi
2:21:42
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:59/mi
2:55:48
↑ 181↓ 1480.2%
138 ft elev
20M
12:20/mi
3:12:33
↑ 64↓ 500.2%
148 ft elev
21M
13:40/mi
3:26:13
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:40/mi
3:34:12
↑ 17↓ 861.7%
156 ft elev
23M
10:34/mi
3:47:26
↑ 23↓ 630.6%
116 ft elev
24M
10:06/mi
3:57:32
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:36/mi
4:06:36
↓ 200.3%
20 ft elev
25.2M
11:42/mi
4:10:38
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:05/mi
4:20:55
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:56:498:55 /mi⚡ faster
2nd Half
2:24:0611:00 /mi+23.4%
Positive split — 23.4% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4426:218:2926:21
8:29
-
10K
6.21 mi11:46:3653:138:3426:52
8:39
+0:10
15K
9.32 mi12:15:091:21:468:4628:33
9:11
+0:32
20K
12.43 mi12:43:501:50:278:5328:41
9:14
+0:03
Half
13.11 mi12:50:121:56:498:556:22
9:20
+0:06
25K
15.53 mi13:15:052:21:429:0724:53
10:16
+0:56
30K
18.64 mi13:49:112:55:489:2634:06
10:59
+0:43
20M
20.00 mi14:05:563:12:339:3816:45
12:20
+1:21
21M
21.00 mi14:19:363:26:139:4913:40
13:40
+1:20
35K
21.75 mi14:27:353:34:129:517:59
10:40
-3:00
23M
23.00 mi14:40:493:47:269:5313:14
10:34
-0:06
24M
24.00 mi14:50:553:57:329:5410:06
10:06
-0:28
40K
24.85 mi14:59:594:06:369:559:04
10:36
+0:30
25.2M
25.20 mi15:04:014:10:389:574:02
11:42
+1:06
Finish
26.22 mi15:14:184:20:559:5810:17
10:05
-1:37

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

8:29 /mi

Average Pace

9:58 /mi

Slowest Pace

13:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:49

45% of race

Time at Steady Pace

1:15:33

29% of race

Time at Slower Pace

1:08:33

26% of race

Average Pace: 9:57 /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 mi11:19:4426:218:2926:21
8:29
#19783
10K
6.21 mi11:46:3653:138:3426:52
8:39
#20214
15K
9.32 mi12:15:091:21:468:4628:33
9:11
#21105
20K
12.43 mi12:43:501:50:278:5328:41
9:14
#21379
Half
13.11 mi12:50:121:56:498:556:22
9:20
#21486
25K
15.53 mi13:15:052:21:429:0724:53
10:16
#22113
30K
18.64 mi13:49:112:55:489:2634:06
10:59
#22606
20M
20.00 mi14:05:563:12:339:3816:45
12:20
#22928
21M
21.00 mi14:19:363:26:139:4913:40
13:40
#23204
35K
21.75 mi14:27:353:34:129:517:59
10:40
#23215
23M
23.00 mi14:40:493:47:269:5313:14
10:34
#23164
24M
24.00 mi14:50:553:57:329:5410:06
10:06
#23091
40K
24.85 mi14:59:594:06:369:559:04
10:36
#23045
25.2M
25.20 mi15:04:014:10:389:574:02
11:42
#23053
Finish
26.22 mi15:14:184:20:559:5810:17
10:05
#23053
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi197831234512345228281375813758
10K6.21 mi3.10 mi20214-43112557-21212557-212205841273512735
15K9.32 mi3.11 mi21105-89112953-39612953-396228281375813758
20K12.43 mi3.11 mi21379-27413073-12013073-120220101336613366
Half13.11 mi0.68 mi21486-10713122-4913122-49230481381113811
25K15.53 mi2.42 mi22113-62713393-27113393-271238611413114131
30K18.64 mi3.11 mi22606-49313572-17913572-179239621405514055
20M20.00 mi1.36 mi22928-32213698-12613698-126257111479014790
21M21.00 mi1.00 mi23204-27613806-10813806-108258391480914809
35K21.75 mi0.75 mi23215-1113802+413802+4235101363813638
23M23.00 mi1.25 mi23164+5113745+5713745+57221811296912969
24M24.00 mi1.00 mi23091+7313691+5413691+54216401265512655
40K24.85 mi0.85 mi23045+4613655+3613655+36221941283512835
25.2M25.20 mi0.35 mi23053-81365513655225391305413054
Finish26.22 mi1.02 mi2305313645+1013645+10231911337013370

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

22828

Males

13758

M60-64

13758

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20584

Males

12735

M60-64

12735

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

22828

Males

13758

M60-64

13758

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

22010

Males

13366

M60-64

13366

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

23048

Males

13811

M60-64

13811

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23861

Males

14131

M60-64

14131

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

23962

Males

14055

M60-64

14055

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

25711

Males

14790

M60-64

14790

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

25839

Males

14809

M60-64

14809

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23510

Males

13638

M60-64

13638

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

22181

Males

12969

M60-64

12969

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21640

Males

12655

M60-64

12655

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22194

Males

12835

M60-64

12835

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

22539

Males

13054

M60-64

13054

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

23191

Males

13370

M60-64

13370

Passing Analysis

Category:
Athletes Passed
772
Passed By
4042
Net Change
-3270
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19783
5K → 10K115546-431#19783#20214
10K → 15K38929-891#20214#21105
15K → 20K130404-274#21105#21379
20K → Half7114-107#21379#21486
Half → 25K32659-627#21486#22113
25K → 30K72565-493#22113#22606
30K → 20M22344-322#22606#22928
20M → 21M19295-276#22928#23204
21M → 35K3344-11#23204#23215
35K → 23M10049+51#23215#23164
23M → 24M8613+73#23164#23091
24M → 40K7125+46#23091#23045
40K → 25.2M1422-8#23045#23053
25.2M → Finish33330#23053#23053
TOTALS7724042-3270

Passing Charts

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