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BOSTON MARATHON 2025

Jun Young Kim

Bib: 30373•M

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:51/mi
33:43
↑ 97↓ 3451.5%
10K· 6.21 mi
11:09/mi
1:08:22
↑ 79↓ 1380.4%
15K· 9.32 mi
10:52/mi
1:42:08
↑ 67↓ 78
20K· 12.43 mi
11:37/mi
2:18:12
↑ 106↓ 860.1%
Half· 13.11 mi
11:04/mi
2:25:45
↑ 19↓ 370.5%
25K· 15.53 mi
12:18/mi
2:55:34
↑ 66↓ 880.2%
30K· 18.64 mi
16:35/mi
3:47:04
↑ 181↓ 1480.2%
20M
18:42/mi
4:12:29
↑ 64↓ 500.2%
21M
17:30/mi
4:29:59
↑ 106↓ 241.6%
35K· 21.75 mi
15:45/mi
4:41:46
↑ 17↓ 861.7%
23M
13:46/mi
4:59:00
↑ 23↓ 630.6%
24M
12:22/mi
5:11:22
↓ 821.3%
40K· 24.85 mi
15:12/mi
5:24:22
↓ 200.3%
25.2M
13:49/mi
5:29:08
↑ 13↓ 160.2%
Finish· 26.22 mi
14:41/mi
5:44:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:25:45
Pace11:07 /mi
2nd Half
Distance13.11 mi
Time3:18:21
Pace15:08 /mi
📊Positive Split: 36.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:1433:4310:5133:43
10:51
-
10K
6.21 mi12:27:531:08:2211:0034:39
11:09
+0:18
15K
9.32 mi13:01:391:42:0810:5733:46
10:52
-0:17
20K
12.43 mi13:37:432:18:1211:0736:04
11:37
+0:45
Half
13.11 mi13:45:162:25:4511:077:33
11:04
-0:33
25K
15.53 mi14:15:052:55:3411:1829:49
12:18
+1:14
30K
18.64 mi15:06:353:47:0412:1151:30
16:35
+4:17
20M
20.00 mi15:32:004:12:2912:3725:25
18:42
+2:07
21M
21.00 mi15:49:304:29:5912:5117:30
17:30
-1:12
35K
21.75 mi16:01:174:41:4612:5711:47
15:45
-1:45
23M
23.00 mi16:18:314:59:0013:0017:14
13:46
-1:59
24M
24.00 mi16:30:535:11:2212:5812:22
12:22
-1:24
40K
24.85 mi16:43:535:24:2213:0313:00
15:12
+2:50
25.2M
25.20 mi16:48:395:29:0813:044:46
13:49
-1:23
Finish
26.22 mi17:03:375:44:0613:0814:58
14:41
+0:52

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

10:51 /mi

Average Pace

13:08 /mi

Slowest Pace

18:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:07:56

55% of race

Time at Steady Pace

36:58

11% of race

Time at Slower Pace

1:59:12

35% of race

Average Pace: 13:07 /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 mi11:53:1433:4310:5133:43
10:51
#27376
10K
6.21 mi12:27:531:08:2211:0034:39
11:09
#27316
15K
9.32 mi13:01:391:42:0810:5733:46
10:52
#27014
20K
12.43 mi13:37:432:18:1211:0736:04
11:37
#26951
Half
13.11 mi13:45:162:25:4511:077:33
11:04
#26922
25K
15.53 mi14:15:052:55:3411:1829:49
12:18
#26915
30K
18.64 mi15:06:353:47:0412:1151:30
16:35
#27470
20M
20.00 mi15:32:004:12:2912:3725:25
18:42
#27717
21M
21.00 mi15:49:304:29:5912:5117:30
17:30
#27798
35K
21.75 mi16:01:174:41:4612:5711:47
15:45
#27856
23M
23.00 mi16:18:314:59:0013:0017:14
13:46
#27830
24M
24.00 mi16:30:535:11:2212:5812:22
12:22
#27786
40K
24.85 mi16:43:535:24:2213:0313:00
15:12
#27802
25.2M
25.20 mi16:48:395:29:0813:044:46
13:49
#27786
Finish
26.22 mi17:03:375:44:0613:0814:58
14:41
#27848
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi27376157501575026513(Top 93%)15371(Top 95%)15371(Top 933%)
10K6.21 mi3.10 mi27316+6015708+4215708+4227247(Top 96%)15668(Top 97%)15668(Top 951%)
15K9.32 mi3.11 mi27014+30215582+12615582+12626513(Top 93%)15371(Top 95%)15371(Top 933%)
20K12.43 mi3.11 mi26951+6315546+3615546+3626755(Top 94%)15441(Top 96%)15441(Top 937%)
Half13.11 mi0.68 mi26922+2915528+1815528+1826601(Top 94%)15361(Top 95%)15361(Top 932%)
25K15.53 mi2.42 mi26915+715519+915519+926750(Top 94%)15401(Top 96%)15401(Top 935%)
30K18.64 mi3.11 mi27470-55515718-19915718-19928323(Top 100%)16056(Top 100%)16056(Top 974%)
20M20.00 mi1.36 mi27717-24715816-9815816-9828365(Top 100%)16077(Top 100%)16077(Top 976%)
21M21.00 mi1.00 mi27798-8115850-3415850-3428230(Top 99%)16002(Top 99%)16002(Top 971%)
35K21.75 mi0.75 mi27856-5815865-1515865-1528203(Top 99%)15975(Top 99%)15975(Top 969%)
23M23.00 mi1.25 mi27830+2615849+1615849+1627128(Top 96%)15392(Top 96%)15392(Top 934%)
24M24.00 mi1.00 mi27786+4415826+2315826+2326160(Top 92%)14893(Top 92%)14893(Top 904%)
40K24.85 mi0.85 mi27802-16158261582627853(Top 98%)15751(Top 98%)15751(Top 956%)
25.2M25.20 mi0.35 mi27786+1615819+715819+726092(Top 92%)14805(Top 92%)14805(Top 898%)
Finish26.22 mi1.02 mi27848-6215838-1915838-1928195(Top 99%)15962(Top 99%)15962(Top 969%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

26513

Males

15371

M55-59

15371

5K→10K

3.1 - 6.2 mi

Top 96%
×5story building
+79ft-138ft

Overall

27247

Males

15668

M55-59

15668

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

26513

Males

15371

M55-59

15371

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

26755

Males

15441

M55-59

15441

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

26601

Males

15361

M55-59

15361

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

26750

Males

15401

M55-59

15401

25K→30K

15.5 - 18.6 mi

Top 100%
×9story building
+181ft-148ft

Overall

28323

Males

16056

M55-59

16056

30K→20M

18.6 - 20.0 mi

Top 100%
×5story building
+64ft-50ft

Overall

28365

Males

16077

M55-59

16077

20M→21M

20.0 - 21.0 mi

Top 99%
×8story building
+106ft-24ft

Overall

28230

Males

16002

M55-59

16002

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

28203

Males

15975

M55-59

15975

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27128

Males

15392

M55-59

15392

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

26160

Males

14893

M55-59

14893

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27853

Males

15751

M55-59

15751

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26092

Males

14805

M55-59

14805

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

28195

Males

15962

M55-59

15962

Passing Analysis

Category:
Athletes Passed
826
Passed By
1298
Net Change
-472
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27376
5K → 10K163103+60#27376#27316
10K → 15K3097+302#27316#27014
15K → 20K13370+63#27014#26951
20K → Half367+29#26951#26922
Half → 25K6962+7#26922#26915
25K → 30K7562-555#26915#27470
30K → 20M3250-247#27470#27717
20M → 21M485-81#27717#27798
21M → 35K159-58#27798#27856
35K → 23M359+26#27856#27830
23M → 24M451+44#27830#27786
24M → 40K420-16#27786#27802
40K → 25.2M160+16#27802#27786
25.2M → Finish163-62#27786#27848
TOTALS8261298-472
📊

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