Boston Marathon logo
BOSTON MARATHON 2025

Myeong Seong Kang

Bib: 8530•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 31%
Gender (Male)
#0 / 16105
Top 44%
Masters (Masters Men)
#0 / 10463
Top 32%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
20:46
Rank: #5314
Start → 5K
20:46 | 6:41/mi
10K· 6.21 mi
41:43
Rank: #5516 (-202)
5K → 10K
20:57 | 6:45/mi
15K· 9.32 mi
1:02:47
Rank: #5591 (-75)
10K → 15K
21:04 | 6:47/mi
20K· 12.43 mi
1:24:13
Rank: #5737 (-146)
15K → 20K
21:26 | 6:54/mi
Half· 13.11 mi
1:28:51
Rank: #5756 (-19)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:46:38
Rank: #6295 (-539)
Half → 25K
17:47 | 7:20/mi
30K· 18.64 mi
2:10:41
Rank: #6737 (-442)
25K → 30K
24:03 | 7:44/mi
20M
2:22:13
Rank: #7138 (-401)
30K → 20M
11:32 | 8:29/mi
21M
2:31:33
Rank: #7505 (-367)
20M → 21M
9:20 | 9:20/mi
35K· 21.75 mi
2:37:39
Rank: #7666 (-161)
21M → 35K
6:06 | 8:09/mi
23M
2:48:23
Rank: #7981 (-315)
35K → 23M
10:44 | 8:34/mi
24M
2:56:41
Rank: #8197 (-216)
23M → 24M
8:18 | 8:18/mi
40K· 24.85 mi
3:04:01
Rank: #8400 (-203)
24M → 40K
7:20 | 8:35/mi
25.2M
3:07:11
Rank: #8474 (-74)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:15:32
Rank: #8721 (-247)
25.2M → Finish
8:21 | 8:12/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:51
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:46:41
Pace8:08 /mi
📊Positive Split: 20.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:0820:466:4120:46
6:41
-
10K
6.21 mi11:07:0541:436:4320:57
6:45
+0:04
15K
9.32 mi11:28:091:02:476:4421:04
6:47
+0:02
20K
12.43 mi11:49:351:24:136:4721:26
6:54
+0:07
Half
13.11 mi11:54:131:28:516:474:38
6:47
-0:07
25K
15.53 mi12:12:001:46:386:5217:47
7:20
+0:33
30K
18.64 mi12:36:032:10:417:0124:03
7:44
+0:24
20M
20.00 mi12:47:352:22:137:0711:32
8:29
+0:45
21M
21.00 mi12:56:552:31:337:139:20
9:20
+0:51
35K
21.75 mi13:03:012:37:397:156:06
8:09
-1:11
23M
23.00 mi13:13:452:48:237:1910:44
8:34
+0:25
24M
24.00 mi13:22:032:56:417:228:18
8:18
-0:16
40K
24.85 mi13:29:233:04:017:247:20
8:35
+0:17
25.2M
25.20 mi13:32:333:07:117:263:10
9:11
+0:36
Finish
26.22 mi13:40:543:15:327:288:21
8:12
-0:59

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

6:41 /mi

Average Pace

7:28 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:46:38

55% of race

Time at Steady Pace

1:16:24

39% of race

Time at Slower Pace

12:30

6% of race

Average Pace: 7:27 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:46:0820:466:4120:46
6:41
#5314
10K
6.21 mi11:07:0541:436:4320:57
6:45
#5516
15K
9.32 mi11:28:091:02:476:4421:04
6:47
#5591
20K
12.43 mi11:49:351:24:136:4721:26
6:54
#5737
Half
13.11 mi11:54:131:28:516:474:38
6:47
#5756
25K
15.53 mi12:12:001:46:386:5217:47
7:20
#6295
30K
18.64 mi12:36:032:10:417:0124:03
7:44
#6737
20M
20.00 mi12:47:352:22:137:0711:32
8:29
#7138
21M
21.00 mi12:56:552:31:337:139:20
9:20
#7505
35K
21.75 mi13:03:012:37:397:156:06
8:09
#7666
23M
23.00 mi13:13:452:48:237:1910:44
8:34
#7981
24M
24.00 mi13:22:032:56:417:228:18
8:18
#8197
40K
24.85 mi13:29:233:04:017:247:20
8:35
#8400
25.2M
25.20 mi13:32:333:07:117:263:10
9:11
#8474
Finish
26.22 mi13:40:543:15:327:288:21
8:12
#8721
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5314494549455915(Top 21%)5389(Top 33%)5389(Top 240%)
10K6.21 mi3.10 mi5516-2025100-1555100-1555782(Top 20%)5298(Top 33%)5298(Top 236%)
15K9.32 mi3.11 mi5591-755157-575157-575915(Top 21%)5389(Top 33%)5389(Top 240%)
20K12.43 mi3.11 mi5737-1465267-1105267-1106196(Top 22%)5586(Top 35%)5586(Top 249%)
Half13.11 mi0.68 mi5756-195283-165283-166130(Top 22%)5551(Top 34%)5551(Top 247%)
25K15.53 mi2.42 mi6295-5395698-4155698-4158623(Top 30%)7123(Top 44%)7123(Top 317%)
30K18.64 mi3.11 mi6737-4426011-3136011-3139476(Top 33%)7414(Top 46%)7414(Top 330%)
20M20.00 mi1.36 mi7138-4016282-2716282-27113678(Top 48%)9293(Top 58%)9293(Top 414%)
21M21.00 mi1.00 mi7505-3676488-2066488-20615285(Top 54%)9900(Top 61%)9900(Top 441%)
35K21.75 mi0.75 mi7666-1616576-886576-8813237(Top 47%)8893(Top 55%)8893(Top 396%)
23M23.00 mi1.25 mi7981-3156728-1526728-15213719(Top 48%)9020(Top 56%)9020(Top 401%)
24M24.00 mi1.00 mi8197-2166829-1016829-10113221(Top 47%)8746(Top 54%)8746(Top 389%)
40K24.85 mi0.85 mi8400-2036921-926921-9213880(Top 49%)8929(Top 55%)8929(Top 397%)
25.2M25.20 mi0.35 mi8474-746944-236944-2312726(Top 45%)8311(Top 52%)8311(Top 370%)
Finish26.22 mi1.02 mi8721-2477059-1157059-11514188(Top 50%)9098(Top 56%)9098(Top 405%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5915

Males

5389

M40-44

5389

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5782

Males

5298

M40-44

5298

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5915

Males

5389

M40-44

5389

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6196

Males

5586

M40-44

5586

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

6130

Males

5551

M40-44

5551

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

8623

Males

7123

M40-44

7123

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

9476

Males

7414

M40-44

7414

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

13678

Males

9293

M40-44

9293

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

15285

Males

9900

M40-44

9900

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

13237

Males

8893

M40-44

8893

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

13719

Males

9020

M40-44

9020

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

13221

Males

8746

M40-44

8746

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13880

Males

8929

M40-44

8929

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12726

Males

8311

M40-44

8311

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14188

Males

9098

M40-44

9098

Passing Analysis

Category:
Athletes Passed
632
Passed By
4039
Net Change
-3407
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5314
5K → 10K97299-202#5314#5516
10K → 15K97172-75#5516#5591
15K → 20K87233-146#5591#5737
20K → Half1736-19#5737#5756
Half → 25K38577-539#5756#6295
25K → 30K79521-442#6295#6737
30K → 20M27428-401#6737#7138
20M → 21M19386-367#7138#7505
21M → 35K22183-161#7505#7666
35K → 23M46361-315#7666#7981
23M → 24M29245-216#7981#8197
24M → 40K33236-203#8197#8400
40K → 25.2M2195-74#8400#8474
25.2M → Finish20267-247#8474#8721
TOTALS6324039-3407
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing