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BOSTON MARATHON 2025

Hsiangchi Lee

Bib: 15009•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 39%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 41%
Division (M50-54)
#0 / 1996
Top 43%
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
7:22/mi
22:53
↑ 97↓ 3451.5%
10K· 6.21 mi
7:27/mi
46:01
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:09:17
↑ 67↓ 78
20K· 12.43 mi
7:38/mi
1:32:59
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:38:06
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:56:39
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:21:10
↑ 181↓ 1480.2%
20M
7:55/mi
2:31:55
↑ 64↓ 500.2%
21M
8:39/mi
2:40:34
↑ 106↓ 241.6%
35K· 21.75 mi
7:33/mi
2:46:13
↑ 17↓ 861.7%
23M
8:06/mi
2:56:21
↑ 23↓ 630.6%
24M
7:52/mi
3:04:13
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:11:24
↓ 200.3%
25.2M
9:34/mi
3:14:42
↑ 13↓ 160.2%
Finish· 26.22 mi
8:37/mi
3:23:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:06
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:45:23
Pace8:02 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:4022:537:2222:53
7:22
-
10K
6.21 mi11:18:4846:017:2423:08
7:27
+0:05
15K
9.32 mi11:42:041:09:177:2623:16
7:29
+0:02
20K
12.43 mi12:05:461:32:597:2923:42
7:38
+0:09
Half
13.11 mi12:10:531:38:067:295:07
7:30
-0:08
25K
15.53 mi12:29:261:56:397:3118:33
7:39
+0:09
30K
18.64 mi12:53:572:21:107:3424:31
7:53
+0:14
20M
20.00 mi13:04:422:31:557:3610:45
7:55
+0:02
21M
21.00 mi13:13:212:40:347:398:39
8:39
+0:44
35K
21.75 mi13:19:002:46:137:395:39
7:33
-1:06
23M
23.00 mi13:29:082:56:217:4010:08
8:06
+0:33
24M
24.00 mi13:37:003:04:137:417:52
7:52
-0:14
40K
24.85 mi13:44:113:11:247:427:11
8:24
+0:32
25.2M
25.20 mi13:47:293:14:427:443:18
9:34
+1:10
Finish
26.22 mi13:56:163:23:297:468:47
8:37
-0:57

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

7:22 /mi

Average Pace

7:46 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:03

39% of race

Time at Steady Pace

1:35:31

47% of race

Time at Slower Pace

27:55

14% of race

Average Pace: 7:46 /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 mi10:55:4022:537:2222:53
7:22
#10994
10K
6.21 mi11:18:4846:017:2423:08
7:27
#11278
15K
9.32 mi11:42:041:09:177:2623:16
7:29
#11382
20K
12.43 mi12:05:461:32:597:2923:42
7:38
#11481
Half
13.11 mi12:10:531:38:067:295:07
7:30
#11498
25K
15.53 mi12:29:261:56:397:3118:33
7:39
#11413
30K
18.64 mi12:53:572:21:107:3424:31
7:53
#11223
20M
20.00 mi13:04:422:31:557:3610:45
7:55
#11050
21M
21.00 mi13:13:212:40:347:398:39
8:39
#11041
35K
21.75 mi13:19:002:46:137:395:39
7:33
#10936
23M
23.00 mi13:29:082:56:217:4010:08
8:06
#10883
24M
24.00 mi13:37:003:04:137:417:52
7:52
#10818
40K
24.85 mi13:44:113:11:247:427:11
8:24
#10872
25.2M
25.20 mi13:47:293:14:427:443:18
9:34
#10933
Finish
26.22 mi13:56:163:23:297:468:47
8:37
#11171
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi109948690869011657(Top 41%)8903(Top 55%)8903(Top 446%)
10K6.21 mi3.10 mi11278-2848811-1218811-12111587(Top 41%)8947(Top 56%)8947(Top 448%)
15K9.32 mi3.11 mi11382-1048833-228833-2211657(Top 41%)8903(Top 55%)8903(Top 446%)
20K12.43 mi3.11 mi11481-998850-178850-1711784(Top 41%)8870(Top 55%)8870(Top 444%)
Half13.11 mi0.68 mi11498-178856-68856-611631(Top 41%)8841(Top 55%)8841(Top 443%)
25K15.53 mi2.42 mi11413+858782+748782+7411146(Top 39%)8459(Top 53%)8459(Top 424%)
30K18.64 mi3.11 mi11223+1908613+1698613+16910559(Top 37%)7963(Top 49%)7963(Top 399%)
20M20.00 mi1.36 mi11050+1738492+1218492+1219813(Top 35%)7443(Top 46%)7443(Top 373%)
21M21.00 mi1.00 mi11041+98450+428450+4211349(Top 40%)8047(Top 50%)8047(Top 403%)
35K21.75 mi0.75 mi10936+1058367+838367+839011(Top 32%)6873(Top 43%)6873(Top 344%)
23M23.00 mi1.25 mi10883+538304+638304+6310687(Top 38%)7582(Top 47%)7582(Top 380%)
24M24.00 mi1.00 mi10818+658233+718233+7110311(Top 36%)7331(Top 46%)7331(Top 367%)
40K24.85 mi0.85 mi10872-548221+128221+1212770(Top 45%)8411(Top 52%)8411(Top 421%)
25.2M25.20 mi0.35 mi10933-618233-128233-1214862(Top 52%)9320(Top 58%)9320(Top 467%)
Finish26.22 mi1.02 mi11171-2388303-708303-7016926(Top 60%)10350(Top 64%)10350(Top 519%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11657

Males

8903

M50-54

8903

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11587

Males

8947

M50-54

8947

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11657

Males

8903

M50-54

8903

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11784

Males

8870

M50-54

8870

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11631

Males

8841

M50-54

8841

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

11146

Males

8459

M50-54

8459

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10559

Males

7963

M50-54

7963

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

9813

Males

7443

M50-54

7443

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

11349

Males

8047

M50-54

8047

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

9011

Males

6873

M50-54

6873

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10687

Males

7582

M50-54

7582

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10311

Males

7331

M50-54

7331

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12770

Males

8411

M50-54

8411

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14862

Males

9320

M50-54

9320

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

16926

Males

10350

M50-54

10350

Passing Analysis

Category:
Athletes Passed
1737
Passed By
1914
Net Change
-177
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10994
5K → 10K138422-284#10994#11278
10K → 15K149253-104#11278#11382
15K → 20K153252-99#11382#11481
20K → Half2845-17#11481#11498
Half → 25K192107+85#11498#11413
25K → 30K321131+190#11413#11223
30K → 20M20633+173#11223#11050
20M → 21M10293+9#11050#11041
21M → 35K11510+105#11041#10936
35K → 23M13380+53#10936#10883
23M → 24M10742+65#10883#10818
24M → 40K54108-54#10818#10872
40K → 25.2M1980-61#10872#10933
25.2M → Finish20258-238#10933#11171
TOTALS17371914-177
📊

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