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BOSTON MARATHON 2025

Shu Hao Lee

Bib: 13214•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 21%
Gender (Male)
#0 / 16105
Top 32%
Masters (Masters Men)
#0 / 10463
Top 19%
Division (M50-54)
#0 / 1996
Top 13%
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
7:06/mi
22:05
↑ 97↓ 3451.5%
10K· 6.21 mi
6:56/mi
43:37
↑ 79↓ 1380.4%
15K· 9.32 mi
6:50/mi
1:04:52
↑ 67↓ 78
20K· 12.43 mi
6:55/mi
1:26:21
↑ 106↓ 860.1%
Half· 13.11 mi
6:46/mi
1:30:58
↑ 19↓ 370.5%
25K· 15.53 mi
6:55/mi
1:47:45
↑ 66↓ 880.2%
30K· 18.64 mi
7:18/mi
2:10:25
↑ 181↓ 1480.2%
20M
7:17/mi
2:20:19
↑ 64↓ 500.2%
21M
7:35/mi
2:27:54
↑ 106↓ 241.6%
35K· 21.75 mi
6:57/mi
2:33:06
↑ 17↓ 861.7%
23M
7:17/mi
2:42:13
↑ 23↓ 630.6%
24M
7:06/mi
2:49:19
↓ 821.3%
40K· 24.85 mi
7:10/mi
2:55:27
↓ 200.3%
25.2M
7:47/mi
2:58:08
↑ 13↓ 160.2%
Finish· 26.22 mi
7:18/mi
3:05:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:58
Pace6:56 /mi
2nd Half
Distance13.11 mi
Time1:34:36
Pace7:13 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4022:057:0622:05
7:06
-
10K
6.21 mi11:12:1243:377:0121:32
6:56
-0:10
15K
9.32 mi11:33:271:04:526:5821:15
6:50
-0:06
20K
12.43 mi11:54:561:26:216:5721:29
6:55
+0:05
Half
13.11 mi11:59:331:30:586:564:37
6:46
-0:09
25K
15.53 mi12:16:201:47:456:5616:47
6:55
+0:09
30K
18.64 mi12:39:002:10:257:0022:40
7:18
+0:23
20M
20.00 mi12:48:542:20:197:019:54
7:17
-0:01
21M
21.00 mi12:56:292:27:547:037:35
7:35
+0:18
35K
21.75 mi13:01:412:33:067:025:12
6:57
-0:38
23M
23.00 mi13:10:482:42:137:039:07
7:17
+0:20
24M
24.00 mi13:17:542:49:197:037:06
7:06
-0:11
40K
24.85 mi13:24:022:55:277:046:08
7:10
+0:04
25.2M
25.20 mi13:26:432:58:087:042:41
7:47
+0:37
Finish
26.22 mi13:34:093:05:347:057:26
7:18
-0:29

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

6:46 /mi

Average Pace

7:05 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:18

94% of race

Time at Steady Pace

10:16

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:05 /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 mi10:50:4022:057:0622:05
7:06
#8690
10K
6.21 mi11:12:1243:377:0121:32
6:56
#7993
15K
9.32 mi11:33:271:04:526:5821:15
6:50
#7494
20K
12.43 mi11:54:561:26:216:5721:29
6:55
#7161
Half
13.11 mi11:59:331:30:586:564:37
6:46
#7112
25K
15.53 mi12:16:201:47:456:5616:47
6:55
#6838
30K
18.64 mi12:39:002:10:257:0022:40
7:18
#6633
20M
20.00 mi12:48:542:20:197:019:54
7:17
#6488
21M
21.00 mi12:56:292:27:547:037:35
7:35
#6338
35K
21.75 mi13:01:412:33:067:025:12
6:57
#6260
23M
23.00 mi13:10:482:42:137:039:07
7:17
#6132
24M
24.00 mi13:17:542:49:197:037:06
7:06
#6036
40K
24.85 mi13:24:022:55:277:046:08
7:10
#5943
25.2M
25.20 mi13:26:432:58:087:042:41
7:47
#5895
Finish
26.22 mi13:34:093:05:347:057:26
7:18
#5875
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8690742874286467(Top 23%)5841(Top 36%)5841(Top 293%)
10K6.21 mi3.10 mi7993+6976979+4496979+4497458(Top 26%)6605(Top 41%)6605(Top 331%)
15K9.32 mi3.11 mi7494+4996638+3416638+3416467(Top 23%)5841(Top 36%)5841(Top 293%)
20K12.43 mi3.11 mi7161+3336388+2506388+2506298(Top 22%)5663(Top 35%)5663(Top 284%)
Half13.11 mi0.68 mi7112+496351+376351+375789(Top 20%)5276(Top 33%)5276(Top 264%)
25K15.53 mi2.42 mi6838+2746124+2276124+2275806(Top 20%)5240(Top 33%)5240(Top 263%)
30K18.64 mi3.11 mi6633+2055932+1925932+1926415(Top 23%)5594(Top 35%)5594(Top 280%)
20M20.00 mi1.36 mi6488+1455803+1295803+1295667(Top 20%)4947(Top 31%)4947(Top 248%)
21M21.00 mi1.00 mi6338+1505674+1295674+1295016(Top 18%)4383(Top 27%)4383(Top 220%)
35K21.75 mi0.75 mi6260+785602+725602+725028(Top 18%)4395(Top 27%)4395(Top 220%)
23M23.00 mi1.25 mi6132+1285481+1215481+1215328(Top 19%)4539(Top 28%)4539(Top 227%)
24M24.00 mi1.00 mi6036+965394+875394+875196(Top 18%)4386(Top 27%)4386(Top 220%)
40K24.85 mi0.85 mi5943+935305+895305+894883(Top 17%)4127(Top 26%)4127(Top 207%)
25.2M25.20 mi0.35 mi5895+485261+445261+444736(Top 17%)3934(Top 24%)3934(Top 197%)
Finish26.22 mi1.02 mi5875+205227+345227+347693(Top 27%)5722(Top 36%)5722(Top 287%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6467

Males

5841

M50-54

5841

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

7458

Males

6605

M50-54

6605

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6467

Males

5841

M50-54

5841

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

6298

Males

5663

M50-54

5663

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5789

Males

5276

M50-54

5276

Half→25K

13.1 - 15.5 mi

Top 20%
×4story building
+66ft-88ft

Overall

5806

Males

5240

M50-54

5240

25K→30K

15.5 - 18.6 mi

Top 23%
×9story building
+181ft-148ft

Overall

6415

Males

5594

M50-54

5594

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5667

Males

4947

M50-54

4947

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

5016

Males

4383

M50-54

4383

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

5028

Males

4395

M50-54

4395

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5328

Males

4539

M50-54

4539

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

5196

Males

4386

M50-54

4386

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4883

Males

4127

M50-54

4127

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4736

Males

3934

M50-54

3934

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7693

Males

5722

M50-54

5722

Passing Analysis

Category:
Athletes Passed
3080
Passed By
265
Net Change
+2815
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8690
5K → 10K72528+697#8690#7993
10K → 15K5078+499#7993#7494
15K → 20K34310+333#7494#7161
20K → Half512+49#7161#7112
Half → 25K28410+274#7112#6838
25K → 30K28176+205#6838#6633
30K → 20M16419+145#6633#6488
20M → 21M1566+150#6488#6338
21M → 35K835+78#6338#6260
35K → 23M15224+128#6260#6132
23M → 24M11115+96#6132#6036
24M → 40K1018+93#6036#5943
40K → 25.2M557+48#5943#5895
25.2M → Finish6747+20#5895#5875
TOTALS3080265+2815
📊

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