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BOSTON MARATHON 2025

David Lein

Bib: 13730•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:57
Rank: #16823
Start → 5K
24:57 | 8:02/mi
10K· 6.21 mi
50:06
Rank: #16988 (-165)
5K → 10K
25:09 | 8:06/mi
15K· 9.32 mi
1:15:57
Rank: #17419 (-431)
10K → 15K
25:51 | 8:19/mi
20K· 12.43 mi
1:42:30
Rank: #17665 (-246)
15K → 20K
26:33 | 8:33/mi
Half· 13.11 mi
1:48:00
Rank: #17601 (+64)
20K → Half
5:30 | 8:04/mi
25K· 15.53 mi
2:08:55
Rank: #17584 (+17)
Half → 25K
20:55 | 8:38/mi
30K· 18.64 mi
2:36:19
Rank: #17378 (+206)
25K → 30K
27:24 | 8:49/mi
20M
2:47:52
Rank: #17086 (+292)
30K → 20M
11:33 | 8:30/mi
21M
2:57:22
Rank: #16984 (+102)
20M → 21M
9:30 | 9:30/mi
35K· 21.75 mi
3:03:41
Rank: #16904 (+80)
21M → 35K
6:19 | 8:27/mi
23M
3:15:03
Rank: #16880 (+24)
35K → 23M
11:22 | 9:05/mi
24M
3:23:33
Rank: #16769 (+111)
23M → 24M
8:30 | 8:30/mi
40K· 24.85 mi
3:31:26
Rank: #16786 (-17)
24M → 40K
7:53 | 9:13/mi
25.2M
3:34:32
Rank: #16699 (+87)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:42:36
Rank: #16517 (+182)
25.2M → Finish
8:04 | 7:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:00
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time1:54:36
Pace8:45 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2124:578:0224:57
8:02
-
10K
6.21 mi11:21:3050:068:0425:09
8:06
+0:04
15K
9.32 mi11:47:211:15:578:0925:51
8:19
+0:13
20K
12.43 mi12:13:541:42:308:1526:33
8:33
+0:14
Half
13.11 mi12:19:241:48:008:145:30
8:04
-0:29
25K
15.53 mi12:40:192:08:558:1820:55
8:38
+0:34
30K
18.64 mi13:07:432:36:198:2327:24
8:49
+0:11
20M
20.00 mi13:19:162:47:528:2411:33
8:30
-0:19
21M
21.00 mi13:28:462:57:228:279:30
9:30
+1:00
35K
21.75 mi13:35:053:03:418:276:19
8:27
-1:03
23M
23.00 mi13:46:273:15:038:2911:22
9:05
+0:38
24M
24.00 mi13:54:573:23:338:298:30
8:30
-0:35
40K
24.85 mi14:02:503:31:268:307:53
9:13
+0:43
25.2M
25.20 mi14:05:563:34:328:313:06
8:59
-0:14
Finish
26.22 mi14:14:003:42:368:308:04
7:55
-1:04

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

7:55 /mi

Average Pace

8:30 /mi

Slowest Pace

9:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:03:40

29% of race

Time at Steady Pace

1:39:41

45% of race

Time at Slower Pace

59:15

27% of race

Average Pace: 8:29 /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 mi10:56:2124:578:0224:57
8:02
#16823
10K
6.21 mi11:21:3050:068:0425:09
8:06
#16988
15K
9.32 mi11:47:211:15:578:0925:51
8:19
#17419
20K
12.43 mi12:13:541:42:308:1526:33
8:33
#17665
Half
13.11 mi12:19:241:48:008:145:30
8:04
#17601
25K
15.53 mi12:40:192:08:558:1820:55
8:38
#17584
30K
18.64 mi13:07:432:36:198:2327:24
8:49
#17378
20M
20.00 mi13:19:162:47:528:2411:33
8:30
#17086
21M
21.00 mi13:28:462:57:228:279:30
9:30
#16984
35K
21.75 mi13:35:053:03:418:276:19
8:27
#16904
23M
23.00 mi13:46:273:15:038:2911:22
9:05
#16880
24M
24.00 mi13:54:573:23:338:298:30
8:30
#16769
40K
24.85 mi14:02:503:31:268:307:53
9:13
#16786
25.2M
25.20 mi14:05:563:34:328:313:06
8:59
#16699
Finish
26.22 mi14:14:003:42:368:308:04
7:55
#16517
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi16823111301113018178(Top 64%)11698(Top 73%)11698(Top 586%)
10K6.21 mi3.10 mi16988-16511219-8911219-8917143(Top 60%)11310(Top 70%)11310(Top 567%)
15K9.32 mi3.11 mi17419-43111403-18411403-18418178(Top 64%)11698(Top 73%)11698(Top 586%)
20K12.43 mi3.11 mi17665-24611477-7411477-7418515(Top 65%)11823(Top 73%)11823(Top 592%)
Half13.11 mi0.68 mi17601+6411453+2411453+2416331(Top 57%)10907(Top 68%)10907(Top 546%)
25K15.53 mi2.42 mi17584+1711424+2911424+2917943(Top 63%)11494(Top 71%)11494(Top 576%)
30K18.64 mi3.11 mi17378+20611281+14311281+14316704(Top 59%)10797(Top 67%)10797(Top 541%)
20M20.00 mi1.36 mi17086+29211134+14711134+14713778(Top 49%)9351(Top 58%)9351(Top 468%)
21M21.00 mi1.00 mi16984+10211066+6811066+6816058(Top 57%)10282(Top 64%)10282(Top 515%)
35K21.75 mi0.75 mi16904+8011017+4911017+4915121(Top 53%)9786(Top 61%)9786(Top 490%)
23M23.00 mi1.25 mi16880+2410970+4710970+4716682(Top 59%)10372(Top 64%)10372(Top 520%)
24M24.00 mi1.00 mi16769+11110899+7110899+7114490(Top 51%)9375(Top 58%)9375(Top 470%)
40K24.85 mi0.85 mi16786-1710876+2310876+2317424(Top 61%)10562(Top 66%)10562(Top 529%)
25.2M25.20 mi0.35 mi16699+8710829+4710829+4711747(Top 41%)7881(Top 49%)7881(Top 395%)
Finish26.22 mi1.02 mi16517+18210736+9310736+9312288(Top 43%)8191(Top 51%)8191(Top 410%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

18178

Males

11698

M50-54

11698

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

17143

Males

11310

M50-54

11310

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

18178

Males

11698

M50-54

11698

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18515

Males

11823

M50-54

11823

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16331

Males

10907

M50-54

10907

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17943

Males

11494

M50-54

11494

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

16704

Males

10797

M50-54

10797

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

13778

Males

9351

M50-54

9351

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

16058

Males

10282

M50-54

10282

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

15121

Males

9786

M50-54

9786

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16682

Males

10372

M50-54

10372

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

14490

Males

9375

M50-54

9375

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17424

Males

10562

M50-54

10562

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11747

Males

7881

M50-54

7881

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

12288

Males

8191

M50-54

8191

Passing Analysis

Category:
Athletes Passed
2168
Passed By
1862
Net Change
+306
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16823
5K → 10K231396-165#16823#16988
10K → 15K82513-431#16988#17419
15K → 20K117363-246#17419#17665
20K → Half7511+64#17665#17601
Half → 25K168151+17#17601#17584
25K → 30K316110+206#17584#17378
30K → 20M2942+292#17378#17086
20M → 21M16967+102#17086#16984
21M → 35K10222+80#16984#16904
35K → 23M12096+24#16904#16880
23M → 24M13423+111#16880#16769
24M → 40K7794-17#16769#16786
40K → 25.2M881+87#16786#16699
25.2M → Finish19513+182#16699#16517
TOTALS21681862+306
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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