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BOSTON MARATHON 2025

Laurent Nauche

Bib: 28854•M

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
28:20
Rank: #22913
Start → 5K
9:07/mi
28:20 split
10K· 6.21 mi
57:45
Rank: #23534 (-621)
5K → 10K
9:28/mi
29:25 split
15K· 9.32 mi
1:27:44
Rank: #23788 (-254)
10K → 15K
9:39/mi
29:59 split
20K· 12.43 mi
1:57:51
Rank: #23702 (+86)
15K → 20K
9:42/mi
30:07 split
Half· 13.11 mi
2:04:21
Rank: #23698 (+4)
20K → Half
9:32/mi
6:30 split
25K· 15.53 mi
2:28:02
Rank: #23502 (+196)
Half → 25K
9:46/mi
23:41 split
30K· 18.64 mi
2:59:44
Rank: #23220 (+282)
25K → 30K
10:12/mi
31:42 split
20M
3:14:08
Rank: #23168 (+52)
30K → 20M
10:36/mi
14:24 split
21M
3:26:17
Rank: #23211 (-43)
20M → 21M
12:09/mi
12:09 split
35K· 21.75 mi
3:33:28
Rank: #23120 (+91)
21M → 35K
9:36/mi
7:11 split
23M
3:46:07
Rank: #22990 (+130)
35K → 23M
10:06/mi
12:39 split
24M
3:55:44
Rank: #22850 (+140)
23M → 24M
9:37/mi
9:37 split
40K· 24.85 mi
4:04:09
Rank: #22744 (+106)
24M → 40K
9:51/mi
8:25 split
25.2M
4:07:51
Rank: #22702 (+42)
40K → 25.2M
10:44/mi
3:42 split
Finish· 26.22 mi
4:17:24
Rank: #22642 (+60)
25.2M → Finish
9:22/mi
9:33 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:21
Pace9:29 /mi
2nd Half
Distance13.11 mi
Time2:13:03
Pace10:09 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:0428:209:0728:20
9:07
-
10K
6.21 mi11:56:2957:459:1829:25
9:28
+0:21
15K
9.32 mi12:26:281:27:449:2529:59
9:39
+0:11
20K
12.43 mi12:56:351:57:519:2930:07
9:42
+0:03
Half
13.11 mi13:03:052:04:219:296:30
9:32
-0:10
25K
15.53 mi13:26:462:28:029:3223:41
9:46
+0:14
30K
18.64 mi13:58:282:59:449:3931:42
10:12
+0:26
20M
20.00 mi14:12:523:14:089:4214:24
10:36
+0:24
21M
21.00 mi14:25:013:26:179:4912:09
12:09
+1:33
35K
21.75 mi14:32:123:33:289:497:11
9:36
-2:33
23M
23.00 mi14:44:513:46:079:5012:39
10:06
+0:30
24M
24.00 mi14:54:283:55:449:499:37
9:37
-0:29
40K
24.85 mi15:02:534:04:099:498:25
9:51
+0:14
25.2M
25.20 mi15:06:354:07:519:503:42
10:44
+0:53
Finish
26.22 mi15:16:084:17:249:499:33
9:22
-1:22

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

9:07 /mi

Average Pace

9:49 /mi

Slowest Pace

12:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:20

11% of race

Time at Steady Pace

2:34:28

60% of race

Time at Slower Pace

1:14:36

29% of race

Average Pace: 9:49 /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 mi11:27:0428:209:0728:20
9:07
#22913
10K
6.21 mi11:56:2957:459:1829:25
9:28
#23534
15K
9.32 mi12:26:281:27:449:2529:59
9:39
#23788
20K
12.43 mi12:56:351:57:519:2930:07
9:42
#23702
Half
13.11 mi13:03:052:04:219:296:30
9:32
#23698
25K
15.53 mi13:26:462:28:029:3223:41
9:46
#23502
30K
18.64 mi13:58:282:59:449:3931:42
10:12
#23220
20M
20.00 mi14:12:523:14:089:4214:24
10:36
#23168
21M
21.00 mi14:25:013:26:179:4912:09
12:09
#23211
35K
21.75 mi14:32:123:33:289:497:11
9:36
#23120
23M
23.00 mi14:44:513:46:079:5012:39
10:06
#22990
24M
24.00 mi14:54:283:55:449:499:37
9:37
#22850
40K
24.85 mi15:02:534:04:099:498:25
9:51
#22744
25.2M
25.20 mi15:06:354:07:519:503:42
10:44
#22702
Finish
26.22 mi15:16:084:17:249:499:33
9:22
#22642
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi22913137251372524142(Top 85%)14327(Top 89%)14327(Top 718%)
10K6.21 mi3.10 mi23534-62114030-30514030-30524022(Top 85%)14264(Top 89%)14264(Top 715%)
15K9.32 mi3.11 mi23788-25414159-12914159-12924142(Top 85%)14327(Top 89%)14327(Top 718%)
20K12.43 mi3.11 mi23702+8614121+3814121+3823459(Top 83%)13998(Top 87%)13998(Top 701%)
Half13.11 mi0.68 mi23698+414116+514116+523620(Top 83%)14057(Top 87%)14057(Top 704%)
25K15.53 mi2.42 mi23502+19614023+9314023+9322689(Top 80%)13602(Top 84%)13602(Top 681%)
30K18.64 mi3.11 mi23220+28213854+16913854+16922190(Top 78%)13262(Top 82%)13262(Top 664%)
20M20.00 mi1.36 mi23168+5213813+4113813+4122679(Top 80%)13379(Top 83%)13379(Top 670%)
21M21.00 mi1.00 mi23211-4313809+413809+423842(Top 84%)13839(Top 86%)13839(Top 693%)
35K21.75 mi0.75 mi23120+9113763+4613763+4620681(Top 73%)12293(Top 76%)12293(Top 616%)
23M23.00 mi1.25 mi22990+13013671+9213671+9220820(Top 73%)12309(Top 76%)12309(Top 617%)
24M24.00 mi1.00 mi22850+14013587+8413587+8420060(Top 71%)11900(Top 74%)11900(Top 596%)
40K24.85 mi0.85 mi22744+10613522+6513522+6519935(Top 70%)11769(Top 73%)11769(Top 590%)
25.2M25.20 mi0.35 mi22702+4213495+2713495+2719811(Top 70%)11709(Top 73%)11709(Top 587%)
Finish26.22 mi1.02 mi22642+6013445+5013445+5020667(Top 73%)12139(Top 75%)12139(Top 608%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24142

Males

14327

M50-54

14327

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24022

Males

14264

M50-54

14264

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24142

Males

14327

M50-54

14327

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

23459

Males

13998

M50-54

13998

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23620

Males

14057

M50-54

14057

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22689

Males

13602

M50-54

13602

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22190

Males

13262

M50-54

13262

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

22679

Males

13379

M50-54

13379

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

23842

Males

13839

M50-54

13839

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20681

Males

12293

M50-54

12293

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

20820

Males

12309

M50-54

12309

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

20060

Males

11900

M50-54

11900

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19935

Males

11769

M50-54

11769

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19811

Males

11709

M50-54

11709

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

20667

Males

12139

M50-54

12139

Passing Analysis

Category:
Athletes Passed
1688
Passed By
1417
Net Change
+271
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22913
5K → 10K60681-621#22913#23534
10K → 15K92346-254#23534#23788
15K → 20K17387+86#23788#23702
20K → Half2521+4#23702#23698
Half → 25K22832+196#23698#23502
25K → 30K32947+282#23502#23220
30K → 20M9745+52#23220#23168
20M → 21M57100-43#23168#23211
21M → 35K976+91#23211#23120
35K → 23M14414+130#23120#22990
23M → 24M1455+140#22990#22850
24M → 40K11812+106#22850#22744
40K → 25.2M464+42#22744#22702
25.2M → Finish7717+60#22702#22642
TOTALS16881417+271
📊

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