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BOSTON MARATHON 2025

Laurent Fassy

Bib: 1131•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 22%
Gender (Male)
#0 / 16105
Top 33%
Masters (Masters Men)
#0 / 10463
Top 20%
Division (M50-54)
#0 / 1996
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:44
Rank: #1161
Start → 5K
18:44 | 6:02/mi
10K· 6.21 mi
37:42
Rank: #1296 (-135)
5K → 10K
18:58 | 6:06/mi
15K· 9.32 mi
56:46
Rank: #1362 (-66)
10K → 15K
19:04 | 6:08/mi
20K· 12.43 mi
1:16:04
Rank: #1412 (-50)
15K → 20K
19:18 | 6:13/mi
Half· 13.11 mi
1:20:14
Rank: #1418 (-6)
20K → Half
4:10 | 6:06/mi
25K· 15.53 mi
1:35:32
Rank: #1471 (-53)
Half → 25K
15:18 | 6:19/mi
30K· 18.64 mi
1:55:58
Rank: #1587 (-116)
25K → 30K
20:26 | 6:35/mi
20M
2:05:08
Rank: #1634 (-47)
30K → 20M
9:10 | 6:45/mi
21M
2:12:33
Rank: #1724 (-90)
20M → 21M
7:25 | 7:25/mi
35K· 21.75 mi
2:17:22
Rank: #1724
21M → 35K
4:49 | 6:26/mi
23M
2:25:56
Rank: #1756 (-32)
35K → 23M
8:34 | 6:51/mi
24M
2:40:20
Rank: #3471 (-1715)
23M → 24M
14:24 | 14:24/mi
40K· 24.85 mi
2:51:35
Rank: #5039 (-1568)
24M → 40K
11:15 | 13:09/mi
25.2M
2:55:50
Rank: #5343 (-304)
40K → 25.2M
4:15 | 12:19/mi
Finish· 26.22 mi
3:06:26
Rank: #6110 (-767)
25.2M → Finish
10:36 | 10:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:14
Pace6:07 /mi
2nd Half
Distance13.11 mi
Time1:46:12
Pace8:06 /mi
📊Positive Split: 32.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:0218:446:0218:44
6:02
-
10K
6.21 mi10:38:0037:426:0418:58
6:06
+0:04
15K
9.32 mi10:57:0456:466:0519:04
6:08
+0:02
20K
12.43 mi11:16:221:16:046:0719:18
6:13
+0:05
Half
13.11 mi11:20:321:20:146:074:10
6:06
-0:07
25K
15.53 mi11:35:501:35:326:0915:18
6:19
+0:13
30K
18.64 mi11:56:161:55:586:1320:26
6:35
+0:16
20M
20.00 mi12:05:262:05:086:159:10
6:45
+0:10
21M
21.00 mi12:12:512:12:336:197:25
7:25
+0:40
35K
21.75 mi12:17:402:17:226:194:49
6:26
-0:59
23M
23.00 mi12:26:142:25:566:218:34
6:51
+0:25
24M
24.00 mi12:40:382:40:206:4114:24
14:24
+7:33
40K
24.85 mi12:51:532:51:356:5411:15
13:09
-1:15
25.2M
25.20 mi12:56:082:55:506:594:15
12:19
-0:50
Finish
26.22 mi13:06:443:06:267:0710:36
10:24
-1:55

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

6:02 /mi

Average Pace

7:07 /mi

Slowest Pace

14:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:25:56

78% of race

Time at Slower Pace

40:30

22% of race

Average Pace: 7:07 /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 mi10:19:0218:446:0218:44
6:02
#1161
10K
6.21 mi10:38:0037:426:0418:58
6:06
#1296
15K
9.32 mi10:57:0456:466:0519:04
6:08
#1362
20K
12.43 mi11:16:221:16:046:0719:18
6:13
#1412
Half
13.11 mi11:20:321:20:146:074:10
6:06
#1418
25K
15.53 mi11:35:501:35:326:0915:18
6:19
#1471
30K
18.64 mi11:56:161:55:586:1320:26
6:35
#1587
20M
20.00 mi12:05:262:05:086:159:10
6:45
#1634
21M
21.00 mi12:12:512:12:336:197:25
7:25
#1724
35K
21.75 mi12:17:402:17:226:194:49
6:26
#1724
23M
23.00 mi12:26:142:25:566:218:34
6:51
#1756
24M
24.00 mi12:40:382:40:206:4114:24
14:24
#3471
40K
24.85 mi12:51:532:51:356:5411:15
13:09
#5039
25.2M
25.20 mi12:56:082:55:506:594:15
12:19
#5343
Finish
26.22 mi13:06:443:06:267:0710:36
10:24
#6110
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi1161109910991554(Top 5%)1477(Top 9%)1477(Top 74%)
10K6.21 mi3.10 mi1296-1351233-1341233-1341489(Top 5%)1414(Top 9%)1414(Top 71%)
15K9.32 mi3.11 mi1362-661294-611294-611554(Top 5%)1477(Top 9%)1477(Top 74%)
20K12.43 mi3.11 mi1412-501340-461340-461625(Top 6%)1543(Top 10%)1543(Top 77%)
Half13.11 mi0.68 mi1418-61346-61346-61573(Top 6%)1496(Top 9%)1496(Top 75%)
25K15.53 mi2.42 mi1471-531396-501396-501912(Top 7%)1818(Top 11%)1818(Top 91%)
30K18.64 mi3.11 mi1587-1161504-1081504-1082312(Top 8%)2190(Top 14%)2190(Top 110%)
20M20.00 mi1.36 mi1634-471549-451549-452672(Top 9%)2506(Top 16%)2506(Top 126%)
21M21.00 mi1.00 mi1724-901636-871636-874193(Top 15%)3772(Top 23%)3772(Top 189%)
35K21.75 mi0.75 mi17241634+21634+22186(Top 8%)2045(Top 13%)2045(Top 102%)
23M23.00 mi1.25 mi1756-321665-311665-312913(Top 10%)2668(Top 17%)2668(Top 134%)
24M24.00 mi1.00 mi3471-17153259-15943259-159427829(Top 98%)15722(Top 98%)15722(Top 788%)
40K24.85 mi0.85 mi5039-15684596-13374596-133726448(Top 93%)15021(Top 93%)15021(Top 753%)
25.2M25.20 mi0.35 mi5343-3044835-2394835-23923821(Top 84%)13666(Top 85%)13666(Top 685%)
Finish26.22 mi1.02 mi6110-7675395-5605395-56024028(Top 85%)13774(Top 86%)13774(Top 690%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1554

Males

1477

M50-54

1477

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1489

Males

1414

M50-54

1414

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1554

Males

1477

M50-54

1477

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1625

Males

1543

M50-54

1543

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1573

Males

1496

M50-54

1496

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1912

Males

1818

M50-54

1818

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2312

Males

2190

M50-54

2190

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2672

Males

2506

M50-54

2506

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4193

Males

3772

M50-54

3772

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2186

Males

2045

M50-54

2045

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2913

Males

2668

M50-54

2668

23M→24M

23.0 - 24.0 mi

Top 98%
×6stories
+12ft-82ft

Overall

27829

Males

15722

M50-54

15722

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26448

Males

15021

M50-54

15021

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

23821

Males

13666

M50-54

13666

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24028

Males

13774

M50-54

13774

Passing Analysis

Category:
Athletes Passed
246
Passed By
5195
Net Change
-4949
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1161
5K → 10K25160-135#1161#1296
10K → 15K2793-66#1296#1362
15K → 20K3585-50#1362#1412
20K → Half511-6#1412#1418
Half → 25K3285-53#1418#1471
25K → 30K31147-116#1471#1587
30K → 20M2370-47#1587#1634
20M → 21M15105-90#1634#1724
21M → 35K20200#1724#1724
35K → 23M3163-32#1724#1756
23M → 24M11716-1715#1756#3471
24M → 40K01568-1568#3471#5039
40K → 25.2M0304-304#5039#5343
25.2M → Finish1768-767#5343#6110
TOTALS2465195-4949
📊

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