Boston Marathon logo
BOSTON MARATHON 2025

Guillaume Lesouef

Bib: 30107•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:18
Rank: #14991
Start → 5K
24:18 | 7:49/mi
10K· 6.21 mi
48:47
Rank: #15246 (-255)
5K → 10K
24:29 | 7:53/mi
15K· 9.32 mi
1:13:39
Rank: #15511 (-265)
10K → 15K
24:52 | 8:00/mi
20K· 12.43 mi
1:38:49
Rank: #15552 (-41)
15K → 20K
25:10 | 8:06/mi
Half· 13.11 mi
1:44:18
Rank: #15593 (-41)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:04:18
Rank: #15550 (+43)
Half → 25K
20:00 | 8:15/mi
30K· 18.64 mi
2:30:45
Rank: #15409 (+141)
25K → 30K
26:27 | 8:31/mi
20M
2:42:23
Rank: #15280 (+129)
30K → 20M
11:38 | 8:34/mi
21M
2:51:23
Rank: #15107 (+173)
20M → 21M
9:00 | 9:00/mi
35K· 21.75 mi
2:57:33
Rank: #15051 (+56)
21M → 35K
6:10 | 8:15/mi
23M
3:08:24
Rank: #14956 (+95)
35K → 23M
10:51 | 8:40/mi
24M
3:17:09
Rank: #14983 (-27)
23M → 24M
8:45 | 8:45/mi
40K· 24.85 mi
3:24:42
Rank: #15002 (-19)
24M → 40K
7:33 | 8:50/mi
25.2M
3:28:03
Rank: #14998 (+4)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:36:29
Rank: #14960 (+38)
25.2M → Finish
8:26 | 8:17/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:18
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:52:11
Pace8:33 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1224:187:4924:18
7:49
-
10K
6.21 mi12:10:4148:477:5124:29
7:53
+0:04
15K
9.32 mi12:35:331:13:397:5424:52
8:00
+0:07
20K
12.43 mi13:00:431:38:497:5725:10
8:06
+0:06
Half
13.11 mi13:06:121:44:187:575:29
8:02
-0:04
25K
15.53 mi13:26:122:04:188:0020:00
8:15
+0:13
30K
18.64 mi13:52:392:30:458:0526:27
8:31
+0:16
20M
20.00 mi14:04:172:42:238:0711:38
8:34
+0:03
21M
21.00 mi14:13:172:51:238:109:00
9:00
+0:26
35K
21.75 mi14:19:272:57:338:106:10
8:15
-0:45
23M
23.00 mi14:30:183:08:248:1110:51
8:40
+0:25
24M
24.00 mi14:39:033:17:098:138:45
8:45
+0:05
40K
24.85 mi14:46:363:24:428:147:33
8:50
+0:05
25.2M
25.20 mi14:49:573:28:038:153:21
9:43
+0:53
Finish
26.22 mi14:58:233:36:298:168:26
8:17
-1:26

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

7:49 /mi

Average Pace

8:16 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:08

37% of race

Time at Steady Pace

1:26:13

40% of race

Time at Slower Pace

51:08

24% of race

Average Pace: 8:15 /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 mi11:46:1224:187:4924:18
7:49
#14991
10K
6.21 mi12:10:4148:477:5124:29
7:53
#15246
15K
9.32 mi12:35:331:13:397:5424:52
8:00
#15511
20K
12.43 mi13:00:431:38:497:5725:10
8:06
#15552
Half
13.11 mi13:06:121:44:187:575:29
8:02
#15593
25K
15.53 mi13:26:122:04:188:0020:00
8:15
#15550
30K
18.64 mi13:52:392:30:458:0526:27
8:31
#15409
20M
20.00 mi14:04:172:42:238:0711:38
8:34
#15280
21M
21.00 mi14:13:172:51:238:109:00
9:00
#15107
35K
21.75 mi14:19:272:57:338:106:10
8:15
#15051
23M
23.00 mi14:30:183:08:248:1110:51
8:40
#14956
24M
24.00 mi14:39:033:17:098:138:45
8:45
#14983
40K
24.85 mi14:46:363:24:428:147:33
8:50
#15002
25.2M
25.20 mi14:49:573:28:038:153:21
9:43
#14998
Finish
26.22 mi14:58:233:36:298:168:26
8:17
#14960
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi14991104221042216065(Top 57%)10838(Top 67%)10838(Top 482%)
10K6.21 mi3.10 mi15246-25510512-9010512-9015514(Top 55%)10626(Top 66%)10626(Top 473%)
15K9.32 mi3.11 mi15511-26510611-9910611-9916065(Top 57%)10838(Top 67%)10838(Top 482%)
20K12.43 mi3.11 mi15552-4110610+110610+115627(Top 55%)10595(Top 66%)10595(Top 472%)
Half13.11 mi0.68 mi15593-4110620-1010620-1016132(Top 57%)10805(Top 67%)10805(Top 481%)
25K15.53 mi2.42 mi15550+4310587+3310587+3315599(Top 55%)10481(Top 65%)10481(Top 466%)
30K18.64 mi3.11 mi15409+14110468+11910468+11914831(Top 52%)9980(Top 62%)9980(Top 444%)
20M20.00 mi1.36 mi15280+12910383+8510383+8514158(Top 50%)9529(Top 59%)9529(Top 424%)
21M21.00 mi1.00 mi15107+17310278+10510278+10513484(Top 47%)9098(Top 56%)9098(Top 405%)
35K21.75 mi0.75 mi15051+5610238+4010238+4013875(Top 49%)9226(Top 57%)9226(Top 411%)
23M23.00 mi1.25 mi14956+9510173+6510173+6514329(Top 50%)9316(Top 58%)9316(Top 415%)
24M24.00 mi1.00 mi14983-2710148+2510148+2515991(Top 56%)10021(Top 62%)10021(Top 446%)
40K24.85 mi0.85 mi15002-1910125+2310125+2315334(Top 54%)9582(Top 59%)9582(Top 426%)
25.2M25.20 mi0.35 mi14998+410107+1810107+1815628(Top 55%)9694(Top 60%)9694(Top 431%)
Finish26.22 mi1.02 mi14960+3810067+4010067+4014748(Top 52%)9368(Top 58%)9368(Top 417%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

16065

Males

10838

M40-44

10838

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

15514

Males

10626

M40-44

10626

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

16065

Males

10838

M40-44

10838

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

15627

Males

10595

M40-44

10595

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16132

Males

10805

M40-44

10805

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15599

Males

10481

M40-44

10481

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

14831

Males

9980

M40-44

9980

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

14158

Males

9529

M40-44

9529

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

13484

Males

9098

M40-44

9098

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13875

Males

9226

M40-44

9226

35K→23M

21.8 - 23.0 mi

Top 50%
×5stories
+23ft-63ft

Overall

14329

Males

9316

M40-44

9316

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15991

Males

10021

M40-44

10021

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15334

Males

9582

M40-44

9582

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15628

Males

9694

M40-44

9694

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

14748

Males

9368

M40-44

9368

Passing Analysis

Category:
Athletes Passed
1916
Passed By
1885
Net Change
+31
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14991
5K → 10K191446-255#14991#15246
10K → 15K127392-265#15246#15511
15K → 20K195236-41#15511#15552
20K → Half2364-41#15552#15593
Half → 25K192149+43#15593#15550
25K → 30K306165+141#15550#15409
30K → 20M17647+129#15409#15280
20M → 21M20532+173#15280#15107
21M → 35K8529+56#15107#15051
35K → 23M15863+95#15051#14956
23M → 24M74101-27#14956#14983
24M → 40K5372-19#14983#15002
40K → 25.2M4339+4#15002#14998
25.2M → Finish8850+38#14998#14960
TOTALS19161885+31
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing