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BOSTON MARATHON 2025

Sylvain Vaillancourt

Bib: 3768•M

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 29%
Masters (Masters Men)
#0 / 10463
Top 15%
Division (M40-44)
#0 / 2247
Top 37%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:02
Rank: #3452
Start → 5K
20:02 | 6:27/mi
10K· 6.21 mi
40:23
Rank: #3768 (-316)
5K → 10K
20:21 | 6:33/mi
15K· 9.32 mi
1:00:52
Rank: #3888 (-120)
10K → 15K
20:29 | 6:36/mi
20K· 12.43 mi
1:21:37
Rank: #3922 (-34)
15K → 20K
20:45 | 6:41/mi
Half· 13.11 mi
1:26:11
Rank: #3978 (-56)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:42:40
Rank: #4062 (-84)
Half → 25K
16:29 | 6:48/mi
30K· 18.64 mi
2:04:46
Rank: #4258 (-196)
25K → 30K
22:06 | 7:07/mi
20M
2:14:41
Rank: #4373 (-115)
30K → 20M
9:55 | 7:18/mi
21M
2:22:36
Rank: #4535 (-162)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:27:58
Rank: #4587 (-52)
21M → 35K
5:22 | 7:10/mi
23M
2:37:31
Rank: #4771 (-184)
35K → 23M
9:33 | 7:38/mi
24M
2:44:50
Rank: #4872 (-101)
23M → 24M
7:19 | 7:19/mi
40K· 24.85 mi
2:51:21
Rank: #4982 (-110)
24M → 40K
6:31 | 7:37/mi
25.2M
2:54:13
Rank: #5008 (-26)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:01:43
Rank: #5054 (-46)
25.2M → Finish
7:30 | 7:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:11
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:35:32
Pace7:17 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5420:026:2720:02
6:27
-
10K
6.21 mi10:42:1540:236:3020:21
6:33
+0:06
15K
9.32 mi11:02:441:00:526:3220:29
6:36
+0:03
20K
12.43 mi11:23:291:21:376:3420:45
6:41
+0:05
Half
13.11 mi11:28:031:26:116:344:34
6:42
+0:01
25K
15.53 mi11:44:321:42:406:3716:29
6:48
+0:06
30K
18.64 mi12:06:382:04:466:4222:06
7:07
+0:19
20M
20.00 mi12:16:332:14:416:449:55
7:18
+0:11
21M
21.00 mi12:24:282:22:366:477:55
7:55
+0:37
35K
21.75 mi12:29:502:27:586:485:22
7:10
-0:45
23M
23.00 mi12:39:232:37:316:519:33
7:38
+0:28
24M
24.00 mi12:46:422:44:506:527:19
7:19
-0:19
40K
24.85 mi12:53:132:51:216:546:31
7:37
+0:18
25.2M
25.20 mi12:56:052:54:136:552:52
8:19
+0:42
Finish
26.22 mi13:03:353:01:436:567:30
7:22
-0:57

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

6:27 /mi

Average Pace

6:56 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:40

56% of race

Time at Steady Pace

52:12

29% of race

Time at Slower Pace

26:51

15% of race

Average Pace: 6:56 /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 mi10:21:5420:026:2720:02
6:27
#3452
10K
6.21 mi10:42:1540:236:3020:21
6:33
#3768
15K
9.32 mi11:02:441:00:526:3220:29
6:36
#3888
20K
12.43 mi11:23:291:21:376:3420:45
6:41
#3922
Half
13.11 mi11:28:031:26:116:344:34
6:42
#3978
25K
15.53 mi11:44:321:42:406:3716:29
6:48
#4062
30K
18.64 mi12:06:382:04:466:4222:06
7:07
#4258
20M
20.00 mi12:16:332:14:416:449:55
7:18
#4373
21M
21.00 mi12:24:282:22:366:477:55
7:55
#4535
35K
21.75 mi12:29:502:27:586:485:22
7:10
#4587
23M
23.00 mi12:39:232:37:316:519:33
7:38
#4771
24M
24.00 mi12:46:422:44:506:527:19
7:19
#4872
40K
24.85 mi12:53:132:51:216:546:31
7:37
#4982
25.2M
25.20 mi12:56:052:54:136:552:52
8:19
#5008
Finish
26.22 mi13:03:353:01:436:567:30
7:22
#5054
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3452327932794166(Top 15%)3918(Top 24%)3918(Top 174%)
10K6.21 mi3.10 mi3768-3163568-2893568-2894073(Top 14%)3831(Top 24%)3831(Top 170%)
15K9.32 mi3.11 mi3888-1203668-1003668-1004166(Top 15%)3918(Top 24%)3918(Top 174%)
20K12.43 mi3.11 mi3922-343695-273695-274244(Top 15%)3972(Top 25%)3972(Top 177%)
Half13.11 mi0.68 mi3978-563746-513746-515188(Top 18%)4783(Top 30%)4783(Top 213%)
25K15.53 mi2.42 mi4062-843818-723818-724850(Top 17%)4458(Top 28%)4458(Top 198%)
30K18.64 mi3.11 mi4258-1963986-1683986-1685381(Top 19%)4839(Top 30%)4839(Top 215%)
20M20.00 mi1.36 mi4373-1154080-944080-945745(Top 20%)5006(Top 31%)5006(Top 223%)
21M21.00 mi1.00 mi4535-1624209-1294209-1296838(Top 24%)5572(Top 35%)5572(Top 248%)
35K21.75 mi0.75 mi4587-524249-404249-406380(Top 22%)5294(Top 33%)5294(Top 236%)
23M23.00 mi1.25 mi4771-1844389-1404389-1407387(Top 26%)5790(Top 36%)5790(Top 258%)
24M24.00 mi1.00 mi4872-1014463-744463-746470(Top 23%)5192(Top 32%)5192(Top 231%)
40K24.85 mi0.85 mi4982-1104548-854548-857505(Top 26%)5710(Top 35%)5710(Top 254%)
25.2M25.20 mi0.35 mi5008-264567-194567-197610(Top 27%)5669(Top 35%)5669(Top 252%)
Finish26.22 mi1.02 mi5054-464591-244591-248144(Top 29%)5977(Top 37%)5977(Top 266%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4166

Males

3918

M40-44

3918

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

4073

Males

3831

M40-44

3831

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4166

Males

3918

M40-44

3918

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4244

Males

3972

M40-44

3972

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

5188

Males

4783

M40-44

4783

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4850

Males

4458

M40-44

4458

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5381

Males

4839

M40-44

4839

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5745

Males

5006

M40-44

5006

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6838

Males

5572

M40-44

5572

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

6380

Males

5294

M40-44

5294

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7387

Males

5790

M40-44

5790

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6470

Males

5192

M40-44

5192

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7505

Males

5710

M40-44

5710

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7610

Males

5669

M40-44

5669

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8144

Males

5977

M40-44

5977

Passing Analysis

Category:
Athletes Passed
563
Passed By
2165
Net Change
-1602
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3452
5K → 10K31347-316#3452#3768
10K → 15K58178-120#3768#3888
15K → 20K81115-34#3888#3922
20K → Half460-56#3922#3978
Half → 25K53137-84#3978#4062
25K → 30K87283-196#4062#4258
30K → 20M39154-115#4258#4373
20M → 21M33195-162#4373#4535
21M → 35K2981-52#4535#4587
35K → 23M42226-184#4587#4771
23M → 24M40141-101#4771#4872
24M → 40K23133-110#4872#4982
40K → 25.2M1642-26#4982#5008
25.2M → Finish2773-46#5008#5054
TOTALS5632165-1602
📊

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