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BOSTON MARATHON 2023

Brian Leclair

Bib: 30582•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:59
Rank: #24983
Start → 5K
10:37/mi
32:59 split
10K· 6.21 mi
1:05:44
Rank: #24866 (+117)
5K → 10K
10:32/mi
32:45 split
15K· 9.32 mi
1:37:30
Rank: #24559 (+307)
10K → 15K
10:13/mi
31:46 split
20K· 12.43 mi
2:12:52
Rank: #24740 (-181)
15K → 20K
11:23/mi
35:22 split
Half· 13.11 mi
2:20:42
Rank: #24809 (-69)
20K → Half
11:29/mi
7:50 split
25K· 15.53 mi
2:49:13
Rank: #24846 (-37)
Half → 25K
11:46/mi
28:31 split
30K· 18.64 mi
3:31:05
Rank: #25133 (-287)
25K → 30K
13:29/mi
41:52 split
20M
3:51:32
Rank: #25307 (-174)
30K → 20M
15:03/mi
20:27 split
21M
4:06:20
Rank: #25343 (-36)
20M → 21M
14:48/mi
14:48 split
35K· 21.75 mi
4:16:02
Rank: #25356 (-13)
21M → 35K
12:58/mi
9:42 split
23M
4:32:17
Rank: #25361 (-5)
35K → 23M
12:59/mi
16:15 split
24M
4:45:06
Rank: #25368 (-7)
23M → 24M
12:49/mi
12:49 split
40K· 24.85 mi
4:56:46
Rank: #25385 (-17)
24M → 40K
13:39/mi
11:40 split
25.2M
5:01:57
Rank: #25389 (-4)
40K → 25.2M
15:02/mi
5:11 split
Finish· 26.22 mi
5:14:23
Rank: #25401 (-12)
25.2M → Finish
12:12/mi
12:26 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:42
Pace10:44 /mi
2nd Half
Distance13.11 mi
Time2:53:41
Pace13:15 /mi
📊Positive Split: 23.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4732:5910:3732:59
10:37
-
10K
6.21 mi12:25:321:05:4410:3532:45
10:32
-0:05
15K
9.32 mi12:57:181:37:3010:2831:46
10:13
-0:19
20K
12.43 mi13:32:402:12:5210:4135:22
11:23
+1:10
Half
13.11 mi13:40:302:20:4210:447:50
11:29
+0:06
25K
15.53 mi14:09:012:49:1310:5428:31
11:46
+0:17
30K
18.64 mi14:50:533:31:0511:1941:52
13:29
+1:43
20M
20.00 mi15:11:203:51:3211:3520:27
15:03
+1:34
21M
21.00 mi15:26:084:06:2011:4414:48
14:48
-0:15
35K
21.75 mi15:35:504:16:0211:469:42
12:58
-1:50
23M
23.00 mi15:52:054:32:1711:5016:15
12:59
+0:01
24M
24.00 mi16:04:544:45:0611:5312:49
12:49
-0:10
40K
24.85 mi16:16:344:56:4611:5611:40
13:39
+0:50
25.2M
25.20 mi16:21:455:01:5711:595:11
15:02
+1:23
Finish
26.22 mi16:34:115:14:2312:0012:26
12:12
-2:50

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

10:13 /mi

Average Pace

12:00 /mi

Slowest Pace

15:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:13

54% of race

Time at Steady Pace

1:33:04

30% of race

Time at Slower Pace

52:06

17% of race

Average Pace: 11:59 /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 mi11:52:4732:5910:3732:59
10:37
#24983
10K
6.21 mi12:25:321:05:4410:3532:45
10:32
#24866
15K
9.32 mi12:57:181:37:3010:2831:46
10:13
#24559
20K
12.43 mi13:32:402:12:5210:4135:22
11:23
#24740
Half
13.11 mi13:40:302:20:4210:447:50
11:29
#24809
25K
15.53 mi14:09:012:49:1310:5428:31
11:46
#24846
30K
18.64 mi14:50:533:31:0511:1941:52
13:29
#25133
20M
20.00 mi15:11:203:51:3211:3520:27
15:03
#25307
21M
21.00 mi15:26:084:06:2011:4414:48
14:48
#25343
35K
21.75 mi15:35:504:16:0211:469:42
12:58
#25356
23M
23.00 mi15:52:054:32:1711:5016:15
12:59
#25361
24M
24.00 mi16:04:544:45:0611:5312:49
12:49
#25368
40K
24.85 mi16:16:344:56:4611:5611:40
13:39
#25385
25.2M
25.20 mi16:21:455:01:5711:595:11
15:02
#25389
Finish
26.22 mi16:34:115:14:2312:0012:26
12:12
#25401
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24983145401454023934(Top 90%)14055(Top 93%)14055(Top 266%)
10K6.21 mi3.10 mi24866+11714484+5614484+5624751(Top 93%)14429(Top 95%)14429(Top 273%)
15K9.32 mi3.11 mi24559+30714344+14014344+14023934(Top 90%)14055(Top 93%)14055(Top 266%)
20K12.43 mi3.11 mi24740-18114408-6414408-6425102(Top 94%)14539(Top 96%)14539(Top 275%)
Half13.11 mi0.68 mi24809-6914439-3114439-3125468(Top 96%)14675(Top 97%)14675(Top 278%)
25K15.53 mi2.42 mi24846-3714443-414443-424949(Top 94%)14441(Top 95%)14441(Top 273%)
30K18.64 mi3.11 mi25133-28714550-10714550-10725730(Top 97%)14745(Top 97%)14745(Top 279%)
20M20.00 mi1.36 mi25307-17414619-6914619-6926309(Top 99%)14999(Top 99%)14999(Top 284%)
21M21.00 mi1.00 mi25343-3614622-314622-325608(Top 96%)14674(Top 97%)14674(Top 278%)
35K21.75 mi0.75 mi25356-1314620+214620+225537(Top 96%)14599(Top 96%)14599(Top 276%)
23M23.00 mi1.25 mi25361-514624-414624-425060(Top 94%)14375(Top 95%)14375(Top 272%)
24M24.00 mi1.00 mi25368-7146241462425346(Top 95%)14477(Top 95%)14477(Top 274%)
40K24.85 mi0.85 mi25385-1714629-514629-525457(Top 96%)14538(Top 96%)14538(Top 275%)
25.2M25.20 mi0.35 mi25389-414627+214627+225721(Top 97%)14660(Top 97%)14660(Top 277%)
Finish26.22 mi1.02 mi25401-1214630-314630-325419(Top 95%)14517(Top 96%)14517(Top 275%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

23934

Males

14055

M18-39

14055

5K→10K

3.1 - 6.2 mi

Top 93%
×5stories
+79ft-138ft

Overall

24751

Males

14429

M18-39

14429

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

23934

Males

14055

M18-39

14055

15K→20K

9.3 - 12.4 mi

Top 94%
×5stories
+106ft-86ft

Overall

25102

Males

14539

M18-39

14539

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

25468

Males

14675

M18-39

14675

Half→25K

13.1 - 15.5 mi

Top 94%
×4stories
+66ft-88ft

Overall

24949

Males

14441

M18-39

14441

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

25730

Males

14745

M18-39

14745

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

26309

Males

14999

M18-39

14999

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

25608

Males

14674

M18-39

14674

21M→35K

21.0 - 21.8 mi

Top 96%
×7stories
+17ft-86ft

Overall

25537

Males

14599

M18-39

14599

35K→23M

21.8 - 23.0 mi

Top 94%
×5stories
+23ft-63ft

Overall

25060

Males

14375

M18-39

14375

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

25346

Males

14477

M18-39

14477

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25457

Males

14538

M18-39

14538

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25721

Males

14660

M18-39

14660

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2stories
+22ft-21ft

Overall

25419

Males

14517

M18-39

14517

Passing Analysis

Category:
Athletes Passed
815
Passed By
1233
Net Change
-418
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24983
5K → 10K253136+117#24983#24866
10K → 15K32215+307#24866#24559
15K → 20K38219-181#24559#24740
20K → Half574-69#24740#24809
Half → 25K6198-37#24809#24846
25K → 30K22309-287#24846#25133
30K → 20M7181-174#25133#25307
20M → 21M1349-36#25307#25343
21M → 35K1326-13#25343#25356
35K → 23M2833-5#25356#25361
23M → 24M2128-7#25361#25368
24M → 40K1431-17#25368#25385
40K → 25.2M610-4#25385#25389
25.2M → Finish1224-12#25389#25401
TOTALS8151233-418
📊

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