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BOSTON MARATHON 2025

Simon Leblanc

Bib: 277•M

QC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:27
Rank: #4422
Start → 5K
20:27 | 6:35/mi
10K· 6.21 mi
40:34
Rank: #3969 (+453)
5K → 10K
20:07 | 6:28/mi
15K· 9.32 mi
1:00:40
Rank: #3752 (+217)
10K → 15K
20:06 | 6:28/mi
20K· 12.43 mi
1:20:35
Rank: #3392 (+360)
15K → 20K
19:55 | 6:25/mi
Half· 13.11 mi
1:24:53
Rank: #3332 (+60)
20K → Half
4:18 | 6:18/mi
25K· 15.53 mi
1:40:43
Rank: #3274 (+58)
Half → 25K
15:50 | 6:32/mi
30K· 18.64 mi
2:00:41
Rank: #2875 (+399)
25K → 30K
19:58 | 6:26/mi
20M
2:09:24
Rank: #2688 (+187)
30K → 20M
8:43 | 6:25/mi
21M
2:16:05
Rank: #2545 (+143)
20M → 21M
6:41 | 6:41/mi
35K· 21.75 mi
2:20:42
Rank: #2462 (+83)
21M → 35K
4:37 | 6:10/mi
23M
2:28:37
Rank: #2316 (+146)
35K → 23M
7:55 | 6:19/mi
24M
2:34:49
Rank: #2212 (+104)
23M → 24M
6:12 | 6:12/mi
40K· 24.85 mi
2:40:10
Rank: #2117 (+95)
24M → 40K
5:21 | 6:15/mi
25.2M
2:42:30
Rank: #2081 (+36)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:48:41
Rank: #2007 (+74)
25.2M → Finish
6:11 | 6:04/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:24:53
Pace6:28 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:23:48
Pace6:24 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4520:276:3520:27
6:35
-
10K
6.21 mi10:45:5240:346:3220:07
6:28
-0:07
15K
9.32 mi11:05:581:00:406:3120:06
6:28
0:00
20K
12.43 mi11:25:531:20:356:2919:55
6:25
-0:03
Half
13.11 mi11:30:111:24:536:284:18
6:18
-0:07
25K
15.53 mi11:46:011:40:436:2915:50
6:32
+0:14
30K
18.64 mi12:05:592:00:416:2819:58
6:26
-0:06
20M
20.00 mi12:14:422:09:246:288:43
6:25
-0:01
21M
21.00 mi12:21:232:16:056:296:41
6:41
+0:16
35K
21.75 mi12:26:002:20:426:284:37
6:10
-0:31
23M
23.00 mi12:33:552:28:376:287:55
6:19
+0:09
24M
24.00 mi12:40:072:34:496:276:12
6:12
-0:07
40K
24.85 mi12:45:282:40:106:275:21
6:15
+0:03
25.2M
25.20 mi12:47:482:42:306:272:20
6:46
+0:31
Finish
26.22 mi12:53:592:48:416:266:11
6:04
-0:42

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

6:04 /mi

Average Pace

6:26 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:40

95% of race

Time at Steady Pace

9:01

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:26 /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 mi10:25:4520:276:3520:27
6:35
#4422
10K
6.21 mi10:45:5240:346:3220:07
6:28
#3969
15K
9.32 mi11:05:581:00:406:3120:06
6:28
#3752
20K
12.43 mi11:25:531:20:356:2919:55
6:25
#3392
Half
13.11 mi11:30:111:24:536:284:18
6:18
#3332
25K
15.53 mi11:46:011:40:436:2915:50
6:32
#3274
30K
18.64 mi12:05:592:00:416:2819:58
6:26
#2875
20M
20.00 mi12:14:422:09:246:288:43
6:25
#2688
21M
21.00 mi12:21:232:16:056:296:41
6:41
#2545
35K
21.75 mi12:26:002:20:426:284:37
6:10
#2462
23M
23.00 mi12:33:552:28:376:287:55
6:19
#2316
24M
24.00 mi12:40:072:34:496:276:12
6:12
#2212
40K
24.85 mi12:45:282:40:106:275:21
6:15
#2117
25.2M
25.20 mi12:47:482:42:306:272:20
6:46
#2081
Finish
26.22 mi12:53:592:48:416:266:11
6:04
#2007
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4422415841583352(Top 12%)3179(Top 20%)3179(Top 56%)
10K6.21 mi3.10 mi3969+4533753+4053753+4053532(Top 12%)3343(Top 21%)3343(Top 59%)
15K9.32 mi3.11 mi3752+2173546+2073546+2073352(Top 12%)3179(Top 20%)3179(Top 56%)
20K12.43 mi3.11 mi3392+3603219+3273219+3272569(Top 9%)2449(Top 15%)2449(Top 43%)
Half13.11 mi0.68 mi3332+603167+523167+522475(Top 9%)2364(Top 15%)2364(Top 42%)
25K15.53 mi2.42 mi3274+583115+523115+523033(Top 11%)2878(Top 18%)2878(Top 51%)
30K18.64 mi3.11 mi2875+3992739+3762739+3761655(Top 6%)1569(Top 10%)1569(Top 28%)
20M20.00 mi1.36 mi2688+1872560+1792560+1791298(Top 5%)1226(Top 8%)1226(Top 22%)
21M21.00 mi1.00 mi2545+1432427+1332427+1331155(Top 4%)1094(Top 7%)1094(Top 19%)
35K21.75 mi0.75 mi2462+832346+812346+811149(Top 4%)1084(Top 7%)1084(Top 19%)
23M23.00 mi1.25 mi2316+1462208+1382208+138938(Top 3%)883(Top 5%)883(Top 16%)
24M24.00 mi1.00 mi2212+1042105+1032105+1031031(Top 4%)970(Top 6%)970(Top 17%)
40K24.85 mi0.85 mi2117+952011+942011+94879(Top 3%)825(Top 5%)825(Top 15%)
25.2M25.20 mi0.35 mi2081+361975+361975+36908(Top 3%)841(Top 5%)841(Top 15%)
Finish26.22 mi1.02 mi2007+741903+721903+721099(Top 4%)1029(Top 6%)1029(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3352

Males

3179

M18-39

3179

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3532

Males

3343

M18-39

3343

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3352

Males

3179

M18-39

3179

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2569

Males

2449

M18-39

2449

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2475

Males

2364

M18-39

2364

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3033

Males

2878

M18-39

2878

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1655

Males

1569

M18-39

1569

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1298

Males

1226

M18-39

1226

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1155

Males

1094

M18-39

1094

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1149

Males

1084

M18-39

1084

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

938

Males

883

M18-39

883

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1031

Males

970

M18-39

970

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

879

Males

825

M18-39

825

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

908

Males

841

M18-39

841

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1099

Males

1029

M18-39

1029

Passing Analysis

Category:
Athletes Passed
2523
Passed By
108
Net Change
+2415
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4422
5K → 10K48027+453#4422#3969
10K → 15K23619+217#3969#3752
15K → 20K3633+360#3752#3392
20K → Half611+60#3392#3332
Half → 25K9840+58#3332#3274
25K → 30K4034+399#3274#2875
30K → 20M1870+187#2875#2688
20M → 21M1441+143#2688#2545
21M → 35K830+83#2545#2462
35K → 23M1460+146#2462#2316
23M → 24M1073+104#2316#2212
24M → 40K972+95#2212#2117
40K → 25.2M393+36#2117#2081
25.2M → Finish795+74#2081#2007
TOTALS2523108+2415
📊

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