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BOSTON MARATHON 2025

Corey Mclaughlin

Bib: 31517•M

MA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:31/mi
26:28
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
52:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:23/mi
1:18:56
↑ 67↓ 78
20K· 12.43 mi
8:28/mi
1:45:15
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:50:47
↑ 19↓ 370.5%
25K· 15.53 mi
8:33/mi
2:11:32
↑ 66↓ 880.2%
30K· 18.64 mi
8:36/mi
2:38:15
↑ 181↓ 1480.2%
20M
8:45/mi
2:50:09
↑ 64↓ 500.2%
21M
9:11/mi
2:59:20
↑ 106↓ 241.6%
35K· 21.75 mi
8:29/mi
3:05:41
↑ 17↓ 861.7%
23M
8:00/mi
3:15:42
↑ 23↓ 630.6%
24M
8:36/mi
3:24:18
↓ 821.3%
40K· 24.85 mi
9:06/mi
3:32:05
↓ 200.3%
25.2M
9:40/mi
3:35:25
↑ 13↓ 160.2%
Finish· 26.22 mi
7:54/mi
3:43:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:47
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:52:41
Pace8:36 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2826:288:3126:28
8:31
-
10K
6.21 mi12:15:5252:528:3026:24
8:30
-0:01
15K
9.32 mi12:41:561:18:568:2826:04
8:23
-0:07
20K
12.43 mi13:08:151:45:158:2826:19
8:28
+0:05
Half
13.11 mi13:13:471:50:478:275:32
8:07
-0:21
25K
15.53 mi13:34:322:11:328:2820:45
8:33
+0:26
30K
18.64 mi14:01:152:38:158:2926:43
8:36
+0:03
20M
20.00 mi14:13:092:50:098:3011:54
8:45
+0:09
21M
21.00 mi14:22:202:59:208:329:11
9:11
+0:26
35K
21.75 mi14:28:413:05:418:326:21
8:29
-0:42
23M
23.00 mi14:38:423:15:428:3110:01
8:00
-0:29
24M
24.00 mi14:47:183:24:188:318:36
8:36
+0:36
40K
24.85 mi14:55:053:32:058:327:47
9:06
+0:30
25.2M
25.20 mi14:58:253:35:258:333:20
9:40
+0:34
Finish
26.22 mi15:06:283:43:288:328:03
7:54
-1:46

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

7:54 /mi

Average Pace

8:32 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

23:36

11% of race

Time at Steady Pace

2:47:40

75% of race

Time at Slower Pace

32:12

14% of race

Average Pace: 8:31 /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 mi11:49:2826:288:3126:28
8:31
#19980
10K
6.21 mi12:15:5252:528:3026:24
8:30
#19877
15K
9.32 mi12:41:561:18:568:2826:04
8:23
#19470
20K
12.43 mi13:08:151:45:158:2826:19
8:28
#19064
Half
13.11 mi13:13:471:50:478:275:32
8:07
#18958
25K
15.53 mi13:34:322:11:328:2820:45
8:33
#18703
30K
18.64 mi14:01:152:38:158:2926:43
8:36
#18033
20M
20.00 mi14:13:092:50:098:3011:54
8:45
#17830
21M
21.00 mi14:22:202:59:208:329:11
9:11
#17614
35K
21.75 mi14:28:413:05:418:326:21
8:29
#17527
23M
23.00 mi14:38:423:15:428:3110:01
8:00
#17068
24M
24.00 mi14:47:183:24:188:318:36
8:36
#16968
40K
24.85 mi14:55:053:32:058:327:47
9:06
#16975
25.2M
25.20 mi14:58:253:35:258:333:20
9:40
#16939
Finish
26.22 mi15:06:283:43:288:328:03
7:54
#16732
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi19980124291242918628(Top 66%)11895(Top 74%)11895(Top 211%)
10K6.21 mi3.10 mi19877+10312418+1112418+1119764(Top 70%)12365(Top 77%)12365(Top 219%)
15K9.32 mi3.11 mi19470+40712247+17112247+17118628(Top 66%)11895(Top 74%)11895(Top 211%)
20K12.43 mi3.11 mi19064+40612068+17912068+17918008(Top 63%)11611(Top 72%)11611(Top 206%)
Half13.11 mi0.68 mi18958+10612018+5012018+5016644(Top 59%)11039(Top 69%)11039(Top 196%)
25K15.53 mi2.42 mi18703+25511899+11911899+11917512(Top 62%)11318(Top 70%)11318(Top 201%)
30K18.64 mi3.11 mi18033+67011565+33411565+33415387(Top 54%)10230(Top 64%)10230(Top 181%)
20M20.00 mi1.36 mi17830+20311448+11711448+11715410(Top 54%)10104(Top 63%)10104(Top 179%)
21M21.00 mi1.00 mi17614+21611337+11111337+11114527(Top 51%)9587(Top 60%)9587(Top 170%)
35K21.75 mi0.75 mi17527+8711277+6011277+6015368(Top 54%)9884(Top 61%)9884(Top 175%)
23M23.00 mi1.25 mi17068+45911043+23411043+23410033(Top 35%)7262(Top 45%)7262(Top 129%)
24M24.00 mi1.00 mi16968+10010984+5910984+5915147(Top 53%)9649(Top 60%)9649(Top 171%)
40K24.85 mi0.85 mi16975-710960+2410960+2416861(Top 59%)10307(Top 64%)10307(Top 183%)
25.2M25.20 mi0.35 mi16939+3610928+3210928+3215395(Top 54%)9590(Top 60%)9590(Top 170%)
Finish26.22 mi1.02 mi16732+20710818+11010818+11012161(Top 43%)8127(Top 50%)8127(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18628

Males

11895

M18-39

11895

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19764

Males

12365

M18-39

12365

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18628

Males

11895

M18-39

11895

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

18008

Males

11611

M18-39

11611

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16644

Males

11039

M18-39

11039

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17512

Males

11318

M18-39

11318

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15387

Males

10230

M18-39

10230

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15410

Males

10104

M18-39

10104

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14527

Males

9587

M18-39

9587

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15368

Males

9884

M18-39

9884

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

10033

Males

7262

M18-39

7262

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

15147

Males

9649

M18-39

9649

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16861

Males

10307

M18-39

10307

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15395

Males

9590

M18-39

9590

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12161

Males

8127

M18-39

8127

Passing Analysis

Category:
Athletes Passed
3815
Passed By
567
Net Change
+3248
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19980
5K → 10K340237+103#19980#19877
10K → 15K45144+407#19877#19470
15K → 20K44034+406#19470#19064
20K → Half1104+106#19064#18958
Half → 25K29035+255#18958#18703
25K → 30K68414+670#18703#18033
30K → 20M23027+203#18033#17830
20M → 21M22711+216#17830#17614
21M → 35K10821+87#17614#17527
35K → 23M4601+459#17527#17068
23M → 24M12929+100#17068#16968
24M → 40K7683-7#16968#16975
40K → 25.2M5216+36#16975#16939
25.2M → Finish21811+207#16939#16732
TOTALS3815567+3248
📊

Passing Visuals

Category:
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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