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BOSTON MARATHON 2025

Sean Laffey

Bib: 1698•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 24%
Division (M18-39)
#0 / 5642
Top 49%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:35
Rank: #2458
Start → 5K
19:35 | 6:18/mi
10K· 6.21 mi
39:28
Rank: #2741 (-283)
5K → 10K
19:53 | 6:24/mi
15K· 9.32 mi
59:17
Rank: #2742 (-1)
10K → 15K
19:49 | 6:23/mi
20K· 12.43 mi
1:19:46
Rank: #2977 (-235)
15K → 20K
20:29 | 6:36/mi
Half· 13.11 mi
1:24:40
Rank: #3225 (-248)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:42:11
Rank: #3860 (-635)
Half → 25K
17:31 | 7:13/mi
30K· 18.64 mi
2:05:16
Rank: #4483 (-623)
25K → 30K
23:05 | 7:26/mi
20M
2:14:54
Rank: #4466 (+17)
30K → 20M
9:38 | 7:05/mi
21M
2:23:01
Rank: #4689 (-223)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:28:01
Rank: #4601 (+88)
21M → 35K
5:00 | 6:41/mi
23M
2:36:35
Rank: #4443 (+158)
35K → 23M
8:34 | 6:51/mi
24M
2:43:29
Rank: #4409 (+34)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:49:11
Rank: #4271 (+138)
24M → 40K
5:42 | 6:40/mi
25.2M
2:51:45
Rank: #4238 (+33)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:58:23
Rank: #4135 (+103)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:40
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:33:43
Pace7:09 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:1519:356:1819:35
6:18
-
10K
6.21 mi10:40:0839:286:2119:53
6:24
+0:06
15K
9.32 mi10:59:5759:176:2219:49
6:23
-0:01
20K
12.43 mi11:20:261:19:466:2520:29
6:36
+0:13
Half
13.11 mi11:25:201:24:406:274:54
7:11
+0:35
25K
15.53 mi11:42:511:42:116:3517:31
7:13
+0:02
30K
18.64 mi12:05:562:05:166:4323:05
7:26
+0:13
20M
20.00 mi12:15:342:14:546:459:38
7:05
-0:21
21M
21.00 mi12:23:412:23:016:498:07
8:07
+1:02
35K
21.75 mi12:28:412:28:016:485:00
6:41
-1:26
23M
23.00 mi12:37:152:36:356:488:34
6:51
+0:10
24M
24.00 mi12:44:092:43:296:496:54
6:54
+0:03
40K
24.85 mi12:49:512:49:116:485:42
6:40
-0:14
25.2M
25.20 mi12:52:252:51:456:492:34
7:27
+0:47
Finish
26.22 mi12:59:032:58:236:496:38
6:31
-0:56

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

6:18 /mi

Average Pace

6:49 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:24

48% of race

Time at Steady Pace

35:48

20% of race

Time at Slower Pace

56:11

31% of race

Average Pace: 6:48 /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 mi10:20:1519:356:1819:35
6:18
#2458
10K
6.21 mi10:40:0839:286:2119:53
6:24
#2741
15K
9.32 mi10:59:5759:176:2219:49
6:23
#2742
20K
12.43 mi11:20:261:19:466:2520:29
6:36
#2977
Half
13.11 mi11:25:201:24:406:274:54
7:11
#3225
25K
15.53 mi11:42:511:42:116:3517:31
7:13
#3860
30K
18.64 mi12:05:562:05:166:4323:05
7:26
#4483
20M
20.00 mi12:15:342:14:546:459:38
7:05
#4466
21M
21.00 mi12:23:412:23:016:498:07
8:07
#4689
35K
21.75 mi12:28:412:28:016:485:00
6:41
#4601
23M
23.00 mi12:37:152:36:356:488:34
6:51
#4443
24M
24.00 mi12:44:092:43:296:496:54
6:54
#4409
40K
24.85 mi12:49:512:49:116:485:42
6:40
#4271
25.2M
25.20 mi12:52:252:51:456:492:34
7:27
#4238
Finish
26.22 mi12:59:032:58:236:496:38
6:31
#4135
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2458234123412797(Top 10%)2663(Top 17%)2663(Top 47%)
10K6.21 mi3.10 mi2741-2832610-2692610-2693041(Top 11%)2895(Top 18%)2895(Top 51%)
15K9.32 mi3.11 mi2742-12614-42614-42797(Top 10%)2663(Top 17%)2663(Top 47%)
20K12.43 mi3.11 mi2977-2352837-2232837-2233644(Top 13%)3441(Top 21%)3441(Top 61%)
Half13.11 mi0.68 mi3225-2483072-2353072-2358843(Top 31%)7365(Top 46%)7365(Top 131%)
25K15.53 mi2.42 mi3860-6353637-5653637-5657763(Top 27%)6610(Top 41%)6610(Top 117%)
30K18.64 mi3.11 mi4483-6234186-5494186-5497218(Top 25%)6095(Top 38%)6095(Top 108%)
20M20.00 mi1.36 mi4466+174155+314155+314595(Top 16%)4165(Top 26%)4165(Top 74%)
21M21.00 mi1.00 mi4689-2234343-1884343-1888008(Top 28%)6243(Top 39%)6243(Top 111%)
35K21.75 mi0.75 mi4601+884257+864257+863400(Top 12%)3099(Top 19%)3099(Top 55%)
23M23.00 mi1.25 mi4443+1584111+1464111+1462906(Top 10%)2661(Top 17%)2661(Top 47%)
24M24.00 mi1.00 mi4409+344071+404071+404067(Top 14%)3584(Top 22%)3584(Top 64%)
40K24.85 mi0.85 mi4271+1383941+1303941+1302235(Top 8%)2050(Top 13%)2050(Top 36%)
25.2M25.20 mi0.35 mi4238+333910+313910+313129(Top 11%)2770(Top 17%)2770(Top 49%)
Finish26.22 mi1.02 mi4135+1033810+1003810+1002862(Top 10%)2557(Top 16%)2557(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2797

Males

2663

M18-39

2663

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3041

Males

2895

M18-39

2895

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2797

Males

2663

M18-39

2663

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3644

Males

3441

M18-39

3441

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8843

Males

7365

M18-39

7365

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7763

Males

6610

M18-39

6610

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

7218

Males

6095

M18-39

6095

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4595

Males

4165

M18-39

4165

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

8008

Males

6243

M18-39

6243

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3400

Males

3099

M18-39

3099

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2906

Males

2661

M18-39

2661

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

4067

Males

3584

M18-39

3584

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2235

Males

2050

M18-39

2050

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3129

Males

2770

M18-39

2770

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2862

Males

2557

M18-39

2557

Passing Analysis

Category:
Athletes Passed
914
Passed By
2591
Net Change
-1677
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2458
5K → 10K35318-283#2458#2741
10K → 15K7576-1#2741#2742
15K → 20K28263-235#2742#2977
20K → Half0248-248#2977#3225
Half → 25K7642-635#3225#3860
25K → 30K32655-623#3860#4483
30K → 20M8467+17#4483#4466
20M → 21M28251-223#4466#4689
21M → 35K957+88#4689#4601
35K → 23M1679+158#4601#4443
23M → 24M6834+34#4443#4409
24M → 40K1402+138#4409#4271
40K → 25.2M4310+33#4271#4238
25.2M → Finish1129+103#4238#4135
TOTALS9142591-1677
📊

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