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BOSTON MARATHON 2025

Matthew Lacroix

Bib: 4004•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 44%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:17
Rank: #12184
Start → 5K
23:17 | 7:30/mi
10K· 6.21 mi
46:38
Rank: #12169 (+15)
5K → 10K
23:21 | 7:31/mi
15K· 9.32 mi
1:10:08
Rank: #12201 (-32)
10K → 15K
23:30 | 7:34/mi
20K· 12.43 mi
1:33:22
Rank: #11743 (+458)
15K → 20K
23:14 | 7:29/mi
Half· 13.11 mi
1:38:23
Rank: #11680 (+63)
20K → Half
5:01 | 7:21/mi
25K· 15.53 mi
1:56:22
Rank: #11254 (+426)
Half → 25K
17:59 | 7:25/mi
30K· 18.64 mi
2:21:25
Rank: #11327 (-73)
25K → 30K
25:03 | 8:04/mi
20M
2:34:22
Rank: #12064 (-737)
30K → 20M
12:57 | 9:32/mi
21M
2:44:00
Rank: #12374 (-310)
20M → 21M
9:38 | 9:38/mi
35K· 21.75 mi
2:50:53
Rank: #12685 (-311)
21M → 35K
6:53 | 9:12/mi
23M
3:01:19
Rank: #12631 (+54)
35K → 23M
10:26 | 8:20/mi
24M
3:09:43
Rank: #12674 (-43)
23M → 24M
8:24 | 8:24/mi
40K· 24.85 mi
3:17:02
Rank: #12706 (-32)
24M → 40K
7:19 | 8:33/mi
25.2M
3:20:13
Rank: #12712 (-6)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:27:46
Rank: #12517 (+195)
25.2M → Finish
7:33 | 7:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:23
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:49:23
Pace8:21 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1123:177:3023:17
7:30
-
10K
6.21 mi11:18:3246:387:3023:21
7:31
+0:01
15K
9.32 mi11:42:021:10:087:3123:30
7:34
+0:03
20K
12.43 mi12:05:161:33:227:3123:14
7:29
-0:05
Half
13.11 mi12:10:171:38:237:305:01
7:21
-0:08
25K
15.53 mi12:28:161:56:227:2917:59
7:25
+0:04
30K
18.64 mi12:53:192:21:257:3525:03
8:04
+0:39
20M
20.00 mi13:06:162:34:227:4312:57
9:32
+1:28
21M
21.00 mi13:15:542:44:007:499:38
9:38
+0:06
35K
21.75 mi13:22:472:50:537:516:53
9:12
-0:26
23M
23.00 mi13:33:133:01:197:5310:26
8:20
-0:52
24M
24.00 mi13:41:373:09:437:548:24
8:24
+0:04
40K
24.85 mi13:48:563:17:027:567:19
8:33
+0:09
25.2M
25.20 mi13:52:073:20:137:573:11
9:14
+0:41
Finish
26.22 mi13:59:403:27:467:567:33
7:25
-1:49

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

7:21 /mi

Average Pace

7:56 /mi

Slowest Pace

9:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:55

60% of race

Time at Steady Pace

43:53

21% of race

Time at Slower Pace

39:58

19% of race

Average Pace: 7:55 /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 mi10:55:1123:177:3023:17
7:30
#12184
10K
6.21 mi11:18:3246:387:3023:21
7:31
#12169
15K
9.32 mi11:42:021:10:087:3123:30
7:34
#12201
20K
12.43 mi12:05:161:33:227:3123:14
7:29
#11743
Half
13.11 mi12:10:171:38:237:305:01
7:21
#11680
25K
15.53 mi12:28:161:56:227:2917:59
7:25
#11254
30K
18.64 mi12:53:192:21:257:3525:03
8:04
#11327
20M
20.00 mi13:06:162:34:227:4312:57
9:32
#12064
21M
21.00 mi13:15:542:44:007:499:38
9:38
#12374
35K
21.75 mi13:22:472:50:537:516:53
9:12
#12685
23M
23.00 mi13:33:133:01:197:5310:26
8:20
#12631
24M
24.00 mi13:41:373:09:437:548:24
8:24
#12674
40K
24.85 mi13:48:563:17:027:567:19
8:33
#12706
25.2M
25.20 mi13:52:073:20:137:573:11
9:14
#12712
Finish
26.22 mi13:59:403:27:467:567:33
7:25
#12517
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi121849258925812288(Top 43%)9196(Top 57%)9196(Top 163%)
10K6.21 mi3.10 mi12169+159240+189240+1812242(Top 43%)9257(Top 57%)9257(Top 164%)
15K9.32 mi3.11 mi12201-329217+239217+2312288(Top 43%)9196(Top 57%)9196(Top 163%)
20K12.43 mi3.11 mi11743+4588973+2448973+24410564(Top 37%)8295(Top 52%)8295(Top 147%)
Half13.11 mi0.68 mi11680+638945+288945+2810472(Top 37%)8285(Top 51%)8285(Top 147%)
25K15.53 mi2.42 mi11254+4268706+2398706+2399292(Top 33%)7502(Top 47%)7502(Top 133%)
30K18.64 mi3.11 mi11327-738660+468660+4611826(Top 42%)8586(Top 53%)8586(Top 152%)
20M20.00 mi1.36 mi12064-7378965-3058965-30519283(Top 68%)11810(Top 73%)11810(Top 209%)
21M21.00 mi1.00 mi12374-3109069-1049069-10416674(Top 59%)10547(Top 65%)10547(Top 187%)
35K21.75 mi0.75 mi12685-3119189-1209189-12019142(Top 67%)11561(Top 72%)11561(Top 205%)
23M23.00 mi1.25 mi12631+549135+549135+5412225(Top 43%)8333(Top 52%)8333(Top 148%)
24M24.00 mi1.00 mi12674-439129+69129+613841(Top 49%)9066(Top 56%)9066(Top 161%)
40K24.85 mi0.85 mi12706-329108+219108+2113763(Top 48%)8888(Top 55%)8888(Top 158%)
25.2M25.20 mi0.35 mi12712-69099+99099+913032(Top 46%)8477(Top 53%)8477(Top 150%)
Finish26.22 mi1.02 mi12517+1958974+1258974+1258545(Top 30%)6217(Top 39%)6217(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

12288

Males

9196

M18-39

9196

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

12242

Males

9257

M18-39

9257

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

12288

Males

9196

M18-39

9196

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

10564

Males

8295

M18-39

8295

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10472

Males

8285

M18-39

8285

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

9292

Males

7502

M18-39

7502

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11826

Males

8586

M18-39

8586

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19283

Males

11810

M18-39

11810

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16674

Males

10547

M18-39

10547

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

19142

Males

11561

M18-39

11561

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

12225

Males

8333

M18-39

8333

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13841

Males

9066

M18-39

9066

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13763

Males

8888

M18-39

8888

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

13032

Males

8477

M18-39

8477

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8545

Males

6217

M18-39

6217

Passing Analysis

Category:
Athletes Passed
2206
Passed By
2539
Net Change
-333
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12184
5K → 10K258243+15#12184#12169
10K → 15K179211-32#12169#12201
15K → 20K48325+458#12201#11743
20K → Half685+63#11743#11680
Half → 25K4359+426#11680#11254
25K → 30K203276-73#11254#11327
30K → 20M27764-737#11327#12064
20M → 21M40350-310#12064#12374
21M → 35K21332-311#12374#12685
35K → 23M13682+54#12685#12631
23M → 24M5598-43#12631#12674
24M → 40K72104-32#12674#12706
40K → 25.2M2733-6#12706#12712
25.2M → Finish2027+195#12712#12517
TOTALS22062539-333
📊

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