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BOSTON MARATHON 2025

David Marcoux

Bib: 3843•M

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 14%
Masters (Masters Men)
#0 / 10463
Top 4%
Division (M40-44)
#0 / 2247
Top 12%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:08
Rank: #1658
Start → 5K
19:08 | 6:10/mi
10K· 6.21 mi
38:36
Rank: #1944 (-286)
5K → 10K
19:28 | 6:16/mi
15K· 9.32 mi
58:10
Rank: #2051 (-107)
10K → 15K
19:34 | 6:18/mi
20K· 12.43 mi
1:17:54
Rank: #2100 (-49)
15K → 20K
19:44 | 6:21/mi
Half· 13.11 mi
1:22:10
Rank: #2111 (-11)
20K → Half
4:16 | 6:15/mi
25K· 15.53 mi
1:37:52
Rank: #2172 (-61)
Half → 25K
15:42 | 6:29/mi
30K· 18.64 mi
1:58:47
Rank: #2306 (-134)
25K → 30K
20:55 | 6:44/mi
20M
2:08:07
Rank: #2345 (-39)
30K → 20M
9:20 | 6:52/mi
21M
2:15:26
Rank: #2376 (-31)
20M → 21M
7:19 | 7:19/mi
35K· 21.75 mi
2:20:29
Rank: #2404 (-28)
21M → 35K
5:03 | 6:45/mi
23M
2:29:02
Rank: #2402 (+2)
35K → 23M
8:33 | 6:50/mi
24M
2:35:41
Rank: #2398 (+4)
23M → 24M
6:39 | 6:39/mi
40K· 24.85 mi
2:41:34
Rank: #2412 (-14)
24M → 40K
5:53 | 6:53/mi
25.2M
2:44:14
Rank: #2432 (-20)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
2:51:02
Rank: #2449 (-17)
25.2M → Finish
6:48 | 6:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:10
Pace6:16 /mi
2nd Half
Distance13.11 mi
Time1:28:52
Pace6:47 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3519:086:1019:08
6:10
-
10K
6.21 mi10:41:0338:366:1319:28
6:16
+0:06
15K
9.32 mi11:00:3758:106:1419:34
6:18
+0:02
20K
12.43 mi11:20:211:17:546:1619:44
6:21
+0:03
Half
13.11 mi11:24:371:22:106:164:16
6:15
-0:06
25K
15.53 mi11:40:191:37:526:1815:42
6:29
+0:14
30K
18.64 mi12:01:141:58:476:2220:55
6:44
+0:15
20M
20.00 mi12:10:342:08:076:249:20
6:52
+0:08
21M
21.00 mi12:17:532:15:266:277:19
7:19
+0:27
35K
21.75 mi12:22:562:20:296:285:03
6:45
-0:34
23M
23.00 mi12:31:292:29:026:298:33
6:50
+0:05
24M
24.00 mi12:38:082:35:416:296:39
6:39
-0:11
40K
24.85 mi12:44:012:41:346:305:53
6:53
+0:14
25.2M
25.20 mi12:46:412:44:146:312:40
7:44
+0:51
Finish
26.22 mi12:53:292:51:026:326:48
6:40
-1:04

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

6:10 /mi

Average Pace

6:32 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:10

48% of race

Time at Steady Pace

1:13:00

43% of race

Time at Slower Pace

15:52

9% of race

Average Pace: 6:31 /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 mi10:21:3519:086:1019:08
6:10
#1658
10K
6.21 mi10:41:0338:366:1319:28
6:16
#1944
15K
9.32 mi11:00:3758:106:1419:34
6:18
#2051
20K
12.43 mi11:20:211:17:546:1619:44
6:21
#2100
Half
13.11 mi11:24:371:22:106:164:16
6:15
#2111
25K
15.53 mi11:40:191:37:526:1815:42
6:29
#2172
30K
18.64 mi12:01:141:58:476:2220:55
6:44
#2306
20M
20.00 mi12:10:342:08:076:249:20
6:52
#2345
21M
21.00 mi12:17:532:15:266:277:19
7:19
#2376
35K
21.75 mi12:22:562:20:296:285:03
6:45
#2404
23M
23.00 mi12:31:292:29:026:298:33
6:50
#2402
24M
24.00 mi12:38:082:35:416:296:39
6:39
#2398
40K
24.85 mi12:44:012:41:346:305:53
6:53
#2412
25.2M
25.20 mi12:46:412:44:146:312:40
7:44
#2432
Finish
26.22 mi12:53:292:51:026:326:48
6:40
#2449
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1658157615762327(Top 8%)2220(Top 14%)2220(Top 99%)
10K6.21 mi3.10 mi1944-2861852-2761852-2762210(Top 8%)2113(Top 13%)2113(Top 94%)
15K9.32 mi3.11 mi2051-1071955-1031955-1032327(Top 8%)2220(Top 14%)2220(Top 99%)
20K12.43 mi3.11 mi2100-492004-492004-492285(Top 8%)2178(Top 14%)2178(Top 97%)
Half13.11 mi0.68 mi2111-112015-112015-112288(Top 8%)2189(Top 14%)2189(Top 97%)
25K15.53 mi2.42 mi2172-612073-582073-582759(Top 10%)2626(Top 16%)2626(Top 117%)
30K18.64 mi3.11 mi2306-1342201-1282201-1283047(Top 11%)2864(Top 18%)2864(Top 127%)
20M20.00 mi1.36 mi2345-392236-352236-353322(Top 12%)3073(Top 19%)3073(Top 137%)
21M21.00 mi1.00 mi2376-312264-282264-283697(Top 13%)3379(Top 21%)3379(Top 150%)
35K21.75 mi0.75 mi2404-282293-292293-293818(Top 13%)3440(Top 21%)3440(Top 153%)
23M23.00 mi1.25 mi2402+22287+62287+62853(Top 10%)2615(Top 16%)2615(Top 116%)
24M24.00 mi1.00 mi2398+42281+62281+62729(Top 10%)2503(Top 16%)2503(Top 111%)
40K24.85 mi0.85 mi2412-142289-82289-83266(Top 11%)2918(Top 18%)2918(Top 130%)
25.2M25.20 mi0.35 mi2432-202306-172306-174494(Top 16%)3772(Top 23%)3772(Top 168%)
Finish26.22 mi1.02 mi2449-172321-152321-153730(Top 13%)3235(Top 20%)3235(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2327

Males

2220

M40-44

2220

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2210

Males

2113

M40-44

2113

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2327

Males

2220

M40-44

2220

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2285

Males

2178

M40-44

2178

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2288

Males

2189

M40-44

2189

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2759

Males

2626

M40-44

2626

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

3047

Males

2864

M40-44

2864

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3322

Males

3073

M40-44

3073

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3697

Males

3379

M40-44

3379

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3818

Males

3440

M40-44

3440

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2853

Males

2615

M40-44

2615

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2729

Males

2503

M40-44

2503

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3266

Males

2918

M40-44

2918

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4494

Males

3772

M40-44

3772

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3730

Males

3235

M40-44

3235

Passing Analysis

Category:
Athletes Passed
440
Passed By
1231
Net Change
-791
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1658
5K → 10K21307-286#1658#1944
10K → 15K34141-107#1944#2051
15K → 20K56105-49#2051#2100
20K → Half718-11#2100#2111
Half → 25K3394-61#2111#2172
25K → 30K48182-134#2172#2306
30K → 20M2968-39#2306#2345
20M → 21M3364-31#2345#2376
21M → 35K1846-28#2376#2404
35K → 23M5149+2#2404#2402
23M → 24M4238+4#2402#2398
24M → 40K2842-14#2398#2412
40K → 25.2M1030-20#2412#2432
25.2M → Finish3047-17#2432#2449
TOTALS4401231-791
📊

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