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BOSTON MARATHON 2024

David Marchefka

Bib: 7290•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 36%
Gender (Male)
#0 / 14578
Top 47%
Masters (Masters Men)
#0 / 9729
Top 37%
Division (M40-44)
#0 / 2009
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:37
Rank: #9015
Start → 5K
22:37 | 7:17/mi
10K· 6.21 mi
46:25
Rank: #10223 (-1208)
5K → 10K
23:48 | 7:40/mi
15K· 9.32 mi
1:11:15
Rank: #11296 (-1073)
10K → 15K
24:50 | 8:00/mi
20K· 12.43 mi
1:36:18
Rank: #11515 (-219)
15K → 20K
25:03 | 8:04/mi
Half· 13.11 mi
1:41:26
Rank: #11401 (+114)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
2:00:39
Rank: #11054 (+347)
Half → 25K
19:13 | 7:56/mi
30K· 18.64 mi
2:26:03
Rank: #10498 (+556)
25K → 30K
25:24 | 8:11/mi
20M
2:36:49
Rank: #10063 (+435)
30K → 20M
10:46 | 7:55/mi
21M
2:45:12
Rank: #9711 (+352)
20M → 21M
8:23 | 8:23/mi
35K· 21.75 mi
2:51:19
Rank: #9634 (+77)
21M → 35K
6:07 | 8:11/mi
23M
3:01:28
Rank: #9318 (+316)
35K → 23M
10:09 | 8:06/mi
24M
3:09:41
Rank: #9237 (+81)
23M → 24M
8:13 | 8:13/mi
40K· 24.85 mi
3:16:52
Rank: #9143 (+94)
24M → 40K
7:11 | 8:24/mi
25.2M
3:20:05
Rank: #9097 (+46)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:28:24
Rank: #9104 (-7)
25.2M → Finish
8:19 | 8:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:26
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:46:58
Pace8:10 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:2522:377:1722:37
7:17
-
10K
6.21 mi10:53:1346:257:2823:48
7:40
+0:23
15K
9.32 mi11:18:031:11:157:3924:50
8:00
+0:20
20K
12.43 mi11:43:061:36:187:4525:03
8:04
+0:04
Half
13.11 mi11:48:141:41:267:445:08
7:31
-0:33
25K
15.53 mi12:07:272:00:397:4619:13
7:56
+0:25
30K
18.64 mi12:32:512:26:037:5025:24
8:11
+0:15
20M
20.00 mi12:43:372:36:497:5010:46
7:55
-0:16
21M
21.00 mi12:52:002:45:127:528:23
8:23
+0:28
35K
21.75 mi12:58:072:51:197:536:07
8:11
-0:12
23M
23.00 mi13:08:163:01:287:5310:09
8:06
-0:05
24M
24.00 mi13:16:293:09:417:548:13
8:13
+0:07
40K
24.85 mi13:23:403:16:527:557:11
8:24
+0:11
25.2M
25.20 mi13:26:533:20:057:563:13
9:20
+0:56
Finish
26.22 mi13:35:123:28:247:578:19
8:10
-1:10

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

7:17 /mi

Average Pace

7:57 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:33

25% of race

Time at Steady Pace

2:18:04

66% of race

Time at Slower Pace

18:47

9% of race

Average Pace: 7:57 /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 mi10:29:2522:377:1722:37
7:17
#9015
10K
6.21 mi10:53:1346:257:2823:48
7:40
#10223
15K
9.32 mi11:18:031:11:157:3924:50
8:00
#11296
20K
12.43 mi11:43:061:36:187:4525:03
8:04
#11515
Half
13.11 mi11:48:141:41:267:445:08
7:31
#11401
25K
15.53 mi12:07:272:00:397:4619:13
7:56
#11054
30K
18.64 mi12:32:512:26:037:5025:24
8:11
#10498
20M
20.00 mi12:43:372:36:497:5010:46
7:55
#10063
21M
21.00 mi12:52:002:45:127:528:23
8:23
#9711
35K
21.75 mi12:58:072:51:197:536:07
8:11
#9634
23M
23.00 mi13:08:163:01:287:5310:09
8:06
#9318
24M
24.00 mi13:16:293:09:417:548:13
8:13
#9237
40K
24.85 mi13:23:403:16:527:557:11
8:24
#9143
25.2M
25.20 mi13:26:533:20:057:563:13
9:20
#9097
Finish
26.22 mi13:35:123:28:247:578:19
8:10
#9104
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi90157413741313402(Top 52%)9337(Top 64%)9337(Top 465%)
10K6.21 mi3.10 mi10223-12088035-6228035-62211530(Top 45%)8560(Top 59%)8560(Top 426%)
15K9.32 mi3.11 mi11296-10738468-4338468-43313402(Top 52%)9337(Top 64%)9337(Top 465%)
20K12.43 mi3.11 mi11515-2198542-748542-7412241(Top 48%)8760(Top 60%)8760(Top 436%)
Half13.11 mi0.68 mi11401+1148483+598483+599260(Top 36%)7298(Top 50%)7298(Top 363%)
25K15.53 mi2.42 mi11054+3478277+2068277+2069691(Top 38%)7335(Top 50%)7335(Top 365%)
30K18.64 mi3.11 mi10498+5567904+3737904+3738862(Top 35%)6698(Top 46%)6698(Top 333%)
20M20.00 mi1.36 mi10063+4357628+2767628+2766350(Top 25%)5066(Top 35%)5066(Top 252%)
21M21.00 mi1.00 mi9711+3527411+2177411+2175688(Top 22%)4522(Top 31%)4522(Top 225%)
35K21.75 mi0.75 mi9634+777328+837328+838822(Top 35%)6168(Top 42%)6168(Top 307%)
23M23.00 mi1.25 mi9318+3167104+2247104+2246298(Top 25%)4699(Top 32%)4699(Top 234%)
24M24.00 mi1.00 mi9237+817015+897015+897837(Top 31%)5419(Top 37%)5419(Top 270%)
40K24.85 mi0.85 mi9143+946927+886927+887845(Top 31%)5303(Top 36%)5303(Top 264%)
25.2M25.20 mi0.35 mi9097+466877+506877+507983(Top 31%)5315(Top 36%)5315(Top 265%)
Finish26.22 mi1.02 mi9104-76838+396838+399533(Top 37%)6216(Top 43%)6216(Top 309%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

13402

Males

9337

M40-44

9337

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

11530

Males

8560

M40-44

8560

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

13402

Males

9337

M40-44

9337

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

12241

Males

8760

M40-44

8760

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9260

Males

7298

M40-44

7298

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

9691

Males

7335

M40-44

7335

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

8862

Males

6698

M40-44

6698

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6350

Males

5066

M40-44

5066

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

5688

Males

4522

M40-44

4522

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

8822

Males

6168

M40-44

6168

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6298

Males

4699

M40-44

4699

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

7837

Males

5419

M40-44

5419

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

7845

Males

5303

M40-44

5303

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

7983

Males

5315

M40-44

5315

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9533

Males

6216

M40-44

6216

Passing Analysis

Category:
Athletes Passed
3020*
Passed By
3108
Net Change
-89
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9015
5K → 10K381245-1208#9015#10223
10K → 15K381111-1073#10223#11296
15K → 20K165384-219#11296#11515
20K → Half1173+114#11515#11401
Half → 25K38538+347#11401#11054
25K → 30K60246+556#11054#10498
30K → 20M4394+435#10498#10063
20M → 21M357*5+352#10063#9711
21M → 35K11942+77#9711#9634
35K → 23M33620+316#9634#9318
23M → 24M13756+81#9318#9237
24M → 40K13137+94#9237#9143
40K → 25.2M6620+46#9143#9097
25.2M → Finish9097-7#9097#9104
TOTALS3020*3108-89

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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