Boston Marathon logo
BOSTON MARATHON 2024

Mark Malczynski

Bib: 8869•M

PA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 42%
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Top 44%
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
24:25
Rank: #13547
Start → 5K
24:25 | 7:52/mi
10K· 6.21 mi
48:43
Rank: #13142 (+405)
5K → 10K
24:18 | 7:49/mi
15K· 9.32 mi
1:12:54
Rank: #12679 (+463)
10K → 15K
24:11 | 7:47/mi
20K· 12.43 mi
1:37:03
Rank: #11982 (+697)
15K → 20K
24:09 | 7:46/mi
Half· 13.11 mi
1:42:21
Rank: #11909 (+73)
20K → Half
5:18 | 7:46/mi
25K· 15.53 mi
2:01:25
Rank: #11395 (+514)
Half → 25K
19:04 | 7:52/mi
30K· 18.64 mi
2:26:52
Rank: #10799 (+596)
25K → 30K
25:27 | 8:11/mi
20M
2:38:25
Rank: #10639 (+160)
30K → 20M
11:33 | 8:30/mi
21M
2:47:23
Rank: #10427 (+212)
20M → 21M
8:58 | 8:58/mi
35K· 21.75 mi
2:53:55
Rank: #10462 (-35)
21M → 35K
6:32 | 8:44/mi
23M
3:05:14
Rank: #10454 (+8)
35K → 23M
11:19 | 9:02/mi
24M
3:14:19
Rank: #10544 (-90)
23M → 24M
9:05 | 9:05/mi
40K· 24.85 mi
3:22:13
Rank: #10584 (-40)
24M → 40K
7:54 | 9:14/mi
25.2M
3:25:46
Rank: #10614 (-30)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
3:35:20
Rank: #10848 (-234)
25.2M → Finish
9:34 | 9:23/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:21
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time1:52:59
Pace8:37 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4824:257:5224:25
7:52
-
10K
6.21 mi11:14:0648:437:5024:18
7:49
-0:03
15K
9.32 mi11:38:171:12:547:4924:11
7:47
-0:02
20K
12.43 mi12:02:261:37:037:4924:09
7:46
-0:01
Half
13.11 mi12:07:441:42:217:485:18
7:46
0:00
25K
15.53 mi12:26:482:01:257:4919:04
7:52
+0:06
30K
18.64 mi12:52:152:26:527:5325:27
8:11
+0:19
20M
20.00 mi13:03:482:38:257:5511:33
8:30
+0:19
21M
21.00 mi13:12:462:47:237:588:58
8:58
+0:28
35K
21.75 mi13:19:182:53:558:006:32
8:44
-0:14
23M
23.00 mi13:30:373:05:148:0311:19
9:02
+0:18
24M
24.00 mi13:39:423:14:198:069:05
9:05
+0:03
40K
24.85 mi13:47:363:22:138:087:54
9:14
+0:09
25.2M
25.20 mi13:51:093:25:468:103:33
10:18
+1:04
Finish
26.22 mi14:00:433:35:208:139:34
9:23
-0:55

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

7:46 /mi

Average Pace

8:13 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:25

56% of race

Time at Steady Pace

43:32

20% of race

Time at Slower Pace

50:23

23% of race

Average Pace: 8:13 /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 mi10:49:4824:257:5224:25
7:52
#13547
10K
6.21 mi11:14:0648:437:5024:18
7:49
#13142
15K
9.32 mi11:38:171:12:547:4924:11
7:47
#12679
20K
12.43 mi12:02:261:37:037:4924:09
7:46
#11982
Half
13.11 mi12:07:441:42:217:485:18
7:46
#11909
25K
15.53 mi12:26:482:01:257:4919:04
7:52
#11395
30K
18.64 mi12:52:152:26:527:5325:27
8:11
#10799
20M
20.00 mi13:03:482:38:257:5511:33
8:30
#10639
21M
21.00 mi13:12:462:47:237:588:58
8:58
#10427
35K
21.75 mi13:19:182:53:558:006:32
8:44
#10462
23M
23.00 mi13:30:373:05:148:0311:19
9:02
#10454
24M
24.00 mi13:39:423:14:198:069:05
9:05
#10544
40K
24.85 mi13:47:363:22:138:087:54
9:14
#10584
25.2M
25.20 mi13:51:093:25:468:103:33
10:18
#10614
Finish
26.22 mi14:00:433:35:208:139:34
9:23
#10848
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi135479481948111792(Top 46%)8639(Top 59%)8639(Top 430%)
10K6.21 mi3.10 mi13142+4059301+1809301+18012819(Top 50%)9126(Top 63%)9126(Top 454%)
15K9.32 mi3.11 mi12679+4639081+2209081+22011792(Top 46%)8639(Top 59%)8639(Top 430%)
20K12.43 mi3.11 mi11982+6978749+3328749+33210226(Top 40%)7759(Top 53%)7759(Top 386%)
Half13.11 mi0.68 mi11909+738712+378712+3711046(Top 43%)8191(Top 56%)8191(Top 408%)
25K15.53 mi2.42 mi11395+5148439+2738439+2739330(Top 37%)7151(Top 49%)7151(Top 356%)
30K18.64 mi3.11 mi10799+5968055+3848055+3848958(Top 35%)6750(Top 46%)6750(Top 336%)
20M20.00 mi1.36 mi10639+1607916+1397916+1399441(Top 37%)6753(Top 46%)6753(Top 336%)
21M21.00 mi1.00 mi10427+2127761+1557761+1558426(Top 33%)6009(Top 41%)6009(Top 299%)
35K21.75 mi0.75 mi10462-357743+187743+1811960(Top 47%)7662(Top 53%)7662(Top 381%)
23M23.00 mi1.25 mi10454+87676+677676+6711352(Top 44%)7243(Top 50%)7243(Top 361%)
24M24.00 mi1.00 mi10544-907673+37673+312563(Top 49%)7833(Top 54%)7833(Top 390%)
40K24.85 mi0.85 mi10584-407641+327641+3211948(Top 47%)7403(Top 51%)7403(Top 368%)
25.2M25.20 mi0.35 mi10614-307631+107631+1012023(Top 47%)7384(Top 51%)7384(Top 368%)
Finish26.22 mi1.02 mi10848-2347704-737704-7315995(Top 63%)9445(Top 65%)9445(Top 470%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

11792

Males

8639

M40-44

8639

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

12819

Males

9126

M40-44

9126

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

11792

Males

8639

M40-44

8639

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10226

Males

7759

M40-44

7759

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11046

Males

8191

M40-44

8191

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9330

Males

7151

M40-44

7151

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

8958

Males

6750

M40-44

6750

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9441

Males

6753

M40-44

6753

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8426

Males

6009

M40-44

6009

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

11960

Males

7662

M40-44

7662

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11352

Males

7243

M40-44

7243

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

12563

Males

7833

M40-44

7833

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

11948

Males

7403

M40-44

7403

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12023

Males

7384

M40-44

7384

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

15995

Males

9445

M40-44

9445

Passing Analysis

Category:
Athletes Passed
3893*
Passed By
1194
Net Change
+2699
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13547
5K → 10K530125+405#13547#13142
10K → 15K50946+463#13142#12679
15K → 20K7014+697#12679#11982
20K → Half8613+73#11982#11909
Half → 25K52814+514#11909#11395
25K → 30K63943+596#11395#10799
30K → 20M22060+160#10799#10639
20M → 21M24432+212#10639#10427
21M → 35K65100-35#10427#10462
35K → 23M142134+8#10462#10454
23M → 24M75165-90#10454#10544
24M → 40K88*128-40#10544#10584
40K → 25.2M3060-30#10584#10614
25.2M → Finish36270-234#10614#10848
TOTALS3893*1194+2699

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

📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing