Boston Marathon logo
BOSTON MARATHON 2023

Marcel Mackowiak

Bib: 9360•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 46%
Masters (Masters Men)
#0 / 9891
Top 34%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:58
Rank: #8758
Start → 5K
22:58 | 7:24/mi
10K· 6.21 mi
45:32
Rank: #8637 (+121)
5K → 10K
22:34 | 7:16/mi
15K· 9.32 mi
1:08:34
Rank: #8883 (-246)
10K → 15K
23:02 | 7:25/mi
20K· 12.43 mi
1:32:37
Rank: #9431 (-548)
15K → 20K
24:03 | 7:44/mi
Half· 13.11 mi
1:37:39
Rank: #9414 (+17)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:55:57
Rank: #9339 (+75)
Half → 25K
18:18 | 7:33/mi
30K· 18.64 mi
2:19:51
Rank: #9175 (+164)
25K → 30K
23:54 | 7:42/mi
20M
2:30:18
Rank: #9058 (+117)
30K → 20M
10:27 | 7:41/mi
21M
2:38:24
Rank: #8975 (+83)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:43:58
Rank: #8931 (+44)
21M → 35K
5:34 | 7:26/mi
23M
2:53:29
Rank: #8797 (+134)
35K → 23M
9:31 | 7:36/mi
24M
3:00:51
Rank: #8679 (+118)
23M → 24M
7:22 | 7:22/mi
40K· 24.85 mi
3:07:19
Rank: #8600 (+79)
24M → 40K
6:28 | 7:34/mi
25.2M
3:10:05
Rank: #8556 (+44)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:17:17
Rank: #8384 (+172)
25.2M → Finish
7:12 | 7:04/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
Time1:37:39
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:39:38
Pace7:36 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4922:587:2422:58
7:24
-
10K
6.21 mi11:11:2345:327:2022:34
7:16
-0:08
15K
9.32 mi11:34:251:08:347:2123:02
7:25
+0:09
20K
12.43 mi11:58:281:32:377:2724:03
7:44
+0:19
Half
13.11 mi12:03:301:37:397:275:02
7:23
-0:21
25K
15.53 mi12:21:481:55:577:2818:18
7:33
+0:10
30K
18.64 mi12:45:422:19:517:3023:54
7:42
+0:09
20M
20.00 mi12:56:092:30:187:3110:27
7:41
-0:01
21M
21.00 mi13:04:152:38:247:338:06
8:06
+0:25
35K
21.75 mi13:09:492:43:587:325:34
7:26
-0:40
23M
23.00 mi13:19:202:53:297:339:31
7:36
+0:10
24M
24.00 mi13:26:423:00:517:327:22
7:22
-0:14
40K
24.85 mi13:33:103:07:197:326:28
7:34
+0:12
25.2M
25.20 mi13:35:563:10:057:332:46
8:01
+0:27
Finish
26.22 mi13:43:083:17:177:327:12
7:04
-0:57

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

7:04 /mi

Average Pace

7:32 /mi

Slowest Pace

8:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:25

94% of race

Time at Steady Pace

10:52

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:48:4922:587:2422:58
7:24
#8758
10K
6.21 mi11:11:2345:327:2022:34
7:16
#8637
15K
9.32 mi11:34:251:08:347:2123:02
7:25
#8883
20K
12.43 mi11:58:281:32:377:2724:03
7:44
#9431
Half
13.11 mi12:03:301:37:397:275:02
7:23
#9414
25K
15.53 mi12:21:481:55:577:2818:18
7:33
#9339
30K
18.64 mi12:45:422:19:517:3023:54
7:42
#9175
20M
20.00 mi12:56:092:30:187:3110:27
7:41
#9058
21M
21.00 mi13:04:152:38:247:338:06
8:06
#8975
35K
21.75 mi13:09:492:43:587:325:34
7:26
#8931
23M
23.00 mi13:19:202:53:297:339:31
7:36
#8797
24M
24.00 mi13:26:423:00:517:327:22
7:22
#8679
40K
24.85 mi13:33:103:07:197:326:28
7:34
#8600
25.2M
25.20 mi13:35:563:10:057:332:46
8:01
#8556
Finish
26.22 mi13:43:083:17:177:327:12
7:04
#8384
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi8758745174519438(Top 35%)7826(Top 52%)7826(Top 349%)
10K6.21 mi3.10 mi8637+1217358+937358+938567(Top 32%)7306(Top 48%)7306(Top 326%)
15K9.32 mi3.11 mi8883-2467492-1347492-1349438(Top 35%)7826(Top 52%)7826(Top 349%)
20K12.43 mi3.11 mi9431-5487814-3227814-32211218(Top 42%)8674(Top 57%)8674(Top 387%)
Half13.11 mi0.68 mi9414+177800+147800+149169(Top 34%)7604(Top 50%)7604(Top 339%)
25K15.53 mi2.42 mi9339+757745+557745+559119(Top 34%)7504(Top 49%)7504(Top 335%)
30K18.64 mi3.11 mi9175+1647610+1357610+1358583(Top 32%)7025(Top 46%)7025(Top 313%)
20M20.00 mi1.36 mi9058+1177516+947516+948088(Top 30%)6648(Top 44%)6648(Top 297%)
21M21.00 mi1.00 mi8975+837440+767440+767996(Top 30%)6473(Top 43%)6473(Top 289%)
35K21.75 mi0.75 mi8931+447410+307410+308066(Top 30%)6537(Top 43%)6537(Top 292%)
23M23.00 mi1.25 mi8797+1347298+1127298+1127090(Top 27%)5885(Top 39%)5885(Top 263%)
24M24.00 mi1.00 mi8679+1187205+937205+936830(Top 26%)5619(Top 37%)5619(Top 251%)
40K24.85 mi0.85 mi8600+797143+627143+627096(Top 27%)5689(Top 37%)5689(Top 254%)
25.2M25.20 mi0.35 mi8556+447108+357108+356627(Top 25%)5353(Top 35%)5353(Top 239%)
Finish26.22 mi1.02 mi8384+1726976+1326976+1325620(Top 21%)4674(Top 31%)4674(Top 209%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9438

Males

7826

M40-44

7826

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

8567

Males

7306

M40-44

7306

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9438

Males

7826

M40-44

7826

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11218

Males

8674

M40-44

8674

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9169

Males

7604

M40-44

7604

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9119

Males

7504

M40-44

7504

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8583

Males

7025

M40-44

7025

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8088

Males

6648

M40-44

6648

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

7996

Males

6473

M40-44

6473

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8066

Males

6537

M40-44

6537

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7090

Males

5885

M40-44

5885

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

6830

Males

5619

M40-44

5619

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7096

Males

5689

M40-44

5689

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6627

Males

5353

M40-44

5353

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5620

Males

4674

M40-44

4674

Passing Analysis

Category:
Athletes Passed
1777*
Passed By
1403
Net Change
+374
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8758
5K → 10K317196+121#8758#8637
10K → 15K71317-246#8637#8883
15K → 20K31579-548#8883#9431
20K → Half3013+17#9431#9414
Half → 25K14974+75#9414#9339
25K → 30K250*86+164#9339#9175
30K → 20M14326+117#9175#9058
20M → 21M11532+83#9058#8975
21M → 35K6218+44#8975#8931
35K → 23M15319+134#8931#8797
23M → 24M12911+118#8797#8679
24M → 40K9819+79#8679#8600
40K → 25.2M539+44#8600#8556
25.2M → Finish1764+172#8556#8384
TOTALS1777*1403+374

* 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