Boston Marathon logo
BOSTON MARATHON 2023

Steven Michalski

Bib: 4144•M

WA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M50-54)
#0 / 2052
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:23
Rank: #5407
Start → 5K
21:23 | 6:53/mi
10K· 6.21 mi
42:08
Rank: #4791 (+616)
5K → 10K
20:45 | 6:41/mi
15K· 9.32 mi
1:02:47
Rank: #4376 (+415)
10K → 15K
20:39 | 6:39/mi
20K· 12.43 mi
1:23:53
Rank: #4342 (+34)
15K → 20K
21:06 | 6:47/mi
Half· 13.11 mi
1:28:26
Rank: #4324 (+18)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:45:00
Rank: #4309 (+15)
Half → 25K
16:34 | 6:50/mi
30K· 18.64 mi
2:06:40
Rank: #4269 (+40)
25K → 30K
21:40 | 6:58/mi
20M
2:16:02
Rank: #4163 (+106)
30K → 20M
9:22 | 6:54/mi
21M
2:23:13
Rank: #4055 (+108)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:28:17
Rank: #4034 (+21)
21M → 35K
5:04 | 6:46/mi
23M
2:36:52
Rank: #3927 (+107)
35K → 23M
8:35 | 6:51/mi
24M
2:43:27
Rank: #3820 (+107)
23M → 24M
6:35 | 6:35/mi
40K· 24.85 mi
2:49:12
Rank: #3717 (+103)
24M → 40K
5:45 | 6:44/mi
25.2M
2:51:39
Rank: #3667 (+50)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:57:57
Rank: #3479 (+188)
25.2M → Finish
6:18 | 6:11/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
Time1:28:26
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:29:31
Pace6:50 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3321:236:5321:23
6:53
-
10K
6.21 mi10:44:1842:086:4720:45
6:41
-0:12
15K
9.32 mi11:04:571:02:476:4420:39
6:39
-0:02
20K
12.43 mi11:26:031:23:536:4521:06
6:47
+0:08
Half
13.11 mi11:30:361:28:266:454:33
6:40
-0:07
25K
15.53 mi11:47:101:45:006:4616:34
6:50
+0:10
30K
18.64 mi12:08:502:06:406:4821:40
6:58
+0:08
20M
20.00 mi12:18:122:16:026:489:22
6:54
-0:04
21M
21.00 mi12:25:232:23:136:497:11
7:11
+0:17
35K
21.75 mi12:30:272:28:176:495:04
6:46
-0:25
23M
23.00 mi12:39:022:36:526:498:35
6:51
+0:05
24M
24.00 mi12:45:372:43:276:496:35
6:35
-0:16
40K
24.85 mi12:51:222:49:126:485:45
6:44
+0:09
25.2M
25.20 mi12:53:492:51:396:492:27
7:06
+0:22
Finish
26.22 mi13:00:072:57:576:486:18
6:11
-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

6:11 /mi

Average Pace

6:48 /mi

Slowest Pace

7:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:45

51% of race

Time at Steady Pace

1:27:12

49% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:47 /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 mi10:23:3321:236:5321:23
6:53
#5407
10K
6.21 mi10:44:1842:086:4720:45
6:41
#4791
15K
9.32 mi11:04:571:02:476:4420:39
6:39
#4376
20K
12.43 mi11:26:031:23:536:4521:06
6:47
#4342
Half
13.11 mi11:30:361:28:266:454:33
6:40
#4324
25K
15.53 mi11:47:101:45:006:4616:34
6:50
#4309
30K
18.64 mi12:08:502:06:406:4821:40
6:58
#4269
20M
20.00 mi12:18:122:16:026:489:22
6:54
#4163
21M
21.00 mi12:25:232:23:136:497:11
7:11
#4055
35K
21.75 mi12:30:272:28:176:495:04
6:46
#4034
23M
23.00 mi12:39:022:36:526:498:35
6:51
#3927
24M
24.00 mi12:45:372:43:276:496:35
6:35
#3820
40K
24.85 mi12:51:222:49:126:485:45
6:44
#3717
25.2M
25.20 mi12:53:492:51:396:492:27
7:06
#3667
Finish
26.22 mi13:00:072:57:576:486:18
6:11
#3479
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5407499249923666(Top 14%)3457(Top 23%)3457(Top 168%)
10K6.21 mi3.10 mi4791+6164454+5384454+5384141(Top 16%)3885(Top 26%)3885(Top 189%)
15K9.32 mi3.11 mi4376+4154095+3594095+3593666(Top 14%)3457(Top 23%)3457(Top 168%)
20K12.43 mi3.11 mi4342+344065+304065+304355(Top 16%)4065(Top 27%)4065(Top 198%)
Half13.11 mi0.68 mi4324+184048+174048+174002(Top 15%)3754(Top 25%)3754(Top 183%)
25K15.53 mi2.42 mi4309+154038+104038+104409(Top 17%)4107(Top 27%)4107(Top 200%)
30K18.64 mi3.11 mi4269+404004+344004+344161(Top 16%)3881(Top 26%)3881(Top 189%)
20M20.00 mi1.36 mi4163+1063904+1003904+1003372(Top 13%)3155(Top 21%)3155(Top 154%)
21M21.00 mi1.00 mi4055+1083803+1013803+1013009(Top 11%)2820(Top 19%)2820(Top 137%)
35K21.75 mi0.75 mi4034+213785+183785+183981(Top 15%)3656(Top 24%)3656(Top 178%)
23M23.00 mi1.25 mi3927+1073685+1003685+1002973(Top 11%)2774(Top 18%)2774(Top 135%)
24M24.00 mi1.00 mi3820+1073590+953590+952491(Top 9%)2327(Top 15%)2327(Top 113%)
40K24.85 mi0.85 mi3717+1033494+963494+962474(Top 9%)2294(Top 15%)2294(Top 112%)
25.2M25.20 mi0.35 mi3667+503449+453449+452154(Top 8%)2010(Top 13%)2010(Top 98%)
Finish26.22 mi1.02 mi3479+1883279+1703279+1701232(Top 5%)1173(Top 8%)1173(Top 57%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3666

Males

3457

M50-54

3457

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4141

Males

3885

M50-54

3885

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3666

Males

3457

M50-54

3457

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4355

Males

4065

M50-54

4065

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4002

Males

3754

M50-54

3754

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4409

Males

4107

M50-54

4107

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4161

Males

3881

M50-54

3881

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3372

Males

3155

M50-54

3155

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3009

Males

2820

M50-54

2820

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

3981

Males

3656

M50-54

3656

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2973

Males

2774

M50-54

2774

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2491

Males

2327

M50-54

2327

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2474

Males

2294

M50-54

2294

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2154

Males

2010

M50-54

2010

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1232

Males

1173

M50-54

1173

Passing Analysis

Category:
Athletes Passed
2326
Passed By
398
Net Change
+1928
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5407
5K → 10K64226+616#5407#4791
10K → 15K42914+415#4791#4376
15K → 20K11884+34#4376#4342
20K → Half2810+18#4342#4324
Half → 25K9580+15#4324#4309
25K → 30K13494+40#4309#4269
30K → 20M12620+106#4269#4163
20M → 21M12618+108#4163#4055
21M → 35K4120+21#4055#4034
35K → 23M12417+107#4034#3927
23M → 24M1103+107#3927#3820
24M → 40K1118+103#3820#3717
40K → 25.2M533+50#3717#3667
25.2M → Finish1891+188#3667#3479
TOTALS2326398+1928
📊

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