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BOSTON MARATHON 2023

Michael Zimmerman

Bib: 4452•M

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M40-44)
#0 / 2241
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:01
Rank: #4294
Start → 5K
21:01 | 6:46/mi
10K· 6.21 mi
41:50
Rank: #4299 (-5)
5K → 10K
20:49 | 6:42/mi
15K· 9.32 mi
1:03:27
Rank: #5058 (-759)
10K → 15K
21:37 | 6:57/mi
20K· 12.43 mi
1:24:20
Rank: #4693 (+365)
15K → 20K
20:53 | 6:43/mi
Half· 13.11 mi
1:28:53
Rank: #4649 (+44)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:45:12
Rank: #4421 (+228)
Half → 25K
16:19 | 6:44/mi
30K· 18.64 mi
2:06:32
Rank: #4193 (+228)
25K → 30K
21:20 | 6:52/mi
20M
2:15:51
Rank: #4076 (+117)
30K → 20M
9:19 | 6:51/mi
21M
2:22:50
Rank: #3879 (+197)
20M → 21M
6:59 | 6:59/mi
35K· 21.75 mi
2:27:48
Rank: #3840 (+39)
21M → 35K
4:58 | 6:38/mi
23M
2:36:19
Rank: #3710 (+130)
35K → 23M
8:31 | 6:48/mi
24M
2:42:56
Rank: #3626 (+84)
23M → 24M
6:37 | 6:37/mi
40K· 24.85 mi
2:48:46
Rank: #3564 (+62)
24M → 40K
5:50 | 6:49/mi
25.2M
2:51:16
Rank: #3533 (+31)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:58:01
Rank: #3497 (+36)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:28:53
Pace6:47 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:08
Pace6:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1321:016:4621:01
6:46
-
10K
6.21 mi10:44:0241:506:4420:49
6:42
-0:04
15K
9.32 mi11:05:391:03:276:4821:37
6:57
+0:15
20K
12.43 mi11:26:321:24:206:4720:53
6:43
-0:14
Half
13.11 mi11:31:051:28:536:474:33
6:40
-0:03
25K
15.53 mi11:47:241:45:126:4616:19
6:44
+0:04
30K
18.64 mi12:08:442:06:326:4721:20
6:52
+0:08
20M
20.00 mi12:18:032:15:516:489:19
6:51
-0:01
21M
21.00 mi12:25:022:22:506:486:59
6:59
+0:08
35K
21.75 mi12:30:002:27:486:484:58
6:38
-0:21
23M
23.00 mi12:38:312:36:196:488:31
6:48
+0:10
24M
24.00 mi12:45:082:42:566:476:37
6:37
-0:11
40K
24.85 mi12:50:582:48:466:475:50
6:49
+0:12
25.2M
25.20 mi12:53:282:51:166:482:30
7:15
+0:26
Finish
26.22 mi13:00:132:58:016:486:45
6:37
-0:38

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

6:37 /mi

Average Pace

6:48 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:55

83% of race

Time at Steady Pace

31:06

17% 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 mi10:23:1321:016:4621:01
6:46
#4294
10K
6.21 mi10:44:0241:506:4420:49
6:42
#4299
15K
9.32 mi11:05:391:03:276:4821:37
6:57
#5058
20K
12.43 mi11:26:321:24:206:4720:53
6:43
#4693
Half
13.11 mi11:31:051:28:536:474:33
6:40
#4649
25K
15.53 mi11:47:241:45:126:4616:19
6:44
#4421
30K
18.64 mi12:08:442:06:326:4721:20
6:52
#4193
20M
20.00 mi12:18:032:15:516:489:19
6:51
#4076
21M
21.00 mi12:25:022:22:506:486:59
6:59
#3879
35K
21.75 mi12:30:002:27:486:484:58
6:38
#3840
23M
23.00 mi12:38:312:36:196:488:31
6:48
#3710
24M
24.00 mi12:45:082:42:566:476:37
6:37
#3626
40K
24.85 mi12:50:582:48:466:475:50
6:49
#3564
25.2M
25.20 mi12:53:282:51:166:482:30
7:15
#3533
Finish
26.22 mi13:00:132:58:016:486:45
6:37
#3497
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4294401240126283(Top 24%)5678(Top 37%)5678(Top 253%)
10K6.21 mi3.10 mi4299-54028-164028-164318(Top 16%)4042(Top 27%)4042(Top 180%)
15K9.32 mi3.11 mi5058-7594694-6664694-6666283(Top 24%)5678(Top 37%)5678(Top 253%)
20K12.43 mi3.11 mi4693+3654379+3154379+3153738(Top 14%)3532(Top 23%)3532(Top 158%)
Half13.11 mi0.68 mi4649+444337+424337+424005(Top 15%)3757(Top 25%)3757(Top 168%)
25K15.53 mi2.42 mi4421+2284135+2024135+2023600(Top 14%)3395(Top 22%)3395(Top 151%)
30K18.64 mi3.11 mi4193+2283936+1993936+1993434(Top 13%)3230(Top 21%)3230(Top 144%)
20M20.00 mi1.36 mi4076+1173827+1093827+1093163(Top 12%)2969(Top 20%)2969(Top 132%)
21M21.00 mi1.00 mi3879+1973651+1763651+1762105(Top 8%)1991(Top 13%)1991(Top 89%)
35K21.75 mi0.75 mi3840+393613+383613+383224(Top 12%)3009(Top 20%)3009(Top 134%)
23M23.00 mi1.25 mi3710+1303496+1173496+1172682(Top 10%)2515(Top 17%)2515(Top 112%)
24M24.00 mi1.00 mi3626+843419+773419+772661(Top 10%)2479(Top 16%)2479(Top 111%)
40K24.85 mi0.85 mi3564+623365+543365+542947(Top 11%)2714(Top 18%)2714(Top 121%)
25.2M25.20 mi0.35 mi3533+313334+313334+312726(Top 10%)2512(Top 17%)2512(Top 112%)
Finish26.22 mi1.02 mi3497+363293+413293+413102(Top 12%)2797(Top 18%)2797(Top 125%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6283

Males

5678

M40-44

5678

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4318

Males

4042

M40-44

4042

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6283

Males

5678

M40-44

5678

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3738

Males

3532

M40-44

3532

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4005

Males

3757

M40-44

3757

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3600

Males

3395

M40-44

3395

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3434

Males

3230

M40-44

3230

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3163

Males

2969

M40-44

2969

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2105

Males

1991

M40-44

1991

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3224

Males

3009

M40-44

3009

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2682

Males

2515

M40-44

2515

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2661

Males

2479

M40-44

2479

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2947

Males

2714

M40-44

2714

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2726

Males

2512

M40-44

2512

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3102

Males

2797

M40-44

2797

Passing Analysis

Category:
Athletes Passed
1938
Passed By
1141
Net Change
+797
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4294
5K → 10K213218-5#4294#4299
10K → 15K15774-759#4299#5058
15K → 20K3716+365#5058#4693
20K → Half506+44#4693#4649
Half → 25K23911+228#4649#4421
25K → 30K24618+228#4421#4193
30K → 20M13013+117#4193#4076
20M → 21M2025+197#4076#3879
21M → 35K5213+39#3879#3840
35K → 23M14010+130#3840#3710
23M → 24M9410+84#3710#3626
24M → 40K7715+62#3626#3564
40K → 25.2M354+31#3564#3533
25.2M → Finish7438+36#3533#3497
TOTALS19381141+797
📊

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