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BOSTON MARATHON 2023

Marek Szachowicz

Bib: 9208•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 50%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:50/mi
24:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:31
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:12:42
↑ 67↓ 78
20K· 12.43 mi
7:56/mi
1:37:20
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:42:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:02:10
↑ 66↓ 880.2%
30K· 18.64 mi
8:19/mi
2:27:59
↑ 181↓ 1480.2%
20M
8:48/mi
2:39:57
↑ 64↓ 500.2%
21M
8:48/mi
2:48:45
↑ 106↓ 241.6%
35K· 21.75 mi
8:16/mi
2:54:56
↑ 17↓ 861.7%
23M
8:34/mi
3:05:40
↑ 23↓ 630.6%
24M
8:18/mi
3:13:58
↓ 821.3%
40K· 24.85 mi
8:47/mi
3:21:29
↓ 200.3%
25.2M
9:49/mi
3:24:52
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
3:33:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:37
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:51:14
Pace8:29 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4724:207:5024:20
7:50
-
10K
6.21 mi11:13:5848:317:4824:11
7:47
-0:03
15K
9.32 mi11:38:091:12:427:4824:11
7:47
0:00
20K
12.43 mi12:02:471:37:207:5024:38
7:56
+0:09
Half
13.11 mi12:08:041:42:377:505:17
7:45
-0:11
25K
15.53 mi12:27:372:02:107:5219:33
8:04
+0:19
30K
18.64 mi12:53:262:27:597:5625:49
8:19
+0:15
20M
20.00 mi13:05:242:39:578:0011:58
8:48
+0:29
21M
21.00 mi13:14:122:48:458:028:48
8:48
0:00
35K
21.75 mi13:20:232:54:568:036:11
8:16
-0:32
23M
23.00 mi13:31:073:05:408:0410:44
8:34
+0:18
24M
24.00 mi13:39:253:13:588:058:18
8:18
-0:16
40K
24.85 mi13:46:563:21:298:067:31
8:47
+0:29
25.2M
25.20 mi13:50:193:24:528:083:23
9:49
+1:02
Finish
26.22 mi13:59:183:33:518:108:59
8:49
-1:00

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

7:45 /mi

Average Pace

8:10 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:37

48% of race

Time at Steady Pace

1:10:35

33% of race

Time at Slower Pace

40:39

19% of race

Average Pace: 8:09 /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 mi10:49:4724:207:5024:20
7:50
#12666
10K
6.21 mi11:13:5848:317:4824:11
7:47
#12775
15K
9.32 mi11:38:091:12:427:4824:11
7:47
#12680
20K
12.43 mi12:02:471:37:207:5024:38
7:56
#12684
Half
13.11 mi12:08:041:42:377:505:17
7:45
#12646
25K
15.53 mi12:27:372:02:107:5219:33
8:04
#12716
30K
18.64 mi12:53:262:27:597:5625:49
8:19
#12809
20M
20.00 mi13:05:242:39:578:0011:58
8:48
#13025
21M
21.00 mi13:14:122:48:458:028:48
8:48
#12943
35K
21.75 mi13:20:232:54:568:036:11
8:16
#12968
23M
23.00 mi13:31:073:05:408:0410:44
8:34
#12980
24M
24.00 mi13:39:253:13:588:058:18
8:18
#12989
40K
24.85 mi13:46:563:21:298:067:31
8:47
#13051
25.2M
25.20 mi13:50:193:24:528:083:23
9:49
#13104
Finish
26.22 mi13:59:183:33:518:108:59
8:49
#13295
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi126669390939012579(Top 47%)9337(Top 62%)9337(Top 455%)
10K6.21 mi3.10 mi12775-1099459-699459-6912978(Top 49%)9545(Top 63%)9545(Top 465%)
15K9.32 mi3.11 mi12680+959390+699390+6912579(Top 47%)9337(Top 62%)9337(Top 455%)
20K12.43 mi3.11 mi12684-49368+229368+2212853(Top 48%)9368(Top 62%)9368(Top 457%)
Half13.11 mi0.68 mi12646+389344+249344+2412211(Top 46%)9165(Top 60%)9165(Top 447%)
25K15.53 mi2.42 mi12716-709356-129356-1213237(Top 50%)9454(Top 62%)9454(Top 461%)
30K18.64 mi3.11 mi12809-939358-29358-213080(Top 49%)9263(Top 61%)9263(Top 451%)
20M20.00 mi1.36 mi13025-2169427-699427-6915431(Top 58%)10174(Top 67%)10174(Top 496%)
21M21.00 mi1.00 mi12943+829371+569371+5612313(Top 46%)8711(Top 57%)8711(Top 425%)
35K21.75 mi0.75 mi12968-259361+109361+1013861(Top 52%)9350(Top 62%)9350(Top 456%)
23M23.00 mi1.25 mi12980-129345+169345+1613642(Top 51%)9202(Top 61%)9202(Top 448%)
24M24.00 mi1.00 mi12989-99333+129333+1213235(Top 50%)8969(Top 59%)8969(Top 437%)
40K24.85 mi0.85 mi13051-629329+49329+415011(Top 56%)9684(Top 64%)9684(Top 472%)
25.2M25.20 mi0.35 mi13104-539344-159344-1516504(Top 62%)10316(Top 68%)10316(Top 503%)
Finish26.22 mi1.02 mi13295-1919404-609404-6017078(Top 64%)10635(Top 70%)10635(Top 518%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12579

Males

9337

M50-54

9337

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

12978

Males

9545

M50-54

9545

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12579

Males

9337

M50-54

9337

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12853

Males

9368

M50-54

9368

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12211

Males

9165

M50-54

9165

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13237

Males

9454

M50-54

9454

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

13080

Males

9263

M50-54

9263

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15431

Males

10174

M50-54

10174

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12313

Males

8711

M50-54

8711

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13861

Males

9350

M50-54

9350

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13642

Males

9202

M50-54

9202

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

13235

Males

8969

M50-54

8969

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15011

Males

9684

M50-54

9684

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16504

Males

10316

M50-54

10316

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

17078

Males

10635

M50-54

10635

Passing Analysis

Category:
Athletes Passed
1466
Passed By
2095
Net Change
-629
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12666
5K → 10K248357-109#12666#12775
10K → 15K260165+95#12775#12680
15K → 20K181185-4#12680#12684
20K → Half5214+38#12684#12646
Half → 25K119189-70#12646#12716
25K → 30K151244-93#12716#12809
30K → 20M50266-216#12809#13025
20M → 21M13957+82#13025#12943
21M → 35K3560-25#12943#12968
35K → 23M92104-12#12968#12980
23M → 24M5766-9#12980#12989
24M → 40K54116-62#12989#13051
40K → 25.2M1568-53#13051#13104
25.2M → Finish13204-191#13104#13295
TOTALS14662095-629
📊

Passing Visuals

Category:
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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