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BOSTON MARATHON 2023

Leszek Stachowiak

Bib: 27753•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
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
9:32/mi
29:38
↑ 97↓ 3451.5%
10K· 6.21 mi
9:27/mi
59:00
↑ 79↓ 1380.4%
15K· 9.32 mi
9:40/mi
1:29:03
↑ 67↓ 78
20K· 12.43 mi
9:42/mi
1:59:11
↑ 106↓ 860.1%
Half· 13.11 mi
9:32/mi
2:05:41
↑ 19↓ 370.5%
25K· 15.53 mi
10:00/mi
2:29:56
↑ 66↓ 880.2%
30K· 18.64 mi
10:15/mi
3:01:46
↑ 181↓ 1480.2%
20M
10:08/mi
3:15:32
↑ 64↓ 500.2%
21M
10:39/mi
3:26:11
↑ 106↓ 241.6%
35K· 21.75 mi
9:44/mi
3:33:28
↑ 17↓ 861.7%
23M
10:05/mi
3:46:05
↑ 23↓ 630.6%
24M
9:58/mi
3:56:03
↓ 821.3%
40K· 24.85 mi
10:18/mi
4:04:51
↓ 200.3%
25.2M
10:47/mi
4:08:34
↑ 13↓ 160.2%
Finish· 26.22 mi
9:47/mi
4:18:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:41
Pace9:35 /mi
2nd Half
Distance13.11 mi
Time2:12:51
Pace10:08 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:5729:389:3229:38
9:32
-
10K
6.21 mi12:16:1959:009:3029:22
9:27
-0:05
15K
9.32 mi12:46:221:29:039:3330:03
9:40
+0:13
20K
12.43 mi13:16:301:59:119:3530:08
9:42
+0:02
Half
13.11 mi13:23:002:05:419:356:30
9:32
-0:10
25K
15.53 mi13:47:152:29:569:3924:15
10:00
+0:28
30K
18.64 mi14:19:053:01:469:4531:50
10:15
+0:15
20M
20.00 mi14:32:513:15:329:4713:46
10:08
-0:07
21M
21.00 mi14:43:303:26:119:4910:39
10:39
+0:31
35K
21.75 mi14:50:473:33:289:497:17
9:44
-0:55
23M
23.00 mi15:03:243:46:059:5012:37
10:05
+0:21
24M
24.00 mi15:13:223:56:039:509:58
9:58
-0:07
40K
24.85 mi15:22:104:04:519:518:48
10:18
+0:20
25.2M
25.20 mi15:25:534:08:349:523:43
10:47
+0:29
Finish
26.22 mi15:35:514:18:329:529:58
9:47
-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

9:27 /mi

Average Pace

9:52 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:04:10

94% of race

Time at Steady Pace

14:22

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:52 /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 mi11:46:5729:389:3229:38
9:32
#22210
10K
6.21 mi12:16:1959:009:3029:22
9:27
#22312
15K
9.32 mi12:46:221:29:039:3330:03
9:40
#22467
20K
12.43 mi13:16:301:59:119:3530:08
9:42
#22357
Half
13.11 mi13:23:002:05:419:356:30
9:32
#22363
25K
15.53 mi13:47:152:29:569:3924:15
10:00
#22351
30K
18.64 mi14:19:053:01:469:4531:50
10:15
#22215
20M
20.00 mi14:32:513:15:329:4713:46
10:08
#22097
21M
21.00 mi14:43:303:26:119:4910:39
10:39
#21972
35K
21.75 mi14:50:473:33:289:497:17
9:44
#21934
23M
23.00 mi15:03:243:46:059:5012:37
10:05
#21835
24M
24.00 mi15:13:223:56:039:509:58
9:58
#21787
40K
24.85 mi15:22:104:04:519:518:48
10:18
#21737
25.2M
25.20 mi15:25:534:08:349:523:43
10:47
#21712
Finish
26.22 mi15:35:514:18:329:529:58
9:47
#21688
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi22210132051320522723(Top 85%)13502(Top 89%)13502(Top 950%)
10K6.21 mi3.10 mi22312-10213285-8013285-8022367(Top 84%)13330(Top 88%)13330(Top 937%)
15K9.32 mi3.11 mi22467-15513371-8613371-8622723(Top 85%)13502(Top 89%)13502(Top 950%)
20K12.43 mi3.11 mi22357+11013326+4513326+4522161(Top 83%)13249(Top 87%)13249(Top 932%)
Half13.11 mi0.68 mi22363-613332-613332-622154(Top 83%)13264(Top 87%)13264(Top 933%)
25K15.53 mi2.42 mi22351+1213302+3013302+3022223(Top 83%)13242(Top 87%)13242(Top 931%)
30K18.64 mi3.11 mi22215+13613238+6413238+6421643(Top 81%)12915(Top 85%)12915(Top 908%)
20M20.00 mi1.36 mi22097+11813173+6513173+6520823(Top 78%)12490(Top 82%)12490(Top 878%)
21M21.00 mi1.00 mi21972+12513113+6013113+6020007(Top 75%)12054(Top 79%)12054(Top 848%)
35K21.75 mi0.75 mi21934+3813096+1713096+1720560(Top 77%)12289(Top 81%)12289(Top 864%)
23M23.00 mi1.25 mi21835+9913031+6513031+6520210(Top 76%)12107(Top 80%)12107(Top 851%)
24M24.00 mi1.00 mi21787+4812996+3512996+3520702(Top 78%)12295(Top 81%)12295(Top 865%)
40K24.85 mi0.85 mi21737+5012959+3712959+3720710(Top 78%)12245(Top 81%)12245(Top 861%)
25.2M25.20 mi0.35 mi21712+2512945+1412945+1419902(Top 75%)11881(Top 78%)11881(Top 836%)
Finish26.22 mi1.02 mi21688+2412927+1812927+1821075(Top 79%)12456(Top 82%)12456(Top 876%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

22723

Males

13502

M55-59

13502

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22367

Males

13330

M55-59

13330

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

22723

Males

13502

M55-59

13502

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

22161

Males

13249

M55-59

13249

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

22154

Males

13264

M55-59

13264

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

22223

Males

13242

M55-59

13242

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

21643

Males

12915

M55-59

12915

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

20823

Males

12490

M55-59

12490

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

20007

Males

12054

M55-59

12054

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20560

Males

12289

M55-59

12289

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

20210

Males

12107

M55-59

12107

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

20702

Males

12295

M55-59

12295

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20710

Males

12245

M55-59

12245

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19902

Males

11881

M55-59

11881

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

21075

Males

12456

M55-59

12456

Passing Analysis

Category:
Athletes Passed
1416
Passed By
894
Net Change
+522
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22210
5K → 10K191293-102#22210#22312
10K → 15K100255-155#22312#22467
15K → 20K18171+110#22467#22357
20K → Half2228-6#22357#22363
Half → 25K10795+12#22363#22351
25K → 30K19054+136#22351#22215
30K → 20M13517+118#22215#22097
20M → 21M1327+125#22097#21972
21M → 35K446+38#21972#21934
35K → 23M11920+99#21934#21835
23M → 24M6113+48#21835#21787
24M → 40K6313+50#21787#21737
40K → 25.2M327+25#21737#21712
25.2M → Finish3915+24#21712#21688
TOTALS1416894+522
📊

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