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BOSTON MARATHON 2023

Peter Szewczyk

Bib: 3272•M

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 26%
Gender (Male)
#0 / 15176
Top 39%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:35
Rank: #3070
Start → 5K
20:35 | 6:38/mi
10K· 6.21 mi
40:42
Rank: #2806 (+264)
5K → 10K
20:07 | 6:28/mi
15K· 9.32 mi
1:01:11
Rank: #2932 (-126)
10K → 15K
20:29 | 6:36/mi
20K· 12.43 mi
1:22:03
Rank: #3100 (-168)
15K → 20K
20:52 | 6:43/mi
Half· 13.11 mi
1:26:41
Rank: #3173 (-73)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:43:39
Rank: #3531 (-358)
Half → 25K
16:58 | 7:00/mi
30K· 18.64 mi
2:06:30
Rank: #4182 (-651)
25K → 30K
22:51 | 7:21/mi
20M
2:17:07
Rank: #4641 (-459)
30K → 20M
10:37 | 7:49/mi
21M
2:25:33
Rank: #4963 (-322)
20M → 21M
8:26 | 8:26/mi
35K· 21.75 mi
2:31:30
Rank: #5170 (-207)
21M → 35K
5:57 | 7:57/mi
23M
2:43:23
Rank: #5837 (-667)
35K → 23M
11:53 | 9:29/mi
24M
2:51:33
Rank: #6014 (-177)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
2:58:59
Rank: #6235 (-221)
24M → 40K
7:26 | 8:42/mi
25.2M
3:02:22
Rank: #6381 (-146)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:11:46
Rank: #6842 (-461)
25.2M → Finish
9:24 | 9:13/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:41
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:45:05
Pace8:01 /mi
📊Positive Split: 21.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5620:356:3820:35
6:38
-
10K
6.21 mi10:42:0340:426:3320:07
6:28
-0:10
15K
9.32 mi11:02:321:01:116:3420:29
6:36
+0:08
20K
12.43 mi11:23:241:22:036:3620:52
6:43
+0:07
Half
13.11 mi11:28:021:26:416:374:38
6:47
+0:04
25K
15.53 mi11:45:001:43:396:4016:58
7:00
+0:13
30K
18.64 mi12:07:512:06:306:4722:51
7:21
+0:21
20M
20.00 mi12:18:282:17:076:5110:37
7:49
+0:28
21M
21.00 mi12:26:542:25:336:568:26
8:26
+0:37
35K
21.75 mi12:32:512:31:306:585:57
7:57
-0:29
23M
23.00 mi12:44:442:43:237:0611:53
9:29
+1:32
24M
24.00 mi12:52:542:51:337:098:10
8:10
-1:19
40K
24.85 mi13:00:202:58:597:127:26
8:42
+0:32
25.2M
25.20 mi13:03:433:02:227:143:23
9:49
+1:07
Finish
26.22 mi13:13:073:11:467:199:24
9:13
-0:36

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

6:28 /mi

Average Pace

7:19 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:39

54% of race

Time at Steady Pace

47:35

25% of race

Time at Slower Pace

40:32

21% of race

Average Pace: 7:19 /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 mi10:21:5620:356:3820:35
6:38
#3070
10K
6.21 mi10:42:0340:426:3320:07
6:28
#2806
15K
9.32 mi11:02:321:01:116:3420:29
6:36
#2932
20K
12.43 mi11:23:241:22:036:3620:52
6:43
#3100
Half
13.11 mi11:28:021:26:416:374:38
6:47
#3173
25K
15.53 mi11:45:001:43:396:4016:58
7:00
#3531
30K
18.64 mi12:07:512:06:306:4722:51
7:21
#4182
20M
20.00 mi12:18:282:17:076:5110:37
7:49
#4641
21M
21.00 mi12:26:542:25:336:568:26
8:26
#4963
35K
21.75 mi12:32:512:31:306:585:57
7:57
#5170
23M
23.00 mi12:44:442:43:237:0611:53
9:29
#5837
24M
24.00 mi12:52:542:51:337:098:10
8:10
#6014
40K
24.85 mi13:00:202:58:597:127:26
8:42
#6235
25.2M
25.20 mi13:03:433:02:227:143:23
9:49
#6381
Finish
26.22 mi13:13:073:11:467:199:24
9:13
#6842
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3070291029103246(Top 12%)3087(Top 20%)3087(Top 58%)
10K6.21 mi3.10 mi2806+2642676+2342676+2342663(Top 10%)2547(Top 17%)2547(Top 48%)
15K9.32 mi3.11 mi2932-1262796-1202796-1203246(Top 12%)3087(Top 20%)3087(Top 58%)
20K12.43 mi3.11 mi3100-1682956-1602956-1603710(Top 14%)3509(Top 23%)3509(Top 66%)
Half13.11 mi0.68 mi3173-733023-673023-675247(Top 20%)4857(Top 32%)4857(Top 92%)
25K15.53 mi2.42 mi3531-3583349-3263349-3265568(Top 21%)5123(Top 34%)5123(Top 97%)
30K18.64 mi3.11 mi4182-6513929-5803929-5806340(Top 24%)5618(Top 37%)5618(Top 106%)
20M20.00 mi1.36 mi4641-4594328-3994328-3998919(Top 34%)7133(Top 47%)7133(Top 135%)
21M21.00 mi1.00 mi4963-3224597-2694597-26910031(Top 38%)7610(Top 50%)7610(Top 144%)
35K21.75 mi0.75 mi5170-2074766-1694766-16911709(Top 44%)8409(Top 55%)8409(Top 159%)
23M23.00 mi1.25 mi5837-6675297-5315297-53118279(Top 69%)11246(Top 74%)11246(Top 213%)
24M24.00 mi1.00 mi6014-1775418-1215418-12112322(Top 46%)8533(Top 56%)8533(Top 161%)
40K24.85 mi0.85 mi6235-2215578-1605578-16014432(Top 54%)9417(Top 62%)9417(Top 178%)
25.2M25.20 mi0.35 mi6381-1465682-1045682-10416480(Top 62%)10292(Top 68%)10292(Top 195%)
Finish26.22 mi1.02 mi6842-4615982-3005982-30018992(Top 71%)11529(Top 76%)11529(Top 218%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3246

Males

3087

M18-39

3087

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2663

Males

2547

M18-39

2547

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3246

Males

3087

M18-39

3087

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3710

Males

3509

M18-39

3509

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5247

Males

4857

M18-39

4857

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5568

Males

5123

M18-39

5123

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6340

Males

5618

M18-39

5618

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

8919

Males

7133

M18-39

7133

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10031

Males

7610

M18-39

7610

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11709

Males

8409

M18-39

8409

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18279

Males

11246

M18-39

11246

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12322

Males

8533

M18-39

8533

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14432

Males

9417

M18-39

9417

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16480

Males

10292

M18-39

10292

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

18992

Males

11529

M18-39

11529

Passing Analysis

Category:
Athletes Passed
518
Passed By
4290
Net Change
-3772
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3070
5K → 10K32460+264#3070#2806
10K → 15K57183-126#2806#2932
15K → 20K31199-168#2932#3100
20K → Half376-73#3100#3173
Half → 25K12370-358#3173#3531
25K → 30K14665-651#3531#4182
30K → 20M10469-459#4182#4641
20M → 21M9331-322#4641#4963
21M → 35K9216-207#4963#5170
35K → 23M7674-667#5170#5837
23M → 24M23200-177#5837#6014
24M → 40K12233-221#6014#6235
40K → 25.2M4150-146#6235#6381
25.2M → Finish3464-461#6381#6842
TOTALS5184290-3772
📊

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