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BOSTON MARATHON 2023

Nick Stefanko

Bib: 3909•M

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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 9%
Division (M18-39)
#0 / 5285
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:08
Rank: #2161
Start → 5K
20:08 | 6:29/mi
10K· 6.21 mi
39:56
Rank: #2117 (+44)
5K → 10K
19:48 | 6:22/mi
15K· 9.32 mi
59:43
Rank: #2031 (+86)
10K → 15K
19:47 | 6:22/mi
20K· 12.43 mi
1:19:35
Rank: #1949 (+82)
15K → 20K
19:52 | 6:24/mi
Half· 13.11 mi
1:23:51
Rank: #1923 (+26)
20K → Half
4:16 | 6:15/mi
25K· 15.53 mi
1:39:16
Rank: #1845 (+78)
Half → 25K
15:25 | 6:22/mi
30K· 18.64 mi
1:59:19
Rank: #1730 (+115)
25K → 30K
20:03 | 6:27/mi
20M
2:08:12
Rank: #1706 (+24)
30K → 20M
8:53 | 6:32/mi
21M
2:14:44
Rank: #1632 (+74)
20M → 21M
6:32 | 6:32/mi
35K· 21.75 mi
2:19:22
Rank: #1605 (+27)
21M → 35K
4:38 | 6:12/mi
23M
2:27:23
Rank: #1544 (+61)
35K → 23M
8:01 | 6:24/mi
24M
2:33:40
Rank: #1518 (+26)
23M → 24M
6:17 | 6:17/mi
40K· 24.85 mi
2:39:02
Rank: #1473 (+45)
24M → 40K
5:22 | 6:17/mi
25.2M
2:41:19
Rank: #1455 (+18)
40K → 25.2M
2:17 | 6:37/mi
Finish· 26.22 mi
2:47:20
Rank: #1380 (+75)
25.2M → Finish
6:01 | 5:54/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:23:51
Pace6:24 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:23:29
Pace6:22 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3320:086:2920:08
6:29
-
10K
6.21 mi10:41:2139:566:2619:48
6:22
-0:07
15K
9.32 mi11:01:0859:436:2419:47
6:22
0:00
20K
12.43 mi11:21:001:19:356:2419:52
6:24
+0:02
Half
13.11 mi11:25:161:23:516:244:16
6:15
-0:09
25K
15.53 mi11:40:411:39:166:2315:25
6:22
+0:07
30K
18.64 mi12:00:441:59:196:2420:03
6:27
+0:05
20M
20.00 mi12:09:372:08:126:258:53
6:32
+0:05
21M
21.00 mi12:16:092:14:446:256:32
6:32
0:00
35K
21.75 mi12:20:472:19:226:244:38
6:12
-0:20
23M
23.00 mi12:28:482:27:236:248:01
6:24
+0:12
24M
24.00 mi12:35:052:33:406:246:17
6:17
-0:07
40K
24.85 mi12:40:272:39:026:245:22
6:17
0:00
25.2M
25.20 mi12:42:442:41:196:242:17
6:37
+0:20
Finish
26.22 mi12:48:452:47:206:236:01
5:54
-0:43

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

5:54 /mi

Average Pace

6:23 /mi

Slowest Pace

6:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:38

89% of race

Time at Steady Pace

17:42

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:23 /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 mi10:21:3320:086:2920:08
6:29
#2161
10K
6.21 mi10:41:2139:566:2619:48
6:22
#2117
15K
9.32 mi11:01:0859:436:2419:47
6:22
#2031
20K
12.43 mi11:21:001:19:356:2419:52
6:24
#1949
Half
13.11 mi11:25:161:23:516:244:16
6:15
#1923
25K
15.53 mi11:40:411:39:166:2315:25
6:22
#1845
30K
18.64 mi12:00:441:59:196:2420:03
6:27
#1730
20M
20.00 mi12:09:372:08:126:258:53
6:32
#1706
21M
21.00 mi12:16:092:14:446:256:32
6:32
#1632
35K
21.75 mi12:20:472:19:226:244:38
6:12
#1605
23M
23.00 mi12:28:482:27:236:248:01
6:24
#1544
24M
24.00 mi12:35:052:33:406:246:17
6:17
#1518
40K
24.85 mi12:40:272:39:026:245:22
6:17
#1473
25.2M
25.20 mi12:42:442:41:196:242:17
6:37
#1455
Finish
26.22 mi12:48:452:47:206:236:01
5:54
#1380
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2161206020601939(Top 7%)1857(Top 12%)1857(Top 35%)
10K6.21 mi3.10 mi2117+442026+342026+342088(Top 8%)1999(Top 13%)1999(Top 38%)
15K9.32 mi3.11 mi2031+861946+801946+801939(Top 7%)1857(Top 12%)1857(Top 35%)
20K12.43 mi3.11 mi1949+821866+801866+801767(Top 7%)1691(Top 11%)1691(Top 32%)
Half13.11 mi0.68 mi1923+261842+241842+241584(Top 6%)1519(Top 10%)1519(Top 29%)
25K15.53 mi2.42 mi1845+781764+781764+781553(Top 6%)1488(Top 10%)1488(Top 28%)
30K18.64 mi3.11 mi1730+1151654+1101654+1101390(Top 5%)1331(Top 9%)1331(Top 25%)
20M20.00 mi1.36 mi1706+241632+221632+221564(Top 6%)1492(Top 10%)1492(Top 28%)
21M21.00 mi1.00 mi1632+741560+721560+72733(Top 3%)692(Top 5%)692(Top 13%)
35K21.75 mi0.75 mi1605+271534+261534+261225(Top 5%)1168(Top 8%)1168(Top 22%)
23M23.00 mi1.25 mi1544+611474+601474+601112(Top 4%)1052(Top 7%)1052(Top 20%)
24M24.00 mi1.00 mi1518+261449+251449+251300(Top 5%)1230(Top 8%)1230(Top 23%)
40K24.85 mi0.85 mi1473+451406+431406+43840(Top 3%)796(Top 5%)796(Top 15%)
25.2M25.20 mi0.35 mi1455+181388+181388+18723(Top 3%)688(Top 5%)688(Top 13%)
Finish26.22 mi1.02 mi1380+751314+741314+74545(Top 2%)519(Top 3%)519(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1939

Males

1857

M18-39

1857

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2088

Males

1999

M18-39

1999

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1939

Males

1857

M18-39

1857

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1767

Males

1691

M18-39

1691

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1584

Males

1519

M18-39

1519

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1553

Males

1488

M18-39

1488

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1390

Males

1331

M18-39

1331

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1564

Males

1492

M18-39

1492

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

733

Males

692

M18-39

692

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1225

Males

1168

M18-39

1168

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1112

Males

1052

M18-39

1052

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1300

Males

1230

M18-39

1230

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

840

Males

796

M18-39

796

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

723

Males

688

M18-39

688

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

545

Males

519

M18-39

519

Passing Analysis

Category:
Athletes Passed
990
Passed By
209
Net Change
+781
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2161
5K → 10K13692+44#2161#2117
10K → 15K11327+86#2117#2031
15K → 20K10422+82#2031#1949
20K → Half282+26#1949#1923
Half → 25K868+78#1923#1845
25K → 30K12611+115#1845#1730
30K → 20M4016+24#1730#1706
20M → 21M740+74#1706#1632
21M → 35K303+27#1632#1605
35K → 23M698+61#1605#1544
23M → 24M3610+26#1544#1518
24M → 40K516+45#1518#1473
40K → 25.2M213+18#1473#1455
25.2M → Finish761+75#1455#1380
TOTALS990209+781
📊

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