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BOSTON MARATHON 2023

Nathan Letavec

Bib: 749•M

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 6%
Division (M18-39)
#0 / 5285
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:10
Rank: #452
Start → 5K
18:10 | 5:51/mi
10K· 6.21 mi
36:19
Rank: #461 (-9)
5K → 10K
18:10 | 5:51/mi
15K· 9.32 mi
54:48
Rank: #507 (-46)
10K → 15K
18:29 | 5:57/mi
20K· 12.43 mi
1:14:07
Rank: #606 (-99)
15K → 20K
19:19 | 6:13/mi
Half· 13.11 mi
1:18:10
Rank: #607 (-1)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:32:53
Rank: #596 (+11)
Half → 25K
14:43 | 6:04/mi
30K· 18.64 mi
1:52:43
Rank: #669 (-73)
25K → 30K
19:50 | 6:23/mi
20M
2:01:58
Rank: #741 (-72)
30K → 20M
9:15 | 6:48/mi
21M
2:10:02
Rank: #894 (-153)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:14:59
Rank: #932 (-38)
21M → 35K
4:57 | 6:37/mi
23M
2:23:22
Rank: #954 (-22)
35K → 23M
8:23 | 6:42/mi
24M
2:29:51
Rank: #971 (-17)
23M → 24M
6:29 | 6:29/mi
40K· 24.85 mi
2:35:30
Rank: #983 (-12)
24M → 40K
5:39 | 6:36/mi
25.2M
2:37:58
Rank: #996 (-13)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:44:33
Rank: #1020 (-24)
25.2M → Finish
6:35 | 6:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:10
Pace5:58 /mi
2nd Half
Distance13.11 mi
Time1:26:23
Pace6:35 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1418:105:5118:10
5:51
-
10K
6.21 mi10:36:2336:195:5118:10
5:51
0:00
15K
9.32 mi10:54:5254:485:5318:29
5:57
+0:06
20K
12.43 mi11:14:111:14:075:5819:19
6:13
+0:16
Half
13.11 mi11:18:141:18:105:584:03
5:56
-0:17
25K
15.53 mi11:32:571:32:535:5914:43
6:04
+0:08
30K
18.64 mi11:52:471:52:436:0319:50
6:23
+0:19
20M
20.00 mi12:02:022:01:586:069:15
6:48
+0:25
21M
21.00 mi12:10:062:10:026:128:04
8:04
+1:16
35K
21.75 mi12:15:032:14:596:124:57
6:37
-1:27
23M
23.00 mi12:23:262:23:226:148:23
6:42
+0:05
24M
24.00 mi12:29:552:29:516:156:29
6:29
-0:13
40K
24.85 mi12:35:342:35:306:155:39
6:36
+0:07
25.2M
25.20 mi12:38:022:37:586:162:28
7:09
+0:33
Finish
26.22 mi12:44:372:44:336:176:35
6:28
-0:41

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

5:51 /mi

Average Pace

6:17 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:13:34

45% of race

Time at Steady Pace

1:11:12

43% of race

Time at Slower Pace

19:47

12% of race

Average Pace: 6:17 /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 mi10:18:1418:105:5118:10
5:51
#452
10K
6.21 mi10:36:2336:195:5118:10
5:51
#461
15K
9.32 mi10:54:5254:485:5318:29
5:57
#507
20K
12.43 mi11:14:111:14:075:5819:19
6:13
#606
Half
13.11 mi11:18:141:18:105:584:03
5:56
#607
25K
15.53 mi11:32:571:32:535:5914:43
6:04
#596
30K
18.64 mi11:52:471:52:436:0319:50
6:23
#669
20M
20.00 mi12:02:022:01:586:069:15
6:48
#741
21M
21.00 mi12:10:062:10:026:128:04
8:04
#894
35K
21.75 mi12:15:032:14:596:124:57
6:37
#932
23M
23.00 mi12:23:262:23:226:148:23
6:42
#954
24M
24.00 mi12:29:552:29:516:156:29
6:29
#971
40K
24.85 mi12:35:342:35:306:155:39
6:36
#983
25.2M
25.20 mi12:38:022:37:586:162:28
7:09
#996
Finish
26.22 mi12:44:372:44:336:176:35
6:28
#1020
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 mi452417417609(Top 2%)566(Top 4%)566(Top 11%)
10K6.21 mi3.10 mi461-9426-9426-9498(Top 2%)457(Top 3%)457(Top 9%)
15K9.32 mi3.11 mi507-46466-40466-40609(Top 2%)566(Top 4%)566(Top 11%)
20K12.43 mi3.11 mi606-99563-97563-971098(Top 4%)1047(Top 7%)1047(Top 20%)
Half13.11 mi0.68 mi607-1564-1564-1636(Top 2%)598(Top 4%)598(Top 11%)
25K15.53 mi2.42 mi596+11555+9555+9673(Top 3%)632(Top 4%)632(Top 12%)
30K18.64 mi3.11 mi669-73628-73628-731160(Top 4%)1105(Top 7%)1105(Top 21%)
20M20.00 mi1.36 mi741-72699-71699-712825(Top 11%)2660(Top 18%)2660(Top 50%)
21M21.00 mi1.00 mi894-153847-148847-1487730(Top 29%)6313(Top 42%)6313(Top 119%)
35K21.75 mi0.75 mi932-38885-38885-383029(Top 11%)2831(Top 19%)2831(Top 54%)
23M23.00 mi1.25 mi954-22907-22907-222142(Top 8%)2022(Top 13%)2022(Top 38%)
24M24.00 mi1.00 mi971-17924-17924-171999(Top 8%)1874(Top 12%)1874(Top 35%)
40K24.85 mi0.85 mi983-12934-10934-101923(Top 7%)1805(Top 12%)1805(Top 34%)
25.2M25.20 mi0.35 mi996-13947-13947-132229(Top 8%)2062(Top 14%)2062(Top 39%)
Finish26.22 mi1.02 mi1020-24971-24971-242271(Top 9%)2099(Top 14%)2099(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

609

Males

566

M18-39

566

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

498

Males

457

M18-39

457

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

609

Males

566

M18-39

566

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1098

Males

1047

M18-39

1047

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

636

Males

598

M18-39

598

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

673

Males

632

M18-39

632

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1160

Males

1105

M18-39

1105

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2825

Males

2660

M18-39

2660

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7730

Males

6313

M18-39

6313

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3029

Males

2831

M18-39

2831

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2142

Males

2022

M18-39

2022

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

1999

Males

1874

M18-39

1874

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1923

Males

1805

M18-39

1805

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2229

Males

2062

M18-39

2062

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2271

Males

2099

M18-39

2099

Passing Analysis

Category:
Athletes Passed
99
Passed By
667
Net Change
-568
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#452
5K → 10K2029-9#452#461
10K → 15K551-46#461#507
15K → 20K5104-99#507#606
20K → Half01-1#606#607
Half → 25K198+11#607#596
25K → 30K780-73#596#669
30K → 20M173-72#669#741
20M → 21M1154-153#741#894
21M → 35K341-38#894#932
35K → 23M830-22#932#954
23M → 24M1128-17#954#971
24M → 40K820-12#971#983
40K → 25.2M215-13#983#996
25.2M → Finish933-24#996#1020
TOTALS99667-568
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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