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BOSTON MARATHON 2023

Nathaniel Lukefahr

Bib: 7118•M

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Overall
#0 / 26622
Top 33%
Gender (Male)
#0 / 15176
Top 48%
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
22:06
Rank: #6958
Start → 5K
7:07/mi
22:06 split
10K· 6.21 mi
44:16
Rank: #7265 (-307)
5K → 10K
7:08/mi
22:10 split
15K· 9.32 mi
1:06:28
Rank: #7303 (-38)
10K → 15K
7:09/mi
22:12 split
20K· 12.43 mi
1:28:42
Rank: #7144 (+159)
15K → 20K
7:09/mi
22:14 split
Half· 13.11 mi
1:33:24
Rank: #7086 (+58)
20K → Half
6:53/mi
4:42 split
25K· 15.53 mi
1:51:15
Rank: #7140 (-54)
Half → 25K
7:22/mi
17:51 split
30K· 18.64 mi
2:15:17
Rank: #7343 (-203)
25K → 30K
7:44/mi
24:02 split
20M
2:26:08
Rank: #7481 (-138)
30K → 20M
7:59/mi
10:51 split
21M
2:34:47
Rank: #7663 (-182)
20M → 21M
8:39/mi
8:39 split
35K· 21.75 mi
2:40:36
Rank: #7733 (-70)
21M → 35K
7:46/mi
5:49 split
23M
2:51:12
Rank: #8035 (-302)
35K → 23M
8:28/mi
10:36 split
24M
2:59:28
Rank: #8229 (-194)
23M → 24M
8:16/mi
8:16 split
40K· 24.85 mi
3:06:38
Rank: #8381 (-152)
24M → 40K
8:23/mi
7:10 split
25.2M
3:10:05
Rank: #8561 (-180)
40K → 25.2M
10:00/mi
3:27 split
Finish· 26.22 mi
3:18:39
Rank: #8785 (-224)
25.2M → Finish
8:24/mi
8:34 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:24
Pace7:07 /mi
2nd Half
Distance13.11 mi
Time1:45:15
Pace8:02 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:0222:067:0722:06
7:07
-
10K
6.21 mi10:49:1244:167:0722:10
7:08
+0:01
15K
9.32 mi11:11:241:06:287:0822:12
7:09
+0:01
20K
12.43 mi11:33:381:28:427:0822:14
7:09
0:00
Half
13.11 mi11:38:201:33:247:074:42
6:53
-0:16
25K
15.53 mi11:56:111:51:157:1017:51
7:22
+0:29
30K
18.64 mi12:20:132:15:177:1524:02
7:44
+0:22
20M
20.00 mi12:31:042:26:087:1810:51
7:59
+0:15
21M
21.00 mi12:39:432:34:477:228:39
8:39
+0:40
35K
21.75 mi12:45:322:40:367:235:49
7:46
-0:53
23M
23.00 mi12:56:082:51:127:2710:36
8:28
+0:42
24M
24.00 mi13:04:242:59:287:298:16
8:16
-0:12
40K
24.85 mi13:11:343:06:387:317:10
8:23
+0:07
25.2M
25.20 mi13:15:013:10:057:333:27
10:00
+1:37
Finish
26.22 mi13:23:353:18:397:358:34
8:24
-1:36

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

6:53 /mi

Average Pace

7:35 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:24

47% of race

Time at Steady Pace

58:33

29% of race

Time at Slower Pace

46:42

24% of race

Average Pace: 7:35 /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 mi10:27:0222:067:0722:06
7:07
#6958
10K
6.21 mi10:49:1244:167:0722:10
7:08
#7265
15K
9.32 mi11:11:241:06:287:0822:12
7:09
#7303
20K
12.43 mi11:33:381:28:427:0822:14
7:09
#7144
Half
13.11 mi11:38:201:33:247:074:42
6:53
#7086
25K
15.53 mi11:56:111:51:157:1017:51
7:22
#7140
30K
18.64 mi12:20:132:15:177:1524:02
7:44
#7343
20M
20.00 mi12:31:042:26:087:1810:51
7:59
#7481
21M
21.00 mi12:39:432:34:477:228:39
8:39
#7663
35K
21.75 mi12:45:322:40:367:235:49
7:46
#7733
23M
23.00 mi12:56:082:51:127:2710:36
8:28
#8035
24M
24.00 mi13:04:242:59:287:298:16
8:16
#8229
40K
24.85 mi13:11:343:06:387:317:10
8:23
#8381
25.2M
25.20 mi13:15:013:10:057:333:27
10:00
#8561
Finish
26.22 mi13:23:353:18:397:358:34
8:24
#8785
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6958623962397443(Top 28%)6560(Top 43%)6560(Top 124%)
10K6.21 mi3.10 mi7265-3076453-2146453-2147656(Top 29%)6707(Top 44%)6707(Top 127%)
15K9.32 mi3.11 mi7303-386480-276480-277443(Top 28%)6560(Top 43%)6560(Top 124%)
20K12.43 mi3.11 mi7144+1596355+1256355+1256843(Top 26%)6096(Top 40%)6096(Top 115%)
Half13.11 mi0.68 mi7086+586312+436312+435960(Top 22%)5469(Top 36%)5469(Top 103%)
25K15.53 mi2.42 mi7140-546336-246336-247708(Top 29%)6619(Top 44%)6619(Top 125%)
30K18.64 mi3.11 mi7343-2036459-1236459-1238892(Top 33%)7217(Top 48%)7217(Top 137%)
20M20.00 mi1.36 mi7481-1386523-646523-6410123(Top 38%)7811(Top 51%)7811(Top 148%)
21M21.00 mi1.00 mi7663-1826621-986621-9811325(Top 43%)8258(Top 54%)8258(Top 156%)
35K21.75 mi0.75 mi7733-706663-426663-4210415(Top 39%)7820(Top 52%)7820(Top 148%)
23M23.00 mi1.25 mi8035-3026826-1636826-16312965(Top 49%)8892(Top 59%)8892(Top 168%)
24M24.00 mi1.00 mi8229-1946930-1046930-10413013(Top 49%)8848(Top 58%)8848(Top 167%)
40K24.85 mi0.85 mi8381-1527003-737003-7312553(Top 47%)8561(Top 56%)8561(Top 162%)
25.2M25.20 mi0.35 mi8561-1807113-1107113-11017308(Top 65%)10661(Top 70%)10661(Top 202%)
Finish26.22 mi1.02 mi8785-2247218-1057218-10514746(Top 55%)9597(Top 63%)9597(Top 182%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7443

Males

6560

M18-39

6560

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

7656

Males

6707

M18-39

6707

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7443

Males

6560

M18-39

6560

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

6843

Males

6096

M18-39

6096

20K→Half

12.4 - 13.1 mi

Top 22%
×2story building
+19ft-37ft

Overall

5960

Males

5469

M18-39

5469

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

7708

Males

6619

M18-39

6619

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

8892

Males

7217

M18-39

7217

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10123

Males

7811

M18-39

7811

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

11325

Males

8258

M18-39

8258

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10415

Males

7820

M18-39

7820

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

12965

Males

8892

M18-39

8892

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13013

Males

8848

M18-39

8848

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12553

Males

8561

M18-39

8561

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17308

Males

10661

M18-39

10661

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

14746

Males

9597

M18-39

9597

Passing Analysis

Category:
Athletes Passed
772
Passed By
2599
Net Change
-1827
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6958
5K → 10K86393-307#6958#7265
10K → 15K117155-38#7265#7303
15K → 20K19536+159#7303#7144
20K → Half591+58#7144#7086
Half → 25K78132-54#7086#7140
25K → 30K56259-203#7140#7343
30K → 20M39177-138#7343#7481
20M → 21M21203-182#7481#7663
21M → 35K2090-70#7663#7733
35K → 23M28330-302#7733#8035
23M → 24M27221-194#8035#8229
24M → 40K23175-152#8229#8381
40K → 25.2M6186-180#8381#8561
25.2M → Finish17241-224#8561#8785
TOTALS7722599-1827
📊

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