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BOSTON MARATHON 2024

Justin Norfleet

Bib: 6445•M

NV

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 42%
Gender (Male)
#0 / 14578
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:29
Rank: #16023
Start → 5K
25:29 | 8:12/mi
10K· 6.21 mi
49:04
Rank: #13613 (+2410)
5K → 10K
23:35 | 7:35/mi
15K· 9.32 mi
1:13:10
Rank: #12910 (+703)
10K → 15K
24:06 | 7:45/mi
20K· 12.43 mi
1:37:49
Rank: #12422 (+488)
15K → 20K
24:39 | 7:56/mi
Half· 13.11 mi
1:43:05
Rank: #12320 (+102)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:02:17
Rank: #11776 (+544)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:27:50
Rank: #11171 (+605)
25K → 30K
25:33 | 8:13/mi
20M
2:39:59
Rank: #11175 (-4)
30K → 20M
12:09 | 8:56/mi
21M
2:48:49
Rank: #10852 (+323)
20M → 21M
8:50 | 8:50/mi
35K· 21.75 mi
2:54:53
Rank: #10755 (+97)
21M → 35K
6:04 | 8:07/mi
23M
3:06:05
Rank: #10719 (+36)
35K → 23M
11:12 | 8:57/mi
24M
3:14:48
Rank: #10691 (+28)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:22:32
Rank: #10675 (+16)
24M → 40K
7:44 | 9:03/mi
25.2M
3:25:43
Rank: #10601 (+74)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:34:18
Rank: #10603 (-2)
25.2M → Finish
8:35 | 8:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:05
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:51:13
Pace8:29 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:30:3125:298:1225:29
8:12
-
10K
6.21 mi10:54:0649:047:5423:35
7:35
-0:37
15K
9.32 mi11:18:121:13:107:5124:06
7:45
+0:10
20K
12.43 mi11:42:511:37:497:5224:39
7:56
+0:11
Half
13.11 mi11:48:071:43:057:525:16
7:43
-0:13
25K
15.53 mi12:07:192:02:177:5219:12
7:55
+0:12
30K
18.64 mi12:32:522:27:507:5625:33
8:13
+0:18
20M
20.00 mi12:45:012:39:598:0012:09
8:56
+0:43
21M
21.00 mi12:53:512:48:498:028:50
8:50
-0:06
35K
21.75 mi12:59:552:54:538:026:04
8:07
-0:43
23M
23.00 mi13:11:073:06:058:0511:12
8:57
+0:50
24M
24.00 mi13:19:503:14:488:078:43
8:43
-0:14
40K
24.85 mi13:27:343:22:328:097:44
9:03
+0:20
25.2M
25.20 mi13:30:453:25:438:103:11
9:14
+0:11
Finish
26.22 mi13:39:203:34:188:118:35
8:25
-0:49

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

7:35 /mi

Average Pace

8:11 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:48

45% of race

Time at Steady Pace

1:05:41

31% of race

Time at Slower Pace

51:49

24% of race

Average Pace: 8:10 /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 mi10:30:3125:298:1225:29
8:12
#16023
10K
6.21 mi10:54:0649:047:5423:35
7:35
#13613
15K
9.32 mi11:18:121:13:107:5124:06
7:45
#12910
20K
12.43 mi11:42:511:37:497:5224:39
7:56
#12422
Half
13.11 mi11:48:071:43:057:525:16
7:43
#12320
25K
15.53 mi12:07:192:02:177:5219:12
7:55
#11776
30K
18.64 mi12:32:522:27:507:5625:33
8:13
#11171
20M
20.00 mi12:45:012:39:598:0012:09
8:56
#11175
21M
21.00 mi12:53:512:48:498:028:50
8:50
#10852
35K
21.75 mi12:59:552:54:538:026:04
8:07
#10755
23M
23.00 mi13:11:073:06:058:0511:12
8:57
#10719
24M
24.00 mi13:19:503:14:488:078:43
8:43
#10691
40K
24.85 mi13:27:343:22:328:097:44
9:03
#10675
25.2M
25.20 mi13:30:453:25:438:103:11
9:14
#10601
Finish
26.22 mi13:39:203:34:188:118:35
8:25
#10603
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi16023104121041211593(Top 45%)8551(Top 59%)8551(Top 176%)
10K6.21 mi3.10 mi13613+24109482+9309482+93010974(Top 43%)8319(Top 57%)8319(Top 172%)
15K9.32 mi3.11 mi12910+7039179+3039179+30311593(Top 45%)8551(Top 59%)8551(Top 176%)
20K12.43 mi3.11 mi12422+4888953+2268953+22611344(Top 44%)8337(Top 57%)8337(Top 172%)
Half13.11 mi0.68 mi12320+1028893+608893+6010699(Top 42%)8028(Top 55%)8028(Top 166%)
25K15.53 mi2.42 mi11776+5448609+2848609+2849655(Top 38%)7322(Top 50%)7322(Top 151%)
30K18.64 mi3.11 mi11171+6058232+3778232+3779133(Top 36%)6836(Top 47%)6836(Top 141%)
20M20.00 mi1.36 mi11175-48179+538179+5311788(Top 46%)7853(Top 54%)7853(Top 162%)
21M21.00 mi1.00 mi10852+3237962+2177962+2177769(Top 30%)5689(Top 39%)5689(Top 117%)
35K21.75 mi0.75 mi10755+977886+767886+768454(Top 33%)6001(Top 41%)6001(Top 124%)
23M23.00 mi1.25 mi10719+367805+817805+8110869(Top 43%)7008(Top 48%)7008(Top 145%)
24M24.00 mi1.00 mi10691+287745+607745+6010661(Top 42%)6875(Top 47%)6875(Top 142%)
40K24.85 mi0.85 mi10675+167682+637682+6311043(Top 43%)6940(Top 48%)6940(Top 143%)
25.2M25.20 mi0.35 mi10601+747626+567626+567604(Top 30%)5128(Top 35%)5128(Top 106%)
Finish26.22 mi1.02 mi10603-27589+377589+3711073(Top 43%)7028(Top 48%)7028(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

11593

Males

8551

M18-39

8551

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

10974

Males

8319

M18-39

8319

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

11593

Males

8551

M18-39

8551

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11344

Males

8337

M18-39

8337

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

10699

Males

8028

M18-39

8028

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

9655

Males

7322

M18-39

7322

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9133

Males

6836

M18-39

6836

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

11788

Males

7853

M18-39

7853

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

7769

Males

5689

M18-39

5689

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8454

Males

6001

M18-39

6001

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

10869

Males

7008

M18-39

7008

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

10661

Males

6875

M18-39

6875

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11043

Males

6940

M18-39

6940

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7604

Males

5128

M18-39

5128

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11073

Males

7028

M18-39

7028

Passing Analysis

Category:
Athletes Passed
6132*
Passed By
712
Net Change
+5420
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16023
5K → 10K24144+2410#16023#13613
10K → 15K72118+703#13613#12910
15K → 20K53143+488#12910#12422
20K → Half11311+102#12422#12320
Half → 25K5528+544#12320#11776
25K → 30K65550+605#11776#11171
30K → 20M140144-4#11171#11175
20M → 21M33916+323#11175#10852
21M → 35K11518+97#10852#10755
35K → 23M167131+36#10755#10719
23M → 24M12294+28#10719#10691
24M → 40K103*87+16#10691#10675
40K → 25.2M762+74#10675#10601
25.2M → Finish8486-2#10601#10603
TOTALS6132*712+5420

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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