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BOSTON MARATHON 2024

Harold Nerrow

Bib: 27361•M

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 43%
Gender (Male)
#0 / 14578
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:15/mi
25:37
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
50:10
↑ 79↓ 1380.4%
15K· 9.32 mi
7:43/mi
1:14:09
↑ 67↓ 78
20K· 12.43 mi
7:38/mi
1:37:51
↑ 106↓ 860.1%
Half· 13.11 mi
7:29/mi
1:42:57
↑ 19↓ 370.5%
25K· 15.53 mi
7:38/mi
2:01:28
↑ 66↓ 880.2%
30K· 18.64 mi
7:48/mi
2:25:41
↑ 181↓ 1480.2%
20M
7:57/mi
2:36:29
↑ 64↓ 500.2%
21M
8:34/mi
2:45:03
↑ 106↓ 241.6%
35K· 21.75 mi
8:29/mi
2:51:24
↑ 17↓ 861.7%
23M
9:16/mi
3:03:00
↑ 23↓ 630.6%
24M
10:14/mi
3:13:14
↓ 821.3%
40K· 24.85 mi
11:20/mi
3:22:55
↓ 200.3%
25.2M
11:39/mi
3:26:56
↑ 13↓ 160.2%
Finish· 26.22 mi
9:19/mi
3:36:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:57
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:53:29
Pace8:39 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:2925:378:1525:37
8:15
-
10K
6.21 mi12:08:0250:108:0424:33
7:54
-0:21
15K
9.32 mi12:32:011:14:097:5723:59
7:43
-0:11
20K
12.43 mi12:55:431:37:517:5223:42
7:38
-0:05
Half
13.11 mi13:00:491:42:577:515:06
7:29
-0:09
25K
15.53 mi13:19:202:01:287:4918:31
7:38
+0:09
30K
18.64 mi13:43:332:25:417:4924:13
7:48
+0:10
20M
20.00 mi13:54:212:36:297:4910:48
7:57
+0:09
21M
21.00 mi14:02:552:45:037:528:34
8:34
+0:37
35K
21.75 mi14:09:162:51:247:536:21
8:29
-0:05
23M
23.00 mi14:20:523:03:007:5711:36
9:16
+0:47
24M
24.00 mi14:31:063:13:148:0310:14
10:14
+0:58
40K
24.85 mi14:40:473:22:558:109:41
11:20
+1:06
25.2M
25.20 mi14:44:483:26:568:134:01
11:39
+0:19
Finish
26.22 mi14:54:183:36:268:169:30
9:19
-2:20

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

7:29 /mi

Average Pace

8:16 /mi

Slowest Pace

11:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:06

2% of race

Time at Steady Pace

2:46:18

77% of race

Time at Slower Pace

45:02

21% of race

Average Pace: 8:15 /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 mi11:43:2925:378:1525:37
8:15
#16291
10K
6.21 mi12:08:0250:108:0424:33
7:54
#14931
15K
9.32 mi12:32:011:14:097:5723:59
7:43
#13736
20K
12.43 mi12:55:431:37:517:5223:42
7:38
#12444
Half
13.11 mi13:00:491:42:577:515:06
7:29
#12236
25K
15.53 mi13:19:202:01:287:4918:31
7:38
#11421
30K
18.64 mi13:43:332:25:417:4924:13
7:48
#10353
20M
20.00 mi13:54:212:36:297:4910:48
7:57
#9952
21M
21.00 mi14:02:552:45:037:528:34
8:34
#9655
35K
21.75 mi14:09:162:51:247:536:21
8:29
#9662
23M
23.00 mi14:20:523:03:007:5711:36
9:16
#9820
24M
24.00 mi14:31:063:13:148:0310:14
10:14
#10246
40K
24.85 mi14:40:473:22:558:109:41
11:20
#10777
25.2M
25.20 mi14:44:483:26:568:134:01
11:39
#10907
Finish
26.22 mi14:54:183:36:268:169:30
9:19
#11087
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi16291105131051311327(Top 44%)8440(Top 58%)8440(Top 174%)
10K6.21 mi3.10 mi14931+13609999+5149999+51413441(Top 53%)9389(Top 64%)9389(Top 194%)
15K9.32 mi3.11 mi13736+11959504+4959504+49511327(Top 44%)8440(Top 58%)8440(Top 174%)
20K12.43 mi3.11 mi12444+12928962+5428962+5429259(Top 36%)7297(Top 50%)7297(Top 150%)
Half13.11 mi0.68 mi12236+2088855+1078855+1078913(Top 35%)7130(Top 49%)7130(Top 147%)
25K15.53 mi2.42 mi11421+8158453+4028453+4027875(Top 31%)6356(Top 44%)6356(Top 131%)
30K18.64 mi3.11 mi10353+10687824+6297824+6296688(Top 26%)5440(Top 37%)5440(Top 112%)
20M20.00 mi1.36 mi9952+4017584+2407584+2406467(Top 25%)5142(Top 35%)5142(Top 106%)
21M21.00 mi1.00 mi9655+2977384+2007384+2006549(Top 26%)5012(Top 34%)5012(Top 103%)
35K21.75 mi0.75 mi9662-77341+437341+4310651(Top 42%)7060(Top 48%)7060(Top 146%)
23M23.00 mi1.25 mi9820-1587354-137354-1312435(Top 49%)7775(Top 53%)7775(Top 160%)
24M24.00 mi1.00 mi10246-4267524-1707524-17017052(Top 67%)10035(Top 69%)10035(Top 207%)
40K24.85 mi0.85 mi10777-5317738-2147738-21418893(Top 74%)10891(Top 75%)10891(Top 225%)
25.2M25.20 mi0.35 mi10907-1307778-407778-4016389(Top 64%)9606(Top 66%)9606(Top 198%)
Finish26.22 mi1.02 mi11087-1807814-367814-3615694(Top 61%)9290(Top 64%)9290(Top 192%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11327

Males

8440

M18-39

8440

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

13441

Males

9389

M18-39

9389

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11327

Males

8440

M18-39

8440

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9259

Males

7297

M18-39

7297

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

8913

Males

7130

M18-39

7130

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

7875

Males

6356

M18-39

6356

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

6688

Males

5440

M18-39

5440

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

6467

Males

5142

M18-39

5142

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

6549

Males

5012

M18-39

5012

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

10651

Males

7060

M18-39

7060

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

12435

Males

7775

M18-39

7775

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17052

Males

10035

M18-39

10035

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

18893

Males

10891

M18-39

10891

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

16389

Males

9606

M18-39

9606

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

15694

Males

9290

M18-39

9290

Passing Analysis

Category:
Athletes Passed
6988
Passed By
1782
Net Change
+5204
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16291
5K → 10K138424+1360#16291#14931
10K → 15K11994+1195#14931#13736
15K → 20K12920+1292#13736#12444
20K → Half2080+208#12444#12236
Half → 25K8161+815#12236#11421
25K → 30K10680+1068#11421#10353
30K → 20M4065+401#10353#9952
20M → 21M31316+297#9952#9655
21M → 35K8693-7#9655#9662
35K → 23M103260-158#9662#9820
23M → 24M34459-426#9820#10246
24M → 40K19550-531#10246#10777
40K → 25.2M19149-130#10777#10907
25.2M → Finish41221-180#10907#11087
TOTALS69881782+5204
📊

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