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BOSTON MARATHON 2023

Marcel Nienhuis

Bib: 8811•M

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
Masters (Masters Men)
#0 / 9891
Top 12%
Division (M45-49)
#0 / 2252
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:21
Rank: #5316
Start → 5K
6:52/mi
21:21 split
10K· 6.21 mi
42:21
Rank: #5085 (+231)
5K → 10K
6:46/mi
21:00 split
15K· 9.32 mi
1:03:30
Rank: #5108 (-23)
10K → 15K
6:48/mi
21:09 split
20K· 12.43 mi
1:24:31
Rank: #4853 (+255)
15K → 20K
6:46/mi
21:01 split
Half· 13.11 mi
1:29:02
Rank: #4776 (+77)
20K → Half
6:37/mi
4:31 split
25K· 15.53 mi
1:45:27
Rank: #4571 (+205)
Half → 25K
6:46/mi
16:25 split
30K· 18.64 mi
2:07:16
Rank: #4542 (+29)
25K → 30K
7:01/mi
21:49 split
20M
2:16:38
Rank: #4438 (+104)
30K → 20M
6:54/mi
9:22 split
21M
2:24:01
Rank: #4389 (+49)
20M → 21M
7:23/mi
7:23 split
35K· 21.75 mi
2:29:07
Rank: #4371 (+18)
21M → 35K
6:49/mi
5:06 split
23M
2:37:56
Rank: #4323 (+48)
35K → 23M
7:03/mi
8:49 split
24M
2:44:44
Rank: #4298 (+25)
23M → 24M
6:48/mi
6:48 split
40K· 24.85 mi
2:50:43
Rank: #4258 (+40)
24M → 40K
7:00/mi
5:59 split
25.2M
2:53:19
Rank: #4255 (+3)
40K → 25.2M
7:32/mi
2:36 split
Finish· 26.22 mi
3:00:02
Rank: #4201 (+54)
25.2M → Finish
6:35/mi
6:43 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:02
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:31:00
Pace6:57 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:5421:216:5221:21
6:52
-
10K
6.21 mi11:07:5442:216:4921:00
6:46
-0:06
15K
9.32 mi11:29:031:03:306:4921:09
6:48
+0:02
20K
12.43 mi11:50:041:24:316:4821:01
6:46
-0:02
Half
13.11 mi11:54:351:29:026:474:31
6:37
-0:09
25K
15.53 mi12:11:001:45:276:4716:25
6:46
+0:09
30K
18.64 mi12:32:492:07:166:5021:49
7:01
+0:15
20M
20.00 mi12:42:112:16:386:509:22
6:54
-0:07
21M
21.00 mi12:49:342:24:016:517:23
7:23
+0:29
35K
21.75 mi12:54:402:29:076:515:06
6:49
-0:34
23M
23.00 mi13:03:292:37:566:528:49
7:03
+0:14
24M
24.00 mi13:10:172:44:446:526:48
6:48
-0:15
40K
24.85 mi13:16:162:50:436:525:59
7:00
+0:12
25.2M
25.20 mi13:18:522:53:196:532:36
7:32
+0:32
Finish
26.22 mi13:25:353:00:026:526:43
6:35
-0:57

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

6:35 /mi

Average Pace

6:52 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:03

94% of race

Time at Steady Pace

9:59

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:46:5421:216:5221:21
6:52
#5316
10K
6.21 mi11:07:5442:216:4921:00
6:46
#5085
15K
9.32 mi11:29:031:03:306:4921:09
6:48
#5108
20K
12.43 mi11:50:041:24:316:4821:01
6:46
#4853
Half
13.11 mi11:54:351:29:026:474:31
6:37
#4776
25K
15.53 mi12:11:001:45:276:4716:25
6:46
#4571
30K
18.64 mi12:32:492:07:166:5021:49
7:01
#4542
20M
20.00 mi12:42:112:16:386:509:22
6:54
#4438
21M
21.00 mi12:49:342:24:016:517:23
7:23
#4389
35K
21.75 mi12:54:402:29:076:515:06
6:49
#4371
23M
23.00 mi13:03:292:37:566:528:49
7:03
#4323
24M
24.00 mi13:10:172:44:446:526:48
6:48
#4298
40K
24.85 mi13:16:162:50:436:525:59
7:00
#4258
25.2M
25.20 mi13:18:522:53:196:532:36
7:32
#4255
Finish
26.22 mi13:25:353:00:026:526:43
6:35
#4201
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5316491449145185(Top 19%)4793(Top 32%)4793(Top 213%)
10K6.21 mi3.10 mi5085+2314712+2024712+2024892(Top 18%)4537(Top 30%)4537(Top 201%)
15K9.32 mi3.11 mi5108-234737-254737-255185(Top 19%)4793(Top 32%)4793(Top 213%)
20K12.43 mi3.11 mi4853+2554519+2184519+2184131(Top 16%)3875(Top 26%)3875(Top 172%)
Half13.11 mi0.68 mi4776+774450+694450+693616(Top 14%)3424(Top 23%)3424(Top 152%)
25K15.53 mi2.42 mi4571+2054268+1824268+1823901(Top 15%)3669(Top 24%)3669(Top 163%)
30K18.64 mi3.11 mi4542+294240+284240+284494(Top 17%)4162(Top 27%)4162(Top 185%)
20M20.00 mi1.36 mi4438+1044144+964144+963389(Top 13%)3172(Top 21%)3172(Top 141%)
21M21.00 mi1.00 mi4389+494101+434101+434058(Top 15%)3736(Top 25%)3736(Top 166%)
35K21.75 mi0.75 mi4371+184081+204081+204286(Top 16%)3921(Top 26%)3921(Top 174%)
23M23.00 mi1.25 mi4323+484044+374044+373988(Top 15%)3669(Top 24%)3669(Top 163%)
24M24.00 mi1.00 mi4298+254021+234021+233660(Top 14%)3359(Top 22%)3359(Top 149%)
40K24.85 mi0.85 mi4258+403980+413980+413841(Top 14%)3458(Top 23%)3458(Top 154%)
25.2M25.20 mi0.35 mi4255+33974+63974+64044(Top 15%)3586(Top 24%)3586(Top 159%)
Finish26.22 mi1.02 mi4201+543926+483926+482951(Top 11%)2676(Top 18%)2676(Top 119%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5185

Males

4793

M45-49

4793

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4892

Males

4537

M45-49

4537

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5185

Males

4793

M45-49

4793

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4131

Males

3875

M45-49

3875

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3616

Males

3424

M45-49

3424

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3901

Males

3669

M45-49

3669

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4494

Males

4162

M45-49

4162

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3389

Males

3172

M45-49

3172

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4058

Males

3736

M45-49

3736

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4286

Males

3921

M45-49

3921

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

3988

Males

3669

M45-49

3669

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3660

Males

3359

M45-49

3359

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3841

Males

3458

M45-49

3458

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4044

Males

3586

M45-49

3586

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2951

Males

2676

M45-49

2676

Passing Analysis

Category:
Athletes Passed
1717
Passed By
602
Net Change
+1115
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5316
5K → 10K32695+231#5316#5085
10K → 15K102125-23#5085#5108
15K → 20K27318+255#5108#4853
20K → Half803+77#4853#4776
Half → 25K22419+205#4776#4571
25K → 30K145116+29#4571#4542
30K → 20M11814+104#4542#4438
20M → 21M8435+49#4438#4389
21M → 35K5234+18#4389#4371
35K → 23M9446+48#4371#4323
23M → 24M5934+25#4323#4298
24M → 40K6424+40#4298#4258
40K → 25.2M2522+3#4258#4255
25.2M → Finish7117+54#4255#4201
TOTALS1717602+1115
📊

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