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BOSTON MARATHON 2023

John Nicolaysen

Bib: 4205•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 24%
Gender (Male)
#0 / 15176
Top 38%
Masters (Masters Men)
#0 / 9891
Top 24%
Division (M55-59)
#0 / 1422
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:22
Rank: #2588
Start → 5K
20:22 | 6:33/mi
10K· 6.21 mi
41:00
Rank: #3157 (-569)
5K → 10K
20:38 | 6:38/mi
15K· 9.32 mi
1:02:03
Rank: #3617 (-460)
10K → 15K
21:03 | 6:47/mi
20K· 12.43 mi
1:23:47
Rank: #4276 (-659)
15K → 20K
21:44 | 7:00/mi
Half· 13.11 mi
1:28:35
Rank: #4437 (-161)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:46:01
Rank: #4941 (-504)
Half → 25K
17:26 | 7:11/mi
30K· 18.64 mi
2:09:05
Rank: #5363 (-422)
25K → 30K
23:04 | 7:25/mi
20M
2:19:20
Rank: #5461 (-98)
30K → 20M
10:15 | 7:33/mi
21M
2:27:45
Rank: #5625 (-164)
20M → 21M
8:25 | 8:25/mi
35K· 21.75 mi
2:33:19
Rank: #5690 (-65)
21M → 35K
5:34 | 7:26/mi
23M
2:43:23
Rank: #5836 (-146)
35K → 23M
10:04 | 8:02/mi
24M
2:51:33
Rank: #6013 (-177)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
2:58:57
Rank: #6230 (-217)
24M → 40K
7:24 | 8:39/mi
25.2M
3:02:09
Rank: #6331 (-101)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:10:25
Rank: #6508 (-177)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:35
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:41:50
Pace7:46 /mi
📊Positive Split: 15.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2620:226:3320:22
6:33
-
10K
6.21 mi10:43:0441:006:3620:38
6:38
+0:05
15K
9.32 mi11:04:071:02:036:3921:03
6:47
+0:09
20K
12.43 mi11:25:511:23:476:4521:44
7:00
+0:13
Half
13.11 mi11:30:391:28:356:454:48
7:02
+0:02
25K
15.53 mi11:48:051:46:016:4917:26
7:11
+0:09
30K
18.64 mi12:11:092:09:056:5523:04
7:25
+0:14
20M
20.00 mi12:21:242:19:206:5810:15
7:33
+0:08
21M
21.00 mi12:29:492:27:457:028:25
8:25
+0:52
35K
21.75 mi12:35:232:33:197:035:34
7:26
-0:59
23M
23.00 mi12:45:272:43:237:0610:04
8:02
+0:36
24M
24.00 mi12:53:372:51:337:098:10
8:10
+0:08
40K
24.85 mi13:01:012:58:577:127:24
8:39
+0:29
25.2M
25.20 mi13:04:133:02:097:143:12
9:17
+0:38
Finish
26.22 mi13:12:293:10:257:168:16
8:07
-1:10

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

6:33 /mi

Average Pace

7:16 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:35

47% of race

Time at Steady Pace

56:19

30% of race

Time at Slower Pace

45:31

24% of race

Average Pace: 7:16 /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 mi10:22:2620:226:3320:22
6:33
#2588
10K
6.21 mi10:43:0441:006:3620:38
6:38
#3157
15K
9.32 mi11:04:071:02:036:3921:03
6:47
#3617
20K
12.43 mi11:25:511:23:476:4521:44
7:00
#4276
Half
13.11 mi11:30:391:28:356:454:48
7:02
#4437
25K
15.53 mi11:48:051:46:016:4917:26
7:11
#4941
30K
18.64 mi12:11:092:09:056:5523:04
7:25
#5363
20M
20.00 mi12:21:242:19:206:5810:15
7:33
#5461
21M
21.00 mi12:29:492:27:457:028:25
8:25
#5625
35K
21.75 mi12:35:232:33:197:035:34
7:26
#5690
23M
23.00 mi12:45:272:43:237:0610:04
8:02
#5836
24M
24.00 mi12:53:372:51:337:098:10
8:10
#6013
40K
24.85 mi13:01:012:58:577:127:24
8:39
#6230
25.2M
25.20 mi13:04:133:02:097:143:12
9:17
#6331
Finish
26.22 mi13:12:293:10:257:168:16
8:07
#6508
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi2588246724674888(Top 18%)4549(Top 30%)4549(Top 320%)
10K6.21 mi3.10 mi3157-5692998-5312998-5313827(Top 14%)3611(Top 24%)3611(Top 254%)
15K9.32 mi3.11 mi3617-4603419-4213419-4214888(Top 18%)4549(Top 30%)4549(Top 320%)
20K12.43 mi3.11 mi4276-6594009-5904009-5905957(Top 22%)5443(Top 36%)5443(Top 383%)
Half13.11 mi0.68 mi4437-1614153-1444153-1446726(Top 25%)6033(Top 40%)6033(Top 424%)
25K15.53 mi2.42 mi4941-5044593-4404593-4406622(Top 25%)5877(Top 39%)5877(Top 413%)
30K18.64 mi3.11 mi5363-4224949-3564949-3566736(Top 25%)5886(Top 39%)5886(Top 414%)
20M20.00 mi1.36 mi5461-985024-755024-757049(Top 26%)6001(Top 40%)6001(Top 422%)
21M21.00 mi1.00 mi5625-1645158-1345158-1349919(Top 37%)7548(Top 50%)7548(Top 531%)
35K21.75 mi0.75 mi5690-655204-465204-468025(Top 30%)6496(Top 43%)6496(Top 457%)
23M23.00 mi1.25 mi5836-1465296-925296-929999(Top 38%)7468(Top 49%)7468(Top 525%)
24M24.00 mi1.00 mi6013-1775417-1215417-12112318(Top 46%)8529(Top 56%)8529(Top 600%)
40K24.85 mi0.85 mi6230-2175573-1565573-15614225(Top 53%)9324(Top 61%)9324(Top 656%)
25.2M25.20 mi0.35 mi6331-1015647-745647-7413963(Top 52%)9181(Top 60%)9181(Top 646%)
Finish26.22 mi1.02 mi6508-1775753-1065753-10612813(Top 48%)8667(Top 57%)8667(Top 609%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4888

Males

4549

M55-59

4549

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3827

Males

3611

M55-59

3611

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4888

Males

4549

M55-59

4549

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

5957

Males

5443

M55-59

5443

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

6726

Males

6033

M55-59

6033

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

6622

Males

5877

M55-59

5877

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

6736

Males

5886

M55-59

5886

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7049

Males

6001

M55-59

6001

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

9919

Males

7548

M55-59

7548

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8025

Males

6496

M55-59

6496

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

9999

Males

7468

M55-59

7468

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12318

Males

8529

M55-59

8529

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14225

Males

9324

M55-59

9324

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13963

Males

9181

M55-59

9181

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

12813

Males

8667

M55-59

8667

Passing Analysis

Category:
Athletes Passed
267
Passed By
4187
Net Change
-3920
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2588
5K → 10K24593-569#2588#3157
10K → 15K19479-460#3157#3617
15K → 20K8667-659#3617#4276
20K → Half2163-161#4276#4437
Half → 25K24528-504#4437#4941
25K → 30K43465-422#4941#5363
30K → 20M34132-98#5363#5461
20M → 21M15179-164#5461#5625
21M → 35K1479-65#5625#5690
35K → 23M28174-146#5690#5836
23M → 24M23200-177#5836#6013
24M → 40K13230-217#6013#6230
40K → 25.2M5106-101#6230#6331
25.2M → Finish15192-177#6331#6508
TOTALS2674187-3920
📊

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