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BOSTON MARATHON 2023

Mauritz Jansen-Van Rensburg

Bib: 2775•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 19%
Masters (Masters Men)
#0 / 9891
Top 8%
Division (M50-54)
#0 / 2052
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:40
Rank: #3244
Start → 5K
20:40 | 6:39/mi
10K· 6.21 mi
40:51
Rank: #2967 (+277)
5K → 10K
20:11 | 6:30/mi
15K· 9.32 mi
1:01:54
Rank: #3486 (-519)
10K → 15K
21:03 | 6:47/mi
20K· 12.43 mi
1:23:00
Rank: #3679 (-193)
15K → 20K
21:06 | 6:47/mi
Half· 13.11 mi
1:27:33
Rank: #3687 (-8)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:43:30
Rank: #3442 (+245)
Half → 25K
15:57 | 6:35/mi
30K· 18.64 mi
2:05:06
Rank: #3528 (-86)
25K → 30K
21:36 | 6:57/mi
20M
2:14:21
Rank: #3434 (+94)
30K → 20M
9:15 | 6:48/mi
21M
2:21:33
Rank: #3362 (+72)
20M → 21M
7:12 | 7:12/mi
35K· 21.75 mi
2:26:23
Rank: #3306 (+56)
21M → 35K
4:50 | 6:28/mi
23M
2:34:48
Rank: #3205 (+101)
35K → 23M
8:25 | 6:43/mi
24M
2:41:21
Rank: #3132 (+73)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:47:05
Rank: #3063 (+69)
24M → 40K
5:44 | 6:42/mi
25.2M
2:49:36
Rank: #3047 (+16)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:56:36
Rank: #3084 (-37)
25.2M → Finish
7:00 | 6:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:33
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:29:03
Pace6:48 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4420:406:3920:40
6:39
-
10K
6.21 mi10:41:5540:516:3420:11
6:30
-0:09
15K
9.32 mi11:02:581:01:546:3821:03
6:47
+0:17
20K
12.43 mi11:24:041:23:006:4121:06
6:47
0:00
Half
13.11 mi11:28:371:27:336:414:33
6:40
-0:07
25K
15.53 mi11:44:341:43:306:4015:57
6:35
-0:05
30K
18.64 mi12:06:102:05:066:4321:36
6:57
+0:22
20M
20.00 mi12:15:252:14:216:439:15
6:48
-0:09
21M
21.00 mi12:22:372:21:336:447:12
7:12
+0:24
35K
21.75 mi12:27:272:26:236:444:50
6:28
-0:44
23M
23.00 mi12:35:522:34:486:448:25
6:43
+0:15
24M
24.00 mi12:42:252:41:216:436:33
6:33
-0:10
40K
24.85 mi12:48:092:47:056:435:44
6:42
+0:09
25.2M
25.20 mi12:50:402:49:366:442:31
7:18
+0:36
Finish
26.22 mi12:57:402:56:366:447:00
6:52
-0:26

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

6:28 /mi

Average Pace

6:44 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:53

94% of race

Time at Steady Pace

9:43

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:44 /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 mi10:21:4420:406:3920:40
6:39
#3244
10K
6.21 mi10:41:5540:516:3420:11
6:30
#2967
15K
9.32 mi11:02:581:01:546:3821:03
6:47
#3486
20K
12.43 mi11:24:041:23:006:4121:06
6:47
#3679
Half
13.11 mi11:28:371:27:336:414:33
6:40
#3687
25K
15.53 mi11:44:341:43:306:4015:57
6:35
#3442
30K
18.64 mi12:06:102:05:066:4321:36
6:57
#3528
20M
20.00 mi12:15:252:14:216:439:15
6:48
#3434
21M
21.00 mi12:22:372:21:336:447:12
7:12
#3362
35K
21.75 mi12:27:272:26:236:444:50
6:28
#3306
23M
23.00 mi12:35:522:34:486:448:25
6:43
#3205
24M
24.00 mi12:42:252:41:216:436:33
6:33
#3132
40K
24.85 mi12:48:092:47:056:435:44
6:42
#3063
25.2M
25.20 mi12:50:402:49:366:442:31
7:18
#3047
Finish
26.22 mi12:57:402:56:366:447:00
6:52
#3084
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi3244306330634845(Top 18%)4506(Top 30%)4506(Top 220%)
10K6.21 mi3.10 mi2967+2772830+2332830+2332762(Top 10%)2640(Top 17%)2640(Top 129%)
15K9.32 mi3.11 mi3486-5193300-4703300-4704845(Top 18%)4506(Top 30%)4506(Top 220%)
20K12.43 mi3.11 mi3679-1933481-1813481-1814347(Top 16%)4057(Top 27%)4057(Top 198%)
Half13.11 mi0.68 mi3687-83487-63487-63969(Top 15%)3721(Top 25%)3721(Top 181%)
25K15.53 mi2.42 mi3442+2453266+2213266+2212589(Top 10%)2478(Top 16%)2478(Top 121%)
30K18.64 mi3.11 mi3528-863341-753341-754010(Top 15%)3744(Top 25%)3744(Top 182%)
20M20.00 mi1.36 mi3434+943250+913250+912860(Top 11%)2695(Top 18%)2695(Top 131%)
21M21.00 mi1.00 mi3362+723183+673183+673082(Top 12%)2886(Top 19%)2886(Top 141%)
35K21.75 mi0.75 mi3306+563131+523131+522260(Top 8%)2147(Top 14%)2147(Top 105%)
23M23.00 mi1.25 mi3205+1013037+943037+942279(Top 9%)2150(Top 14%)2150(Top 105%)
24M24.00 mi1.00 mi3132+732970+672970+672323(Top 9%)2174(Top 14%)2174(Top 106%)
40K24.85 mi0.85 mi3063+692902+682902+682375(Top 9%)2205(Top 15%)2205(Top 107%)
25.2M25.20 mi0.35 mi3047+162886+162886+162920(Top 11%)2675(Top 18%)2675(Top 130%)
Finish26.22 mi1.02 mi3084-372921-352921-354430(Top 17%)3863(Top 25%)3863(Top 188%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4845

Males

4506

M50-54

4506

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2762

Males

2640

M50-54

2640

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4845

Males

4506

M50-54

4506

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4347

Males

4057

M50-54

4057

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

3969

Males

3721

M50-54

3721

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2589

Males

2478

M50-54

2478

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4010

Males

3744

M50-54

3744

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2860

Males

2695

M50-54

2695

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3082

Males

2886

M50-54

2886

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2260

Males

2147

M50-54

2147

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2279

Males

2150

M50-54

2150

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2323

Males

2174

M50-54

2174

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2375

Males

2205

M50-54

2205

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2920

Males

2675

M50-54

2675

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4430

Males

3863

M50-54

3863

Passing Analysis

Category:
Athletes Passed
1314
Passed By
1154
Net Change
+160
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3244
5K → 10K33154+277#3244#2967
10K → 15K8527-519#2967#3486
15K → 20K39232-193#3486#3679
20K → Half917-8#3679#3687
Half → 25K2461+245#3687#3442
25K → 30K77163-86#3442#3528
30K → 20M11218+94#3528#3434
20M → 21M9725+72#3434#3362
21M → 35K604+56#3362#3306
35K → 23M1109+101#3306#3205
23M → 24M818+73#3205#3132
24M → 40K8011+69#3132#3063
40K → 25.2M259+16#3063#3047
25.2M → Finish3976-37#3047#3084
TOTALS13141154+160
📊

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