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BOSTON MARATHON 2023

James Knauer

Bib: 30791•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:52
Rank: #20321
Start → 5K
27:52 | 8:58/mi
10K· 6.21 mi
56:02
Rank: #20714 (-393)
5K → 10K
28:10 | 9:04/mi
15K· 9.32 mi
1:24:34
Rank: #20912 (-198)
10K → 15K
28:32 | 9:11/mi
20K· 12.43 mi
1:53:29
Rank: #20922 (-10)
15K → 20K
28:55 | 9:18/mi
Half· 13.11 mi
1:59:50
Rank: #20954 (-32)
20K → Half
6:21 | 9:18/mi
25K· 15.53 mi
2:23:08
Rank: #20987 (-33)
Half → 25K
23:18 | 9:37/mi
30K· 18.64 mi
2:56:00
Rank: #21299 (-312)
25K → 30K
32:52 | 10:35/mi
20M
3:10:00
Rank: #21281 (+18)
30K → 20M
14:00 | 10:18/mi
21M
3:21:07
Rank: #21275 (+6)
20M → 21M
11:07 | 11:07/mi
35K· 21.75 mi
3:28:38
Rank: #21278 (-3)
21M → 35K
7:31 | 10:03/mi
23M
3:41:41
Rank: #21249 (+29)
35K → 23M
13:03 | 10:25/mi
24M
3:51:52
Rank: #21249
23M → 24M
10:11 | 10:11/mi
40K· 24.85 mi
4:00:31
Rank: #21201 (+48)
24M → 40K
8:39 | 10:07/mi
25.2M
4:04:16
Rank: #21184 (+17)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
4:14:12
Rank: #21176 (+8)
25.2M → Finish
9:56 | 9:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:50
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:14:22
Pace10:15 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5227:528:5827:52
8:58
-
10K
6.21 mi12:19:0256:029:0128:10
9:04
+0:06
15K
9.32 mi12:47:341:24:349:0428:32
9:11
+0:07
20K
12.43 mi13:16:291:53:299:0828:55
9:18
+0:07
Half
13.11 mi13:22:501:59:509:086:21
9:18
0:00
25K
15.53 mi13:46:082:23:089:1323:18
9:37
+0:19
30K
18.64 mi14:19:002:56:009:2632:52
10:35
+0:58
20M
20.00 mi14:33:003:10:009:3014:00
10:18
-0:17
21M
21.00 mi14:44:073:21:079:3511:07
11:07
+0:49
35K
21.75 mi14:51:383:28:389:367:31
10:03
-1:04
23M
23.00 mi15:04:413:41:419:3813:03
10:25
+0:22
24M
24.00 mi15:14:523:51:529:4010:11
10:11
-0:14
40K
24.85 mi15:23:314:00:319:418:39
10:07
-0:04
25.2M
25.20 mi15:27:164:04:169:423:45
10:52
+0:45
Finish
26.22 mi15:37:124:14:129:429:56
9:45
-1:07

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

8:58 /mi

Average Pace

9:42 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:08

56% of race

Time at Steady Pace

50:17

20% of race

Time at Slower Pace

1:00:47

24% of race

Average Pace: 9:42 /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 mi11:50:5227:528:5827:52
8:58
#20321
10K
6.21 mi12:19:0256:029:0128:10
9:04
#20714
15K
9.32 mi12:47:341:24:349:0428:32
9:11
#20912
20K
12.43 mi13:16:291:53:299:0828:55
9:18
#20922
Half
13.11 mi13:22:501:59:509:086:21
9:18
#20954
25K
15.53 mi13:46:082:23:089:1323:18
9:37
#20987
30K
18.64 mi14:19:002:56:009:2632:52
10:35
#21299
20M
20.00 mi14:33:003:10:009:3014:00
10:18
#21281
21M
21.00 mi14:44:073:21:079:3511:07
11:07
#21275
35K
21.75 mi14:51:383:28:389:367:31
10:03
#21278
23M
23.00 mi15:04:413:41:419:3813:03
10:25
#21249
24M
24.00 mi15:14:523:51:529:4010:11
10:11
#21249
40K
24.85 mi15:23:314:00:319:418:39
10:07
#21201
25.2M
25.20 mi15:27:164:04:169:423:45
10:52
#21184
Finish
26.22 mi15:37:124:14:129:429:56
9:45
#21176
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi20321122911229121260(Top 80%)12859(Top 85%)12859(Top 574%)
10K6.21 mi3.10 mi20714-39312539-24812539-24821151(Top 79%)12776(Top 84%)12776(Top 570%)
15K9.32 mi3.11 mi20912-19812653-11412653-11421260(Top 80%)12859(Top 85%)12859(Top 574%)
20K12.43 mi3.11 mi20922-1012671-1812671-1821006(Top 79%)12749(Top 84%)12749(Top 569%)
Half13.11 mi0.68 mi20954-3212687-1612687-1621590(Top 81%)12995(Top 86%)12995(Top 580%)
25K15.53 mi2.42 mi20987-3312709-2212709-2221173(Top 80%)12784(Top 84%)12784(Top 570%)
30K18.64 mi3.11 mi21299-31212828-11912828-11922372(Top 84%)13238(Top 87%)13238(Top 591%)
20M20.00 mi1.36 mi21281+1812802+2612802+2621289(Top 80%)12691(Top 84%)12691(Top 566%)
21M21.00 mi1.00 mi21275+612787+1512787+1521083(Top 79%)12552(Top 83%)12552(Top 560%)
35K21.75 mi0.75 mi21278-312785+212785+221447(Top 81%)12675(Top 84%)12675(Top 566%)
23M23.00 mi1.25 mi21249+2912753+3212753+3221146(Top 79%)12515(Top 82%)12515(Top 558%)
24M24.00 mi1.00 mi2124912748+512748+521314(Top 80%)12554(Top 83%)12554(Top 560%)
40K24.85 mi0.85 mi21201+4812714+3412714+3420317(Top 76%)12058(Top 79%)12058(Top 538%)
25.2M25.20 mi0.35 mi21184+1712707+712707+720220(Top 76%)12012(Top 79%)12012(Top 536%)
Finish26.22 mi1.02 mi21176+812690+1712690+1721002(Top 79%)12411(Top 82%)12411(Top 554%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

21260

Males

12859

M40-44

12859

5K→10K

3.1 - 6.2 mi

Top 79%
×5stories
+79ft-138ft

Overall

21151

Males

12776

M40-44

12776

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

21260

Males

12859

M40-44

12859

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

21006

Males

12749

M40-44

12749

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

21590

Males

12995

M40-44

12995

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

21173

Males

12784

M40-44

12784

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

22372

Males

13238

M40-44

13238

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21289

Males

12691

M40-44

12691

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

21083

Males

12552

M40-44

12552

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21447

Males

12675

M40-44

12675

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

21146

Males

12515

M40-44

12515

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21314

Males

12554

M40-44

12554

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20317

Males

12058

M40-44

12058

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20220

Males

12012

M40-44

12012

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

21002

Males

12411

M40-44

12411

Passing Analysis

Category:
Athletes Passed
1005
Passed By
1860
Net Change
-855
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20321
5K → 10K130523-393#20321#20714
10K → 15K105303-198#20714#20912
15K → 20K159169-10#20912#20922
20K → Half1951-32#20922#20954
Half → 25K90123-33#20954#20987
25K → 30K55367-312#20987#21299
30K → 20M8365+18#21299#21281
20M → 21M7064+6#21281#21275
21M → 35K2932-3#21275#21278
35K → 23M7849+29#21278#21249
23M → 24M45450#21249#21249
24M → 40K7123+48#21249#21201
40K → 25.2M2912+17#21201#21184
25.2M → Finish4234+8#21184#21176
TOTALS10051860-855
📊

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