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BOSTON MARATHON 2023

John Flexner

Bib: 10098•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 44%
Masters (Masters Men)
#0 / 9891
Top 31%
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
22:30
Rank: #7747
Start → 5K
22:30 | 7:15/mi
10K· 6.21 mi
45:04
Rank: #8126 (-379)
5K → 10K
22:34 | 7:16/mi
15K· 9.32 mi
1:07:48
Rank: #8256 (-130)
10K → 15K
22:44 | 7:19/mi
20K· 12.43 mi
1:31:28
Rank: #8694 (-438)
15K → 20K
23:40 | 7:37/mi
Half· 13.11 mi
1:36:21
Rank: #8631 (+63)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:54:15
Rank: #8471 (+160)
Half → 25K
17:54 | 7:23/mi
30K· 18.64 mi
2:18:08
Rank: #8432 (+39)
25K → 30K
23:53 | 7:41/mi
20M
2:28:37
Rank: #8399 (+33)
30K → 20M
10:29 | 7:43/mi
21M
2:36:43
Rank: #8367 (+32)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:42:08
Rank: #8284 (+83)
21M → 35K
5:25 | 7:14/mi
23M
2:51:43
Rank: #8188 (+96)
35K → 23M
9:35 | 7:39/mi
24M
2:59:10
Rank: #8125 (+63)
23M → 24M
7:27 | 7:27/mi
40K· 24.85 mi
3:05:40
Rank: #8073 (+52)
24M → 40K
6:30 | 7:36/mi
25.2M
3:08:25
Rank: #8032 (+41)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:15:41
Rank: #7924 (+108)
25.2M → Finish
7:16 | 7:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:21
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:39:20
Pace7:35 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3122:307:1522:30
7:15
-
10K
6.21 mi11:11:0545:047:1522:34
7:16
+0:01
15K
9.32 mi11:33:491:07:487:1622:44
7:19
+0:03
20K
12.43 mi11:57:291:31:287:2223:40
7:37
+0:18
Half
13.11 mi12:02:221:36:217:214:53
7:09
-0:28
25K
15.53 mi12:20:161:54:157:2117:54
7:23
+0:14
30K
18.64 mi12:44:092:18:087:2523:53
7:41
+0:18
20M
20.00 mi12:54:382:28:377:2610:29
7:43
+0:02
21M
21.00 mi13:02:442:36:437:288:06
8:06
+0:23
35K
21.75 mi13:08:092:42:087:275:25
7:14
-0:52
23M
23.00 mi13:17:442:51:437:289:35
7:39
+0:25
24M
24.00 mi13:25:112:59:107:287:27
7:27
-0:12
40K
24.85 mi13:31:413:05:407:286:30
7:36
+0:09
25.2M
25.20 mi13:34:263:08:257:292:45
7:58
+0:22
Finish
26.22 mi13:41:423:15:417:287:16
7:08
-0:50

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

7:08 /mi

Average Pace

7:28 /mi

Slowest Pace

8:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:50

94% of race

Time at Steady Pace

10:51

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:28 /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 mi10:48:3122:307:1522:30
7:15
#7747
10K
6.21 mi11:11:0545:047:1522:34
7:16
#8126
15K
9.32 mi11:33:491:07:487:1622:44
7:19
#8256
20K
12.43 mi11:57:291:31:287:2223:40
7:37
#8694
Half
13.11 mi12:02:221:36:217:214:53
7:09
#8631
25K
15.53 mi12:20:161:54:157:2117:54
7:23
#8471
30K
18.64 mi12:44:092:18:087:2523:53
7:41
#8432
20M
20.00 mi12:54:382:28:377:2610:29
7:43
#8399
21M
21.00 mi13:02:442:36:437:288:06
8:06
#8367
35K
21.75 mi13:08:092:42:087:275:25
7:14
#8284
23M
23.00 mi13:17:442:51:437:289:35
7:39
#8188
24M
24.00 mi13:25:112:59:107:287:27
7:27
#8125
40K
24.85 mi13:31:413:05:407:286:30
7:36
#8073
25.2M
25.20 mi13:34:263:08:257:292:45
7:58
#8032
Finish
26.22 mi13:41:423:15:417:287:16
7:08
#7924
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi7747681168118691(Top 33%)7361(Top 49%)7361(Top 328%)
10K6.21 mi3.10 mi8126-3797040-2297040-2298565(Top 32%)7304(Top 48%)7304(Top 326%)
15K9.32 mi3.11 mi8256-1307117-777117-778691(Top 33%)7361(Top 49%)7361(Top 328%)
20K12.43 mi3.11 mi8694-4387371-2547371-25410199(Top 38%)8178(Top 54%)8178(Top 365%)
Half13.11 mi0.68 mi8631+637335+367335+367552(Top 28%)6611(Top 44%)6611(Top 295%)
25K15.53 mi2.42 mi8471+1607214+1217214+1217859(Top 30%)6709(Top 44%)6709(Top 299%)
30K18.64 mi3.11 mi8432+397145+697145+698534(Top 32%)7002(Top 46%)7002(Top 312%)
20M20.00 mi1.36 mi8399+337105+407105+408273(Top 31%)6758(Top 45%)6758(Top 302%)
21M21.00 mi1.00 mi8367+327067+387067+387987(Top 30%)6464(Top 43%)6464(Top 288%)
35K21.75 mi0.75 mi8284+837007+607007+606771(Top 25%)5757(Top 38%)5757(Top 257%)
23M23.00 mi1.25 mi8188+966922+856922+857440(Top 28%)6081(Top 40%)6081(Top 271%)
24M24.00 mi1.00 mi8125+636864+586864+587360(Top 28%)5930(Top 39%)5930(Top 265%)
40K24.85 mi0.85 mi8073+526812+526812+527324(Top 28%)5823(Top 38%)5823(Top 260%)
25.2M25.20 mi0.35 mi8032+416776+366776+366343(Top 24%)5179(Top 34%)5179(Top 231%)
Finish26.22 mi1.02 mi7924+1086688+886688+885992(Top 23%)4931(Top 32%)4931(Top 220%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8691

Males

7361

M40-44

7361

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

8565

Males

7304

M40-44

7304

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8691

Males

7361

M40-44

7361

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10199

Males

8178

M40-44

8178

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7552

Males

6611

M40-44

6611

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

7859

Males

6709

M40-44

6709

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8534

Males

7002

M40-44

7002

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8273

Males

6758

M40-44

6758

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

7987

Males

6464

M40-44

6464

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6771

Males

5757

M40-44

5757

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

7440

Males

6081

M40-44

6081

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7360

Males

5930

M40-44

5930

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7324

Males

5823

M40-44

5823

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6343

Males

5179

M40-44

5179

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

5992

Males

4931

M40-44

4931

Passing Analysis

Category:
Athletes Passed
1400
Passed By
1577
Net Change
-177
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7747
5K → 10K87466-379#7747#8126
10K → 15K97227-130#8126#8256
15K → 20K36474-438#8256#8694
20K → Half707+63#8694#8631
Half → 25K18323+160#8631#8471
25K → 30K175136+39#8471#8432
30K → 20M9360+33#8432#8399
20M → 21M8553+32#8399#8367
21M → 35K9512+83#8367#8284
35K → 23M12832+96#8284#8188
23M → 24M9330+63#8188#8125
24M → 40K8129+52#8125#8073
40K → 25.2M509+41#8073#8032
25.2M → Finish12719+108#8032#7924
TOTALS14001577-177
📊

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