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BOSTON MARATHON 2023

Stephen A Losey

Bib: 3224•M

MO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 45%
Masters (Masters Men)
#0 / 9891
Top 32%
Division (M45-49)
#0 / 2252
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:17
Rank: #7333
Start → 5K
22:17 | 7:10/mi
10K· 6.21 mi
44:48
Rank: #7831 (-498)
5K → 10K
22:31 | 7:15/mi
15K· 9.32 mi
1:07:16
Rank: #7874 (-43)
10K → 15K
22:28 | 7:14/mi
20K· 12.43 mi
1:29:54
Rank: #7789 (+85)
15K → 20K
22:38 | 7:17/mi
Half· 13.11 mi
1:34:46
Rank: #7758 (+31)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:52:45
Rank: #7774 (-16)
Half → 25K
17:59 | 7:25/mi
30K· 18.64 mi
2:16:09
Rank: #7658 (+116)
25K → 30K
23:24 | 7:32/mi
20M
2:26:57
Rank: #7788 (-130)
30K → 20M
10:48 | 7:57/mi
21M
2:35:12
Rank: #7792 (-4)
20M → 21M
8:15 | 8:15/mi
35K· 21.75 mi
2:41:09
Rank: #7931 (-139)
21M → 35K
5:57 | 7:57/mi
23M
2:51:10
Rank: #8016 (-85)
35K → 23M
10:01 | 8:00/mi
24M
2:58:50
Rank: #8026 (-10)
23M → 24M
7:40 | 7:40/mi
40K· 24.85 mi
3:05:32
Rank: #8030 (-4)
24M → 40K
6:42 | 7:50/mi
25.2M
3:08:23
Rank: #8020 (+10)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:16:12
Rank: #8081 (-61)
25.2M → Finish
7:49 | 7:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:46
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:41:26
Pace7:44 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5822:177:1022:17
7:10
-
10K
6.21 mi10:46:2944:487:1322:31
7:15
+0:05
15K
9.32 mi11:08:571:07:167:1322:28
7:14
-0:01
20K
12.43 mi11:31:351:29:547:1422:38
7:17
+0:03
Half
13.11 mi11:36:271:34:467:144:52
7:08
-0:09
25K
15.53 mi11:54:261:52:457:1517:59
7:25
+0:17
30K
18.64 mi12:17:502:16:097:1823:24
7:32
+0:07
20M
20.00 mi12:28:382:26:577:2110:48
7:57
+0:25
21M
21.00 mi12:36:532:35:127:238:15
8:15
+0:18
35K
21.75 mi12:42:502:41:097:255:57
7:57
-0:18
23M
23.00 mi12:52:512:51:107:2710:01
8:00
+0:03
24M
24.00 mi13:00:312:58:507:277:40
7:40
-0:20
40K
24.85 mi13:07:133:05:327:286:42
7:50
+0:10
25.2M
25.20 mi13:10:043:08:237:292:51
8:16
+0:26
Finish
26.22 mi13:17:533:16:127:297:49
7:40
-0:36

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

7:29 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:20

81% of race

Time at Steady Pace

37:52

19% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi10:23:5822:177:1022:17
7:10
#7333
10K
6.21 mi10:46:2944:487:1322:31
7:15
#7831
15K
9.32 mi11:08:571:07:167:1322:28
7:14
#7874
20K
12.43 mi11:31:351:29:547:1422:38
7:17
#7789
Half
13.11 mi11:36:271:34:467:144:52
7:08
#7758
25K
15.53 mi11:54:261:52:457:1517:59
7:25
#7774
30K
18.64 mi12:17:502:16:097:1823:24
7:32
#7658
20M
20.00 mi12:28:382:26:577:2110:48
7:57
#7788
21M
21.00 mi12:36:532:35:127:238:15
8:15
#7792
35K
21.75 mi12:42:502:41:097:255:57
7:57
#7931
23M
23.00 mi12:52:512:51:107:2710:01
8:00
#8016
24M
24.00 mi13:00:312:58:507:277:40
7:40
#8026
40K
24.85 mi13:07:133:05:327:286:42
7:50
#8030
25.2M
25.20 mi13:10:043:08:237:292:51
8:16
#8020
Finish
26.22 mi13:17:533:16:127:297:49
7:40
#8081
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7333652665268010(Top 30%)6928(Top 46%)6928(Top 308%)
10K6.21 mi3.10 mi7831-4986863-3376863-3378456(Top 32%)7231(Top 48%)7231(Top 321%)
15K9.32 mi3.11 mi7874-436873-106873-108010(Top 30%)6928(Top 46%)6928(Top 308%)
20K12.43 mi3.11 mi7789+856800+736800+737672(Top 29%)6675(Top 44%)6675(Top 296%)
Half13.11 mi0.68 mi7758+316774+266774+267380(Top 28%)6500(Top 43%)6500(Top 289%)
25K15.53 mi2.42 mi7774-166768+66768+68153(Top 31%)6904(Top 45%)6904(Top 307%)
30K18.64 mi3.11 mi7658+1166669+996669+997439(Top 28%)6349(Top 42%)6349(Top 282%)
20M20.00 mi1.36 mi7788-1306725-566725-569844(Top 37%)7655(Top 50%)7655(Top 340%)
21M21.00 mi1.00 mi7792-46715+106715+108874(Top 33%)6988(Top 46%)6988(Top 310%)
35K21.75 mi0.75 mi7931-1396786-716786-7111712(Top 44%)8412(Top 55%)8412(Top 374%)
23M23.00 mi1.25 mi8016-856813-276813-279712(Top 36%)7335(Top 48%)7335(Top 326%)
24M24.00 mi1.00 mi8026-106803+106803+108827(Top 33%)6796(Top 45%)6796(Top 302%)
40K24.85 mi0.85 mi8030-46784+196784+198882(Top 33%)6744(Top 44%)6744(Top 299%)
25.2M25.20 mi0.35 mi8020+106768+166768+168012(Top 30%)6172(Top 41%)6172(Top 274%)
Finish26.22 mi1.02 mi8081-616790-226790-229749(Top 37%)7141(Top 47%)7141(Top 317%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8010

Males

6928

M45-49

6928

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

8456

Males

7231

M45-49

7231

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8010

Males

6928

M45-49

6928

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

7672

Males

6675

M45-49

6675

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7380

Males

6500

M45-49

6500

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8153

Males

6904

M45-49

6904

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7439

Males

6349

M45-49

6349

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9844

Males

7655

M45-49

7655

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8874

Males

6988

M45-49

6988

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11712

Males

8412

M45-49

8412

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9712

Males

7335

M45-49

7335

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8827

Males

6796

M45-49

6796

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8882

Males

6744

M45-49

6744

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8012

Males

6172

M45-49

6172

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9749

Males

7141

M45-49

7141

Passing Analysis

Category:
Athletes Passed
1035
Passed By
1783
Net Change
-748
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7333
5K → 10K73571-498#7333#7831
10K → 15K123166-43#7831#7874
15K → 20K15570+85#7874#7789
20K → Half398+31#7789#7758
Half → 25K86102-16#7758#7774
25K → 30K19074+116#7774#7658
30K → 20M30160-130#7658#7788
20M → 21M7074-4#7788#7792
21M → 35K16155-139#7792#7931
35K → 23M61146-85#7931#8016
23M → 24M6070-10#8016#8026
24M → 40K6165-4#8026#8030
40K → 25.2M3020+10#8030#8020
25.2M → Finish41102-61#8020#8081
TOTALS10351783-748
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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