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BOSTON MARATHON 2023

Joshua Segal

Bib: 11383•M

DC

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:42/mi
23:54
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
47:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:31/mi
1:10:44
↑ 67↓ 78
20K· 12.43 mi
7:41/mi
1:34:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:39:44
↑ 19↓ 370.5%
25K· 15.53 mi
7:50/mi
1:58:44
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:25:18
↑ 181↓ 1480.2%
20M
10:30/mi
2:39:34
↑ 64↓ 500.2%
21M
10:30/mi
2:50:04
↑ 106↓ 241.6%
35K· 21.75 mi
9:49/mi
2:57:25
↑ 17↓ 861.7%
23M
10:01/mi
3:09:57
↑ 23↓ 630.6%
24M
10:09/mi
3:20:06
↓ 821.3%
40K· 24.85 mi
10:46/mi
3:29:18
↓ 200.3%
25.2M
11:59/mi
3:33:26
↑ 13↓ 160.2%
Finish· 26.22 mi
10:46/mi
3:44:24
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:44
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time2:04:40
Pace9:31 /mi
📊Positive Split: 25.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4623:547:4223:54
7:42
-
10K
6.21 mi11:15:1547:237:3823:29
7:34
-0:08
15K
9.32 mi11:38:361:10:447:3523:21
7:31
-0:03
20K
12.43 mi12:02:271:34:357:3723:51
7:41
+0:10
Half
13.11 mi12:07:361:39:447:365:09
7:33
-0:08
25K
15.53 mi12:26:361:58:447:3919:00
7:50
+0:17
30K
18.64 mi12:53:102:25:187:4826:34
8:33
+0:43
20M
20.00 mi13:07:262:39:347:5914:16
10:30
+1:57
21M
21.00 mi13:17:562:50:048:0610:30
10:30
0:00
35K
21.75 mi13:25:172:57:258:097:21
9:49
-0:41
23M
23.00 mi13:37:493:09:578:1612:32
10:01
+0:12
24M
24.00 mi13:47:583:20:068:2010:09
10:09
+0:08
40K
24.85 mi13:57:103:29:188:259:12
10:46
+0:37
25.2M
25.20 mi14:01:183:33:268:284:08
11:59
+1:13
Finish
26.22 mi14:12:163:44:248:3410:58
10:46
-1:13

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

7:31 /mi

Average Pace

8:34 /mi

Slowest Pace

11:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:18

65% of race

Time at Steady Pace

54:48

24% of race

Time at Slower Pace

24:18

11% of race

Average Pace: 8:34 /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 mi10:51:4623:547:4223:54
7:42
#11375
10K
6.21 mi11:15:1547:237:3823:29
7:34
#11146
15K
9.32 mi11:38:361:10:447:3523:21
7:31
#10828
20K
12.43 mi12:02:271:34:357:3723:51
7:41
#10797
Half
13.11 mi12:07:361:39:447:365:09
7:33
#10785
25K
15.53 mi12:26:361:58:447:3919:00
7:50
#10847
30K
18.64 mi12:53:102:25:187:4826:34
8:33
#11564
20M
20.00 mi13:07:262:39:347:5914:16
10:30
#12870
21M
21.00 mi13:17:562:50:048:0610:30
10:30
#13444
35K
21.75 mi13:25:172:57:258:097:21
9:49
#13856
23M
23.00 mi13:37:493:09:578:1612:32
10:01
#14395
24M
24.00 mi13:47:583:20:068:2010:09
10:09
#14823
40K
24.85 mi13:57:103:29:188:259:12
10:46
#15256
25.2M
25.20 mi14:01:183:33:268:284:08
11:59
#15475
Finish
26.22 mi14:12:163:44:248:3410:58
10:46
#16016
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi113758839883910306(Top 39%)8312(Top 55%)8312(Top 369%)
10K6.21 mi3.10 mi11146+2298730+1098730+10910942(Top 41%)8648(Top 57%)8648(Top 384%)
15K9.32 mi3.11 mi10828+3188566+1648566+16410306(Top 39%)8312(Top 55%)8312(Top 369%)
20K12.43 mi3.11 mi10797+318537+298537+2910725(Top 40%)8446(Top 56%)8446(Top 375%)
Half13.11 mi0.68 mi10785+128535+28535+210623(Top 40%)8445(Top 56%)8445(Top 375%)
25K15.53 mi2.42 mi10847-628559-248559-2411392(Top 43%)8670(Top 57%)8670(Top 385%)
30K18.64 mi3.11 mi11564-7178822-2638822-26314605(Top 55%)9898(Top 65%)9898(Top 440%)
20M20.00 mi1.36 mi12870-13069358-5369358-53621746(Top 82%)12879(Top 85%)12879(Top 572%)
21M21.00 mi1.00 mi13444-5749586-2289586-22819579(Top 74%)11862(Top 78%)11862(Top 527%)
35K21.75 mi0.75 mi13856-4129733-1479733-14720802(Top 78%)12380(Top 82%)12380(Top 550%)
23M23.00 mi1.25 mi14395-5399909-1769909-17620008(Top 75%)12022(Top 79%)12022(Top 534%)
24M24.00 mi1.00 mi14823-42810060-15110060-15121173(Top 80%)12494(Top 82%)12494(Top 555%)
40K24.85 mi0.85 mi15256-43310211-15110211-15121835(Top 82%)12747(Top 84%)12747(Top 566%)
25.2M25.20 mi0.35 mi15475-21910278-6710278-6722434(Top 84%)13036(Top 86%)13036(Top 579%)
Finish26.22 mi1.02 mi16016-54110498-22010498-22023518(Top 88%)13576(Top 89%)13576(Top 603%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10306

Males

8312

M45-49

8312

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

10942

Males

8648

M45-49

8648

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10306

Males

8312

M45-49

8312

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

10725

Males

8446

M45-49

8446

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10623

Males

8445

M45-49

8445

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11392

Males

8670

M45-49

8670

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

14605

Males

9898

M45-49

9898

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

21746

Males

12879

M45-49

12879

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19579

Males

11862

M45-49

11862

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20802

Males

12380

M45-49

12380

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

20008

Males

12022

M45-49

12022

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21173

Males

12494

M45-49

12494

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21835

Males

12747

M45-49

12747

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22434

Males

13036

M45-49

13036

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

23518

Males

13576

M45-49

13576

Passing Analysis

Category:
Athletes Passed
1243
Passed By
5884
Net Change
-4641
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11375
5K → 10K430201+229#11375#11146
10K → 15K37961+318#11146#10828
15K → 20K173142+31#10828#10797
20K → Half3422+12#10797#10785
Half → 25K107169-62#10785#10847
25K → 30K50767-717#10847#11564
30K → 20M41310-1306#11564#12870
20M → 21M8582-574#12870#13444
21M → 35K7419-412#13444#13856
35K → 23M11550-539#13856#14395
23M → 24M15443-428#14395#14823
24M → 40K9442-433#14823#15256
40K → 25.2M9228-219#15256#15475
25.2M → Finish7548-541#15475#16016
TOTALS12435884-4641
📊

Passing Visuals

Category:
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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