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BOSTON MARATHON 2023

Isaac Oh

Bib: 13287•M

CA

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

Start
0:00:00
Race begins
5K· 3.11 mi
24:32
Rank: #13200
Start → 5K
7:54/mi
24:32 split
10K· 6.21 mi
48:44
Rank: #13116 (+84)
5K → 10K
7:47/mi
24:12 split
15K· 9.32 mi
1:13:05
Rank: #13041 (+75)
10K → 15K
7:50/mi
24:21 split
20K· 12.43 mi
1:38:09
Rank: #13300 (-259)
15K → 20K
8:04/mi
25:04 split
Half· 13.11 mi
1:43:36
Rank: #13338 (-38)
20K → Half
7:59/mi
5:27 split
25K· 15.53 mi
2:03:26
Rank: #13432 (-94)
Half → 25K
8:11/mi
19:50 split
30K· 18.64 mi
2:30:49
Rank: #14026 (-594)
25K → 30K
8:49/mi
27:23 split
20M
2:43:32
Rank: #14387 (-361)
30K → 20M
9:21/mi
12:43 split
21M
2:53:25
Rank: #14612 (-225)
20M → 21M
9:53/mi
9:53 split
35K· 21.75 mi
2:59:25
Rank: #14522 (+90)
21M → 35K
8:01/mi
6:00 split
23M
3:09:46
Rank: #14327 (+195)
35K → 23M
8:16/mi
10:21 split
24M
3:17:50
Rank: #14192 (+135)
23M → 24M
8:04/mi
8:04 split
40K· 24.85 mi
3:24:53
Rank: #14079 (+113)
24M → 40K
8:15/mi
7:03 split
25.2M
3:27:57
Rank: #14032 (+47)
40K → 25.2M
8:54/mi
3:04 split
Finish· 26.22 mi
3:36:05
Rank: #13928 (+104)
25.2M → Finish
7:59/mi
8:08 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:36
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:52:29
Pace8:35 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:5424:327:5424:32
7:54
-
10K
6.21 mi11:17:0648:447:5124:12
7:47
-0:07
15K
9.32 mi11:41:271:13:057:5024:21
7:50
+0:03
20K
12.43 mi12:06:311:38:097:5425:04
8:04
+0:14
Half
13.11 mi12:11:581:43:367:545:27
7:59
-0:05
25K
15.53 mi12:31:482:03:267:5719:50
8:11
+0:12
30K
18.64 mi12:59:112:30:498:0527:23
8:49
+0:38
20M
20.00 mi13:11:542:43:328:1112:43
9:21
+0:32
21M
21.00 mi13:21:472:53:258:159:53
9:53
+0:32
35K
21.75 mi13:27:472:59:258:156:00
8:01
-1:52
23M
23.00 mi13:38:083:09:468:1510:21
8:16
+0:15
24M
24.00 mi13:46:123:17:508:158:04
8:04
-0:12
40K
24.85 mi13:53:153:24:538:157:03
8:15
+0:11
25.2M
25.20 mi13:56:193:27:578:153:04
8:54
+0:39
Finish
26.22 mi14:04:273:36:058:158:08
7:59
-0:55

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

7:47 /mi

Average Pace

8:15 /mi

Slowest Pace

9:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:43:02

75% of race

Time at Slower Pace

53:03

25% of race

Average Pace: 8:14 /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 mi10:52:5424:327:5424:32
7:54
#13200
10K
6.21 mi11:17:0648:447:5124:12
7:47
#13116
15K
9.32 mi11:41:271:13:057:5024:21
7:50
#13041
20K
12.43 mi12:06:311:38:097:5425:04
8:04
#13300
Half
13.11 mi12:11:581:43:367:545:27
7:59
#13338
25K
15.53 mi12:31:482:03:267:5719:50
8:11
#13432
30K
18.64 mi12:59:112:30:498:0527:23
8:49
#14026
20M
20.00 mi13:11:542:43:328:1112:43
9:21
#14387
21M
21.00 mi13:21:472:53:258:159:53
9:53
#14612
35K
21.75 mi13:27:472:59:258:156:00
8:01
#14522
23M
23.00 mi13:38:083:09:468:1510:21
8:16
#14327
24M
24.00 mi13:46:123:17:508:158:04
8:04
#14192
40K
24.85 mi13:53:153:24:538:157:03
8:15
#14079
25.2M
25.20 mi13:56:193:27:578:153:04
8:54
#14032
Finish
26.22 mi14:04:273:36:058:158:08
7:59
#13928
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi132009627962713023(Top 49%)9517(Top 63%)9517(Top 423%)
10K6.21 mi3.10 mi13116+849585+429585+4213016(Top 49%)9565(Top 63%)9565(Top 425%)
15K9.32 mi3.11 mi13041+759541+449541+4413023(Top 49%)9517(Top 63%)9517(Top 423%)
20K12.43 mi3.11 mi13300-2599625-849625-8413976(Top 52%)9864(Top 65%)9864(Top 438%)
Half13.11 mi0.68 mi13338-389632-79632-714221(Top 53%)9993(Top 66%)9993(Top 444%)
25K15.53 mi2.42 mi13432-949654-229654-2214082(Top 53%)9789(Top 65%)9789(Top 435%)
30K18.64 mi3.11 mi14026-5949845-1919845-19116145(Top 61%)10542(Top 69%)10542(Top 468%)
20M20.00 mi1.36 mi14387-3619955-1109955-11018250(Top 69%)11346(Top 75%)11346(Top 504%)
21M21.00 mi1.00 mi14612-22510038-8310038-8317549(Top 66%)11023(Top 73%)11023(Top 489%)
35K21.75 mi0.75 mi14522+909989+499989+4912259(Top 46%)8677(Top 57%)8677(Top 385%)
23M23.00 mi1.25 mi14327+1959878+1119878+11111631(Top 44%)8305(Top 55%)8305(Top 369%)
24M24.00 mi1.00 mi14192+1359806+729806+7211684(Top 44%)8252(Top 54%)8252(Top 366%)
40K24.85 mi0.85 mi14079+1139740+669740+6611659(Top 44%)8161(Top 54%)8161(Top 362%)
25.2M25.20 mi0.35 mi14032+479717+239717+2311864(Top 45%)8207(Top 54%)8207(Top 364%)
Finish26.22 mi1.02 mi13928+1049661+569661+5611976(Top 45%)8274(Top 55%)8274(Top 367%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13023

Males

9517

M45-49

9517

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13016

Males

9565

M45-49

9565

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13023

Males

9517

M45-49

9517

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13976

Males

9864

M45-49

9864

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14221

Males

9993

M45-49

9993

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

14082

Males

9789

M45-49

9789

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16145

Males

10542

M45-49

10542

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18250

Males

11346

M45-49

11346

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17549

Males

11023

M45-49

11023

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12259

Males

8677

M45-49

8677

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11631

Males

8305

M45-49

8305

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11684

Males

8252

M45-49

8252

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11659

Males

8161

M45-49

8161

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11864

Males

8207

M45-49

8207

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

11976

Males

8274

M45-49

8274

Passing Analysis

Category:
Athletes Passed
1729
Passed By
2457
Net Change
-728
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13200
5K → 10K351267+84#13200#13116
10K → 15K253178+75#13116#13041
15K → 20K106365-259#13041#13300
20K → Half2260-38#13300#13338
Half → 25K113207-94#13338#13432
25K → 30K59653-594#13432#14026
30K → 20M28389-361#14026#14387
20M → 21M26251-225#14387#14612
21M → 35K999+90#14612#14522
35K → 23M2005+195#14522#14327
23M → 24M15318+135#14327#14192
24M → 40K13118+113#14192#14079
40K → 25.2M5710+47#14079#14032
25.2M → Finish13127+104#14032#13928
TOTALS17292457-728
📊

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