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BOSTON MARATHON 2023

Bok Ja Cho

Bib: 24226•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
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
10:20/mi
32:06
↑ 97↓ 3451.5%
10K· 6.21 mi
10:01/mi
1:03:14
↑ 79↓ 1380.4%
15K· 9.32 mi
10:04/mi
1:34:29
↑ 67↓ 78
20K· 12.43 mi
10:19/mi
2:06:31
↑ 106↓ 860.1%
Half· 13.11 mi
11:01/mi
2:14:02
↑ 19↓ 370.5%
25K· 15.53 mi
9:58/mi
2:38:11
↑ 66↓ 880.2%
30K· 18.64 mi
10:41/mi
3:11:24
↑ 181↓ 1480.2%
20M
10:10/mi
3:25:13
↑ 64↓ 500.2%
21M
11:12/mi
3:36:25
↑ 106↓ 241.6%
35K· 21.75 mi
10:32/mi
3:44:18
↑ 17↓ 861.7%
23M
10:03/mi
3:56:53
↑ 23↓ 630.6%
24M
9:56/mi
4:06:49
↓ 821.3%
40K· 24.85 mi
10:34/mi
4:15:51
↓ 200.3%
25.2M
12:54/mi
4:20:18
↑ 13↓ 160.2%
Finish· 26.22 mi
10:08/mi
4:30:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:14:02
Pace10:13 /mi
2nd Half
Distance13.11 mi
Time2:16:36
Pace10:25 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:0832:0610:2032:06
10:20
-
10K
6.21 mi12:26:161:03:1410:1131:08
10:01
-0:19
15K
9.32 mi12:57:311:34:2910:0831:15
10:04
+0:03
20K
12.43 mi13:29:332:06:3110:1132:02
10:19
+0:15
Half
13.11 mi13:37:042:14:0210:137:31
11:01
+0:42
25K
15.53 mi14:01:132:38:1110:1124:09
9:58
-1:03
30K
18.64 mi14:34:263:11:2410:1633:13
10:41
+0:43
20M
20.00 mi14:48:153:25:1310:1613:49
10:10
-0:31
21M
21.00 mi14:59:273:36:2510:1811:12
11:12
+1:02
35K
21.75 mi15:07:203:44:1810:197:53
10:32
-0:40
23M
23.00 mi15:19:553:56:5310:1812:35
10:03
-0:29
24M
24.00 mi15:29:514:06:4910:179:56
9:56
-0:07
40K
24.85 mi15:38:534:15:5110:189:02
10:34
+0:38
25.2M
25.20 mi15:43:204:20:1810:204:27
12:54
+2:20
Finish
26.22 mi15:53:404:30:3810:2010:20
10:08
-2:46

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

9:56 /mi

Average Pace

10:20 /mi

Slowest Pace

12:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

9:56

4% of race

Time at Steady Pace

3:57:32

88% of race

Time at Slower Pace

23:10

9% of race

Average Pace: 10:19 /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 mi11:55:0832:0610:2032:06
10:20
#24299
10K
6.21 mi12:26:161:03:1410:1131:08
10:01
#24009
15K
9.32 mi12:57:311:34:2910:0831:15
10:04
#23877
20K
12.43 mi13:29:332:06:3110:1132:02
10:19
#23782
Half
13.11 mi13:37:042:14:0210:137:31
11:01
#23846
25K
15.53 mi14:01:132:38:1110:1124:09
9:58
#23574
30K
18.64 mi14:34:263:11:2410:1633:13
10:41
#23369
20M
20.00 mi14:48:153:25:1310:1613:49
10:10
#23201
21M
21.00 mi14:59:273:36:2510:1811:12
11:12
#23106
35K
21.75 mi15:07:203:44:1810:197:53
10:32
#23084
23M
23.00 mi15:19:553:56:5310:1812:35
10:03
#22914
24M
24.00 mi15:29:514:06:4910:179:56
9:56
#22814
40K
24.85 mi15:38:534:15:5110:189:02
10:34
#22772
25.2M
25.20 mi15:43:204:20:1810:204:27
12:54
#22796
Finish
26.22 mi15:53:404:30:3810:2010:20
10:08
#22778
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi24299100391003923618(Top 89%)9674(Top 85%)9674(Top 1836%)
10K6.21 mi3.10 mi24009+2909897+1429897+14223731(Top 89%)9750(Top 85%)9750(Top 1850%)
15K9.32 mi3.11 mi23877+1329822+759822+7523618(Top 89%)9674(Top 85%)9674(Top 1836%)
20K12.43 mi3.11 mi23782+959768+549768+5423493(Top 88%)9627(Top 84%)9627(Top 1827%)
Half13.11 mi0.68 mi23846-649801-339801-3324967(Top 94%)10479(Top 92%)10479(Top 1988%)
25K15.53 mi2.42 mi23574+2729660+1419660+14122139(Top 83%)8916(Top 78%)8916(Top 1692%)
30K18.64 mi3.11 mi23369+2059574+869574+8622593(Top 85%)9239(Top 81%)9239(Top 1753%)
20M20.00 mi1.36 mi23201+1689498+769498+7620940(Top 79%)8383(Top 73%)8383(Top 1591%)
21M21.00 mi1.00 mi23106+959465+339465+3321280(Top 80%)8614(Top 75%)8614(Top 1635%)
35K21.75 mi0.75 mi23084+229459+69459+622467(Top 84%)9305(Top 81%)9305(Top 1766%)
23M23.00 mi1.25 mi22914+1709382+779382+7720154(Top 76%)8051(Top 70%)8051(Top 1528%)
24M24.00 mi1.00 mi22814+1009342+409342+4020620(Top 77%)8343(Top 73%)8343(Top 1583%)
40K24.85 mi0.85 mi22772+429321+219321+2121390(Top 80%)8835(Top 77%)8835(Top 1676%)
25.2M25.20 mi0.35 mi22796-249334-139334-1323856(Top 90%)10115(Top 89%)10115(Top 1919%)
Finish26.22 mi1.02 mi22778+189331+39331+322149(Top 83%)9199(Top 81%)9199(Top 1746%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23618

Females

9674

F60-64

9674

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23731

Females

9750

F60-64

9750

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23618

Females

9674

F60-64

9674

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

23493

Females

9627

F60-64

9627

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

24967

Females

10479

F60-64

10479

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

22139

Females

8916

F60-64

8916

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22593

Females

9239

F60-64

9239

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

20940

Females

8383

F60-64

8383

20M→21M

20.0 - 21.0 mi

Top 80%
×8story building
+106ft-24ft

Overall

21280

Females

8614

F60-64

8614

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

22467

Females

9305

F60-64

9305

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

20154

Females

8051

F60-64

8051

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20620

Females

8343

F60-64

8343

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21390

Females

8835

F60-64

8835

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

23856

Females

10115

F60-64

10115

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22149

Females

9199

F60-64

9199

Passing Analysis

Category:
Athletes Passed
1935
Passed By
414
Net Change
+1521
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24299
5K → 10K38292+290#24299#24009
10K → 15K19361+132#24009#23877
15K → 20K15762+95#23877#23782
20K → Half1074-64#23782#23846
Half → 25K2808+272#23846#23574
25K → 30K22520+205#23574#23369
30K → 20M1713+168#23369#23201
20M → 21M10611+95#23201#23106
21M → 35K3917+22#23106#23084
35K → 23M1700+170#23084#22914
23M → 24M1011+100#22914#22814
24M → 40K5210+42#22814#22772
40K → 25.2M731-24#22772#22796
25.2M → Finish4224+18#22796#22778
TOTALS1935414+1521
📊

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