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BOSTON MARATHON 2023

Grace Cho

Bib: 13300•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Masters (Masters Women)
#0 / 6539
Top 13%
Division (F40-44)
#0 / 1878
Top 25%
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
7:50/mi
24:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:48/mi
1:12:46
↑ 67↓ 78
20K· 12.43 mi
7:55/mi
1:37:23
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:42:40
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
2:01:52
↑ 66↓ 880.2%
30K· 18.64 mi
8:03/mi
2:26:54
↑ 181↓ 1480.2%
20M
8:07/mi
2:37:56
↑ 64↓ 500.2%
21M
8:23/mi
2:46:19
↑ 106↓ 241.6%
35K· 21.75 mi
7:42/mi
2:52:05
↑ 17↓ 861.7%
23M
8:02/mi
3:02:09
↑ 23↓ 630.6%
24M
7:57/mi
3:10:06
↓ 821.3%
40K· 24.85 mi
8:03/mi
3:16:59
↓ 200.3%
25.2M
8:27/mi
3:19:54
↑ 13↓ 160.2%
Finish· 26.22 mi
7:46/mi
3:27:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:40
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:45:09
Pace8:01 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4724:207:5024:20
7:50
-
10K
6.21 mi11:16:5948:327:4924:12
7:47
-0:03
15K
9.32 mi11:41:131:12:467:4824:14
7:48
+0:01
20K
12.43 mi12:05:501:37:237:5024:37
7:55
+0:07
Half
13.11 mi12:11:071:42:407:505:17
7:45
-0:10
25K
15.53 mi12:30:192:01:527:5119:12
7:55
+0:10
30K
18.64 mi12:55:212:26:547:5325:02
8:03
+0:08
20M
20.00 mi13:06:232:37:567:5411:02
8:07
+0:04
21M
21.00 mi13:14:462:46:197:558:23
8:23
+0:16
35K
21.75 mi13:20:322:52:057:555:46
7:42
-0:41
23M
23.00 mi13:30:363:02:097:5510:04
8:02
+0:20
24M
24.00 mi13:38:333:10:067:557:57
7:57
-0:05
40K
24.85 mi13:45:263:16:597:566:53
8:03
+0:06
25.2M
25.20 mi13:48:213:19:547:562:55
8:27
+0:24
Finish
26.22 mi13:56:163:27:497:567:55
7:46
-0:41

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

7:42 /mi

Average Pace

7:56 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:29

89% of race

Time at Steady Pace

22:20

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:56 /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 mi10:52:4724:207:5024:20
7:50
#12680
10K
6.21 mi11:16:5948:327:4924:12
7:47
#12802
15K
9.32 mi11:41:131:12:467:4824:14
7:48
#12758
20K
12.43 mi12:05:501:37:237:5024:37
7:55
#12733
Half
13.11 mi12:11:071:42:407:505:17
7:45
#12691
25K
15.53 mi12:30:192:01:527:5119:12
7:55
#12553
30K
18.64 mi12:55:212:26:547:5325:02
8:03
#12314
20M
20.00 mi13:06:232:37:567:5411:02
8:07
#12194
21M
21.00 mi13:14:462:46:197:558:23
8:23
#12026
35K
21.75 mi13:20:322:52:057:555:46
7:42
#11945
23M
23.00 mi13:30:363:02:097:5510:04
8:02
#11809
24M
24.00 mi13:38:333:10:067:557:57
7:57
#11755
40K
24.85 mi13:45:263:16:597:566:53
8:03
#11690
25.2M
25.20 mi13:48:213:19:547:562:55
8:27
#11644
Finish
26.22 mi13:56:163:27:497:567:55
7:46
#11556
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi126803267326712735(Top 48%)3315(Top 29%)3315(Top 177%)
10K6.21 mi3.10 mi12802-1223316-493316-4913034(Top 49%)3445(Top 30%)3445(Top 183%)
15K9.32 mi3.11 mi12758+443314+23314+212735(Top 48%)3315(Top 29%)3315(Top 177%)
20K12.43 mi3.11 mi12733+253323-93323-912819(Top 48%)3445(Top 30%)3445(Top 183%)
Half13.11 mi0.68 mi12691+423311+123311+1212277(Top 46%)3069(Top 27%)3069(Top 163%)
25K15.53 mi2.42 mi12553+1383256+553256+5512061(Top 45%)3111(Top 27%)3111(Top 166%)
30K18.64 mi3.11 mi12314+2393159+973159+9711361(Top 43%)2825(Top 25%)2825(Top 150%)
20M20.00 mi1.36 mi12194+1203100+593100+5911177(Top 42%)2818(Top 25%)2818(Top 150%)
21M21.00 mi1.00 mi12026+1683023+773023+779777(Top 37%)2286(Top 20%)2286(Top 122%)
35K21.75 mi0.75 mi11945+812990+332990+3310061(Top 38%)2399(Top 21%)2399(Top 128%)
23M23.00 mi1.25 mi11809+1362939+512939+5110070(Top 38%)2547(Top 22%)2547(Top 136%)
24M24.00 mi1.00 mi11755+542926+132926+1310913(Top 41%)3044(Top 27%)3044(Top 162%)
40K24.85 mi0.85 mi11690+652915+112915+1110401(Top 39%)2843(Top 25%)2843(Top 151%)
25.2M25.20 mi0.35 mi11644+462900+152900+159338(Top 35%)2397(Top 21%)2397(Top 128%)
Finish26.22 mi1.02 mi11556+882886+142886+1410476(Top 39%)2929(Top 26%)2929(Top 156%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12735

Females

3315

F40-44

3315

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13034

Females

3445

F40-44

3445

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12735

Females

3315

F40-44

3315

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12819

Females

3445

F40-44

3445

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12277

Females

3069

F40-44

3069

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12061

Females

3111

F40-44

3111

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11361

Females

2825

F40-44

2825

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11177

Females

2818

F40-44

2818

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

9777

Females

2286

F40-44

2286

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10061

Females

2399

F40-44

2399

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10070

Females

2547

F40-44

2547

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10913

Females

3044

F40-44

3044

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10401

Females

2843

F40-44

2843

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9338

Females

2397

F40-44

2397

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10476

Females

2929

F40-44

2929

Passing Analysis

Category:
Athletes Passed
2216
Passed By
1092
Net Change
+1124
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12680
5K → 10K242364-122#12680#12802
10K → 15K227183+44#12802#12758
15K → 20K196171+25#12758#12733
20K → Half6119+42#12733#12691
Half → 25K20466+138#12691#12553
25K → 30K32384+239#12553#12314
30K → 20M15737+120#12314#12194
20M → 21M18416+168#12194#12026
21M → 35K898+81#12026#11945
35K → 23M16630+136#11945#11809
23M → 24M9339+54#11809#11755
24M → 40K9429+65#11755#11690
40K → 25.2M537+46#11690#11644
25.2M → Finish12739+88#11644#11556
TOTALS22161092+1124
📊

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