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BOSTON MARATHON 2023

Grace Larkin

Bib: 16999•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
9:14/mi
28:42
↑ 97↓ 3451.5%
10K· 6.21 mi
9:38/mi
58:38
↑ 79↓ 1380.4%
15K· 9.32 mi
9:33/mi
1:28:18
↑ 67↓ 78
20K· 12.43 mi
9:56/mi
1:59:11
↑ 106↓ 860.1%
Half· 13.11 mi
9:21/mi
2:05:34
↑ 19↓ 370.5%
25K· 15.53 mi
9:35/mi
2:28:47
↑ 66↓ 880.2%
30K· 18.64 mi
10:07/mi
3:00:12
↑ 181↓ 1480.2%
20M
10:00/mi
3:13:48
↑ 64↓ 500.2%
21M
10:11/mi
3:23:59
↑ 106↓ 241.6%
35K· 21.75 mi
9:29/mi
3:31:05
↑ 17↓ 861.7%
23M
9:47/mi
3:43:20
↑ 23↓ 630.6%
24M
9:18/mi
3:52:38
↓ 821.3%
40K· 24.85 mi
8:56/mi
4:00:16
↓ 200.3%
25.2M
9:31/mi
4:03:33
↑ 13↓ 160.2%
Finish· 26.22 mi
8:24/mi
4:12:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:05:34
Pace9:35 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:06:33
Pace9:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4428:429:1428:42
9:14
-
10K
6.21 mi11:48:4058:389:2629:56
9:38
+0:24
15K
9.32 mi12:18:201:28:189:2829:40
9:33
-0:05
20K
12.43 mi12:49:131:59:119:3530:53
9:56
+0:23
Half
13.11 mi12:55:362:05:349:356:23
9:21
-0:35
25K
15.53 mi13:18:492:28:479:3523:13
9:35
+0:14
30K
18.64 mi13:50:143:00:129:4031:25
10:07
+0:32
20M
20.00 mi14:03:503:13:489:4113:36
10:00
-0:07
21M
21.00 mi14:14:013:23:599:4310:11
10:11
+0:11
35K
21.75 mi14:21:073:31:059:427:06
9:29
-0:42
23M
23.00 mi14:33:223:43:209:4312:15
9:47
+0:18
24M
24.00 mi14:42:403:52:389:429:18
9:18
-0:29
40K
24.85 mi14:50:184:00:169:407:38
8:56
-0:22
25.2M
25.20 mi14:53:354:03:339:403:17
9:31
+0:35
Finish
26.22 mi15:02:094:12:079:378:34
8:24
-1:07

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

8:24 /mi

Average Pace

9:37 /mi

Slowest Pace

10:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

54:12

21% of race

Time at Steady Pace

1:39:35

39% of race

Time at Slower Pace

1:38:20

39% of race

Average Pace: 9:37 /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 mi11:18:4428:429:1428:42
9:14
#21331
10K
6.21 mi11:48:4058:389:2629:56
9:38
#22160
15K
9.32 mi12:18:201:28:189:2829:40
9:33
#22214
20K
12.43 mi12:49:131:59:119:3530:53
9:56
#22362
Half
13.11 mi12:55:362:05:349:356:23
9:21
#22335
25K
15.53 mi13:18:492:28:479:3523:13
9:35
#22126
30K
18.64 mi13:50:143:00:129:4031:25
10:07
#21965
20M
20.00 mi14:03:503:13:489:4113:36
10:00
#21847
21M
21.00 mi14:14:013:23:599:4310:11
10:11
#21700
35K
21.75 mi14:21:073:31:059:427:06
9:29
#21622
23M
23.00 mi14:33:223:43:209:4312:15
9:47
#21480
24M
24.00 mi14:42:403:52:389:429:18
9:18
#21351
40K
24.85 mi14:50:184:00:169:407:38
8:56
#21162
25.2M
25.20 mi14:53:354:03:339:403:17
9:31
#21094
Finish
26.22 mi15:02:094:12:079:378:34
8:24
#20892
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi213318543854322390(Top 84%)9005(Top 79%)9005(Top 184%)
10K6.21 mi3.10 mi22160-8298930-3878930-38722890(Top 86%)9280(Top 81%)9280(Top 190%)
15K9.32 mi3.11 mi22214-548942-128942-1222390(Top 84%)9005(Top 79%)9005(Top 184%)
20K12.43 mi3.11 mi22362-1489010-689010-6822755(Top 85%)9220(Top 81%)9220(Top 189%)
Half13.11 mi0.68 mi22335+278998+128998+1221704(Top 82%)8629(Top 76%)8629(Top 177%)
25K15.53 mi2.42 mi22126+2098898+1008898+10021077(Top 79%)8307(Top 73%)8307(Top 170%)
30K18.64 mi3.11 mi21965+1618818+808818+8021313(Top 80%)8524(Top 75%)8524(Top 175%)
20M20.00 mi1.36 mi21847+1188758+608758+6020517(Top 77%)8144(Top 71%)8144(Top 167%)
21M21.00 mi1.00 mi21700+1478683+758683+7518677(Top 70%)7156(Top 63%)7156(Top 147%)
35K21.75 mi0.75 mi21622+788655+288655+2819849(Top 75%)7843(Top 69%)7843(Top 161%)
23M23.00 mi1.25 mi21480+1428588+678588+6719405(Top 73%)7637(Top 67%)7637(Top 156%)
24M24.00 mi1.00 mi21351+1298536+528536+5218488(Top 69%)7165(Top 63%)7165(Top 147%)
40K24.85 mi0.85 mi21162+1898444+928444+9215815(Top 59%)5759(Top 50%)5759(Top 118%)
25.2M25.20 mi0.35 mi21094+688412+328412+3215395(Top 58%)5556(Top 49%)5556(Top 114%)
Finish26.22 mi1.02 mi20892+2028310+1028310+10214838(Top 56%)5187(Top 45%)5187(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22390

Females

9005

F18-39

9005

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22890

Females

9280

F18-39

9280

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22390

Females

9005

F18-39

9005

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

22755

Females

9220

F18-39

9220

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21704

Females

8629

F18-39

8629

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

21077

Females

8307

F18-39

8307

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21313

Females

8524

F18-39

8524

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20517

Females

8144

F18-39

8144

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

18677

Females

7156

F18-39

7156

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

19849

Females

7843

F18-39

7843

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19405

Females

7637

F18-39

7637

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18488

Females

7165

F18-39

7165

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15815

Females

5759

F18-39

5759

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15395

Females

5556

F18-39

5556

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14838

Females

5187

F18-39

5187

Passing Analysis

Category:
Athletes Passed
1878
Passed By
1439
Net Change
+439
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21331
5K → 10K38867-829#21331#22160
10K → 15K151205-54#22160#22214
15K → 20K83231-148#22214#22362
20K → Half4114+27#22362#22335
Half → 25K22516+209#22335#22126
25K → 30K21958+161#22126#21965
30K → 20M13719+118#21965#21847
20M → 21M1514+147#21847#21700
21M → 35K857+78#21700#21622
35K → 23M15311+142#21622#21480
23M → 24M1334+129#21480#21351
24M → 40K1901+189#21351#21162
40K → 25.2M680+68#21162#21094
25.2M → Finish2042+202#21094#20892
TOTALS18781439+439
📊

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