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BOSTON MARATHON 2023

Claire Gelbart

Bib: 12807•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 31%
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
7:47/mi
24:10
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
47:42
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:10:56
↑ 67↓ 78
20K· 12.43 mi
7:30/mi
1:34:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:39:19
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
1:57:38
↑ 66↓ 880.2%
30K· 18.64 mi
7:47/mi
2:21:49
↑ 181↓ 1480.2%
20M
7:52/mi
2:32:31
↑ 64↓ 500.2%
21M
8:17/mi
2:40:48
↑ 106↓ 241.6%
35K· 21.75 mi
7:46/mi
2:46:37
↑ 17↓ 861.7%
23M
8:01/mi
2:56:39
↑ 23↓ 630.6%
24M
7:47/mi
3:04:26
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:11:06
↓ 200.3%
25.2M
8:36/mi
3:14:04
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:21:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:19
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:42:31
Pace7:49 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0824:107:4724:10
7:47
-
10K
6.21 mi11:15:4047:427:4123:32
7:34
-0:13
15K
9.32 mi11:38:541:10:567:3723:14
7:29
-0:05
20K
12.43 mi12:02:131:34:157:3523:19
7:30
+0:01
Half
13.11 mi12:07:171:39:197:355:04
7:26
-0:04
25K
15.53 mi12:25:361:57:387:3418:19
7:33
+0:07
30K
18.64 mi12:49:472:21:497:3624:11
7:47
+0:14
20M
20.00 mi13:00:292:32:317:3810:42
7:52
+0:05
21M
21.00 mi13:08:462:40:487:398:17
8:17
+0:25
35K
21.75 mi13:14:352:46:377:405:49
7:46
-0:31
23M
23.00 mi13:24:372:56:397:4110:02
8:01
+0:15
24M
24.00 mi13:32:243:04:267:417:47
7:47
-0:14
40K
24.85 mi13:39:043:11:067:416:40
7:48
+0:01
25.2M
25.20 mi13:42:023:14:047:422:58
8:36
+0:48
Finish
26.22 mi13:49:483:21:507:427:46
7:37
-0:59

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

7:26 /mi

Average Pace

7:42 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:35

94% of race

Time at Steady Pace

11:15

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:42 /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 mi10:52:0824:107:4724:10
7:47
#12165
10K
6.21 mi11:15:4047:427:4123:32
7:34
#11588
15K
9.32 mi11:38:541:10:567:3723:14
7:29
#11021
20K
12.43 mi12:02:131:34:157:3523:19
7:30
#10559
Half
13.11 mi12:07:171:39:197:355:04
7:26
#10503
25K
15.53 mi12:25:361:57:387:3418:19
7:33
#10257
30K
18.64 mi12:49:472:21:497:3624:11
7:47
#10031
20M
20.00 mi13:00:292:32:317:3810:42
7:52
#9942
21M
21.00 mi13:08:462:40:487:398:17
8:17
#9874
35K
21.75 mi13:14:352:46:377:405:49
7:46
#9893
23M
23.00 mi13:24:372:56:397:4110:02
8:01
#9847
24M
24.00 mi13:32:243:04:267:417:47
7:47
#9814
40K
24.85 mi13:39:043:11:067:416:40
7:48
#9751
25.2M
25.20 mi13:42:023:14:047:422:58
8:36
#9731
Finish
26.22 mi13:49:483:21:507:427:46
7:37
#9674
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi121652955295510012(Top 38%)1847(Top 16%)1847(Top 38%)
10K6.21 mi3.10 mi11588+5772646+3092646+30911100(Top 42%)2370(Top 21%)2370(Top 49%)
15K9.32 mi3.11 mi11021+5672343+3032343+30310012(Top 38%)1847(Top 16%)1847(Top 38%)
20K12.43 mi3.11 mi10559+4622102+2412102+2419364(Top 35%)1631(Top 14%)1631(Top 33%)
Half13.11 mi0.68 mi10503+562069+332069+339683(Top 36%)1754(Top 15%)1754(Top 36%)
25K15.53 mi2.42 mi10257+2461978+911978+919218(Top 35%)1644(Top 14%)1644(Top 34%)
30K18.64 mi3.11 mi10031+2261905+731905+739245(Top 35%)1817(Top 16%)1817(Top 37%)
20M20.00 mi1.36 mi9942+891892+131892+139413(Top 35%)1981(Top 17%)1981(Top 41%)
21M21.00 mi1.00 mi9874+681889+31889+39160(Top 34%)1992(Top 17%)1992(Top 41%)
35K21.75 mi0.75 mi9893-191914-251914-2510491(Top 39%)2591(Top 23%)2591(Top 53%)
23M23.00 mi1.25 mi9847+461925-111925-119848(Top 37%)2432(Top 21%)2432(Top 50%)
24M24.00 mi1.00 mi9814+331944-191944-199672(Top 36%)2421(Top 21%)2421(Top 50%)
40K24.85 mi0.85 mi9751+631942+21942+28688(Top 33%)2024(Top 18%)2024(Top 41%)
25.2M25.20 mi0.35 mi9731+201943-11943-110193(Top 38%)2773(Top 24%)2773(Top 57%)
Finish26.22 mi1.02 mi9674+571955-121955-129439(Top 35%)2444(Top 21%)2444(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10012

Females

1847

F18-39

1847

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11100

Females

2370

F18-39

2370

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10012

Females

1847

F18-39

1847

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9364

Females

1631

F18-39

1631

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

9683

Females

1754

F18-39

1754

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9218

Females

1644

F18-39

1644

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9245

Females

1817

F18-39

1817

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

9413

Females

1981

F18-39

1981

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9160

Females

1992

F18-39

1992

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10491

Females

2591

F18-39

2591

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9848

Females

2432

F18-39

2432

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9672

Females

2421

F18-39

2421

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8688

Females

2024

F18-39

2024

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10193

Females

2773

F18-39

2773

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9439

Females

2444

F18-39

2444

Passing Analysis

Category:
Athletes Passed
3076*
Passed By
584
Net Change
+2491
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12165
5K → 10K686109+577#12165#11588
10K → 15K59528+567#11588#11021
15K → 20K48018+462#11021#10559
20K → Half6610+56#10559#10503
Half → 25K26822+246#10503#10257
25K → 30K279*53+226#10257#10031
30K → 20M133*44+89#10031#9942
20M → 21M12051+68#9942#9874
21M → 35K3150-19#9874#9893
35K → 23M10256+46#9893#9847
23M → 24M7542+33#9847#9814
24M → 40K97*34+63#9814#9751
40K → 25.2M4525+20#9751#9731
25.2M → Finish99*42+57#9731#9674
TOTALS3076*584+2491

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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