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BOSTON MARATHON 2023

Dorothy Todd

Bib: 18766•F

TX

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
8:32/mi
26:32
↑ 97↓ 3451.5%
10K· 6.21 mi
8:40/mi
53:28
↑ 79↓ 1380.4%
15K· 9.32 mi
8:50/mi
1:20:56
↑ 67↓ 78
20K· 12.43 mi
8:38/mi
1:47:46
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:53:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:14:47
↑ 66↓ 880.2%
30K· 18.64 mi
9:22/mi
2:43:54
↑ 181↓ 1480.2%
20M
9:12/mi
2:56:24
↑ 64↓ 500.2%
21M
10:26/mi
3:06:50
↑ 106↓ 241.6%
35K· 21.75 mi
8:24/mi
3:13:07
↑ 17↓ 861.7%
23M
8:42/mi
3:24:00
↑ 23↓ 630.6%
24M
8:55/mi
3:32:55
↓ 821.3%
40K· 24.85 mi
9:12/mi
3:40:47
↓ 200.3%
25.2M
9:20/mi
3:44:00
↑ 13↓ 160.2%
Finish· 26.22 mi
8:31/mi
3:52:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:27
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time1:59:14
Pace9:06 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5126:328:3226:32
8:32
-
10K
6.21 mi11:44:4753:288:3626:56
8:40
+0:08
15K
9.32 mi12:12:151:20:568:4127:28
8:50
+0:10
20K
12.43 mi12:39:051:47:468:4026:50
8:38
-0:12
Half
13.11 mi12:44:461:53:278:395:41
8:20
-0:18
25K
15.53 mi13:06:062:14:478:4121:20
8:48
+0:28
30K
18.64 mi13:35:132:43:548:4829:07
9:22
+0:34
20M
20.00 mi13:47:432:56:248:4912:30
9:12
-0:10
21M
21.00 mi13:58:093:06:508:5410:26
10:26
+1:14
35K
21.75 mi14:04:263:13:078:536:17
8:24
-2:02
23M
23.00 mi14:15:193:24:008:5210:53
8:42
+0:18
24M
24.00 mi14:24:143:32:558:528:55
8:55
+0:13
40K
24.85 mi14:32:063:40:478:537:52
9:12
+0:17
25.2M
25.20 mi14:35:193:44:008:533:13
9:20
+0:08
Finish
26.22 mi14:44:003:52:418:538:41
8:31
-0:49

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

8:20 /mi

Average Pace

8:53 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

47:11

20% of race

Time at Steady Pace

2:02:22

53% of race

Time at Slower Pace

1:03:08

27% of race

Average Pace: 8:52 /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 mi11:17:5126:328:3226:32
8:32
#17853
10K
6.21 mi11:44:4753:288:3626:56
8:40
#18548
15K
9.32 mi12:12:151:20:568:4127:28
8:50
#18955
20K
12.43 mi12:39:051:47:468:4026:50
8:38
#18654
Half
13.11 mi12:44:461:53:278:395:41
8:20
#18545
25K
15.53 mi13:06:062:14:478:4121:20
8:48
#18439
30K
18.64 mi13:35:132:43:548:4829:07
9:22
#18533
20M
20.00 mi13:47:432:56:248:4912:30
9:12
#18444
21M
21.00 mi13:58:093:06:508:5410:26
10:26
#18533
35K
21.75 mi14:04:263:13:078:536:17
8:24
#18377
23M
23.00 mi14:15:193:24:008:5210:53
8:42
#18149
24M
24.00 mi14:24:143:32:558:528:55
8:55
#18105
40K
24.85 mi14:32:063:40:478:537:52
9:12
#18066
25.2M
25.20 mi14:35:193:44:008:533:13
9:20
#18009
Finish
26.22 mi14:44:003:52:418:538:41
8:31
#17922
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi178536458645819736(Top 74%)7523(Top 66%)7523(Top 154%)
10K6.21 mi3.10 mi18548-6956856-3986856-39819250(Top 72%)7232(Top 63%)7232(Top 148%)
15K9.32 mi3.11 mi18955-4077104-2487104-24819736(Top 74%)7523(Top 66%)7523(Top 154%)
20K12.43 mi3.11 mi18654+3016905+1996905+19917733(Top 67%)6363(Top 56%)6363(Top 130%)
Half13.11 mi0.68 mi18545+1096831+746831+7416748(Top 63%)5759(Top 50%)5759(Top 118%)
25K15.53 mi2.42 mi18439+1066793+386793+3817956(Top 67%)6535(Top 57%)6535(Top 134%)
30K18.64 mi3.11 mi18533-946889-966889-9618909(Top 71%)7148(Top 63%)7148(Top 146%)
20M20.00 mi1.36 mi18444+896837+526837+5217558(Top 66%)6486(Top 57%)6486(Top 133%)
21M21.00 mi1.00 mi18533-896895-586895-5819378(Top 73%)7562(Top 66%)7562(Top 155%)
35K21.75 mi0.75 mi18377+1566823+726823+7214781(Top 56%)4995(Top 44%)4995(Top 102%)
23M23.00 mi1.25 mi18149+2286699+1246699+12414372(Top 54%)4845(Top 42%)4845(Top 99%)
24M24.00 mi1.00 mi18105+446691+86691+816872(Top 63%)6287(Top 55%)6287(Top 129%)
40K24.85 mi0.85 mi18066+396679+126679+1217114(Top 64%)6468(Top 57%)6468(Top 132%)
25.2M25.20 mi0.35 mi18009+576648+316648+3114439(Top 54%)5009(Top 44%)5009(Top 103%)
Finish26.22 mi1.02 mi17922+876607+416607+4115580(Top 59%)5585(Top 49%)5585(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19736

Females

7523

F18-39

7523

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19250

Females

7232

F18-39

7232

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19736

Females

7523

F18-39

7523

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17733

Females

6363

F18-39

6363

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16748

Females

5759

F18-39

5759

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17956

Females

6535

F18-39

6535

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

18909

Females

7148

F18-39

7148

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17558

Females

6486

F18-39

6486

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19378

Females

7562

F18-39

7562

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

14781

Females

4995

F18-39

4995

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14372

Females

4845

F18-39

4845

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16872

Females

6287

F18-39

6287

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

17114

Females

6468

F18-39

6468

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14439

Females

5009

F18-39

5009

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15580

Females

5585

F18-39

5585

Passing Analysis

Category:
Athletes Passed
1849
Passed By
1918
Net Change
-69
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17853
5K → 10K107802-695#17853#18548
10K → 15K68475-407#18548#18955
15K → 20K34443+301#18955#18654
20K → Half1112+109#18654#18545
Half → 25K18478+106#18545#18439
25K → 30K147241-94#18439#18533
30K → 20M13647+89#18533#18444
20M → 21M53142-89#18444#18533
21M → 35K1571+156#18533#18377
35K → 23M2302+228#18377#18149
23M → 24M7632+44#18149#18105
24M → 40K6627+39#18105#18066
40K → 25.2M614+57#18066#18009
25.2M → Finish10922+87#18009#17922
TOTALS18491918-69
📊

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