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BOSTON MARATHON 2023

Zosia Dunn

Bib: 12217•F

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 24%
Gender (Female)
#0 / 11423
Top 7%
Division (F18-39)
#0 / 4884
Top 12%
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
6:47/mi
21:04
↑ 97↓ 3451.5%
10K· 6.21 mi
6:42/mi
41:54
↑ 79↓ 1380.4%
15K· 9.32 mi
6:51/mi
1:03:11
↑ 67↓ 78
20K· 12.43 mi
7:09/mi
1:25:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:30:23
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:48:10
↑ 66↓ 880.2%
30K· 18.64 mi
7:34/mi
2:11:40
↑ 181↓ 1480.2%
20M
7:41/mi
2:22:07
↑ 64↓ 500.2%
21M
8:03/mi
2:30:10
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:35:51
↑ 17↓ 861.7%
23M
7:52/mi
2:45:42
↑ 23↓ 630.6%
24M
7:35/mi
2:53:17
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:00:00
↓ 200.3%
25.2M
8:16/mi
3:02:51
↑ 13↓ 160.2%
Finish· 26.22 mi
7:26/mi
3:10:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:23
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:40:03
Pace7:38 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3821:046:4721:04
6:47
-
10K
6.21 mi11:09:2841:546:4520:50
6:42
-0:05
15K
9.32 mi11:30:451:03:116:4721:17
6:51
+0:09
20K
12.43 mi11:52:581:25:246:5222:13
7:09
+0:18
Half
13.11 mi11:57:571:30:236:544:59
7:18
+0:09
25K
15.53 mi12:15:441:48:106:5817:47
7:20
+0:02
30K
18.64 mi12:39:142:11:407:0423:30
7:34
+0:14
20M
20.00 mi12:49:412:22:077:0610:27
7:41
+0:07
21M
21.00 mi12:57:442:30:107:098:03
8:03
+0:22
35K
21.75 mi13:03:252:35:517:105:41
7:36
-0:27
23M
23.00 mi13:13:162:45:427:129:51
7:52
+0:16
24M
24.00 mi13:20:512:53:177:137:35
7:35
-0:17
40K
24.85 mi13:27:343:00:007:156:43
7:51
+0:16
25.2M
25.20 mi13:30:253:02:517:152:51
8:16
+0:25
Finish
26.22 mi13:38:003:10:267:167:35
7:26
-0:50

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

6:42 /mi

Average Pace

7:16 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:10

57% of race

Time at Steady Pace

54:48

29% of race

Time at Slower Pace

27:28

14% of race

Average Pace: 7:16 /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 mi10:48:3821:046:4721:04
6:47
#4522
10K
6.21 mi11:09:2841:546:4520:50
6:42
#4423
15K
9.32 mi11:30:451:03:116:4721:17
6:51
#4800
20K
12.43 mi11:52:581:25:246:5222:13
7:09
#5503
Half
13.11 mi11:57:571:30:236:544:59
7:18
#5688
25K
15.53 mi12:15:441:48:106:5817:47
7:20
#5993
30K
18.64 mi12:39:142:11:407:0423:30
7:34
#6209
20M
20.00 mi12:49:412:22:077:0610:27
7:41
#6269
21M
21.00 mi12:57:442:30:107:098:03
8:03
#6292
35K
21.75 mi13:03:252:35:517:105:41
7:36
#6348
23M
23.00 mi13:13:162:45:427:129:51
7:52
#6433
24M
24.00 mi13:20:512:53:177:137:35
7:35
#6464
40K
24.85 mi13:27:343:00:007:156:43
7:51
#6490
25.2M
25.20 mi13:30:253:02:517:152:51
8:16
#6476
Finish
26.22 mi13:38:003:10:267:167:35
7:26
#6514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi45222992995593(Top 21%)450(Top 4%)450(Top 9%)
10K6.21 mi3.10 mi4423+99280+19280+194414(Top 17%)283(Top 2%)283(Top 6%)
15K9.32 mi3.11 mi4800-377330-50330-505593(Top 21%)450(Top 4%)450(Top 9%)
20K12.43 mi3.11 mi5503-703422-92422-926824(Top 26%)734(Top 6%)734(Top 15%)
Half13.11 mi0.68 mi5688-185445-23445-238666(Top 33%)1326(Top 12%)1326(Top 27%)
25K15.53 mi2.42 mi5993-305510-65510-657514(Top 28%)1012(Top 9%)1012(Top 21%)
30K18.64 mi3.11 mi6209-216583-73583-737680(Top 29%)1170(Top 10%)1170(Top 24%)
20M20.00 mi1.36 mi6269-60606-23606-238116(Top 30%)1437(Top 13%)1437(Top 29%)
21M21.00 mi1.00 mi6292-23622-16622-167688(Top 29%)1373(Top 12%)1373(Top 28%)
35K21.75 mi0.75 mi6348-56641-19641-199263(Top 35%)2016(Top 18%)2016(Top 41%)
23M23.00 mi1.25 mi6433-85682-41682-418869(Top 33%)1951(Top 17%)1951(Top 40%)
24M24.00 mi1.00 mi6464-31703-21703-218295(Top 31%)1787(Top 16%)1787(Top 37%)
40K24.85 mi0.85 mi6490-26723-20723-209049(Top 34%)2181(Top 19%)2181(Top 45%)
25.2M25.20 mi0.35 mi6476+14724-1724-18116(Top 30%)1843(Top 16%)1843(Top 38%)
Finish26.22 mi1.02 mi6514-38750-26750-268097(Top 30%)1861(Top 16%)1861(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

5593

Females

450

F18-39

450

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4414

Females

283

F18-39

283

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

5593

Females

450

F18-39

450

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

6824

Females

734

F18-39

734

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8666

Females

1326

F18-39

1326

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7514

Females

1012

F18-39

1012

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

7680

Females

1170

F18-39

1170

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8116

Females

1437

F18-39

1437

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7688

Females

1373

F18-39

1373

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9263

Females

2016

F18-39

2016

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

8869

Females

1951

F18-39

1951

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8295

Females

1787

F18-39

1787

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9049

Females

2181

F18-39

2181

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8116

Females

1843

F18-39

1843

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8097

Females

1861

F18-39

1861

Passing Analysis

Category:
Athletes Passed
708
Passed By
2700
Net Change
-1992
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4522
5K → 10K259160+99#4522#4423
10K → 15K37414-377#4423#4800
15K → 20K14717-703#4800#5503
20K → Half1186-185#5503#5688
Half → 25K17322-305#5688#5993
25K → 30K69285-216#5993#6209
30K → 20M42102-60#6209#6269
20M → 21M4871-23#6269#6292
21M → 35K1975-56#6292#6348
35K → 23M47132-85#6348#6433
23M → 24M4879-31#6433#6464
24M → 40K4066-26#6464#6490
40K → 25.2M3117+14#6490#6476
25.2M → Finish3674-38#6476#6514
TOTALS7082700-1992
📊

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