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BOSTON MARATHON 2023

Chelsea Doran

Bib: 16870•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Division (F18-39)
#0 / 4884
Top 32%
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
7:45/mi
24:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
47:46
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:11:00
↑ 67↓ 78
20K· 12.43 mi
7:28/mi
1:34:12
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:39:12
↑ 19↓ 370.5%
25K· 15.53 mi
7:31/mi
1:57:26
↑ 66↓ 880.2%
30K· 18.64 mi
7:49/mi
2:21:42
↑ 181↓ 1480.2%
20M
7:52/mi
2:32:24
↑ 64↓ 500.2%
21M
8:26/mi
2:40:50
↑ 106↓ 241.6%
35K· 21.75 mi
7:52/mi
2:46:43
↑ 17↓ 861.7%
23M
7:59/mi
2:56:43
↑ 23↓ 630.6%
24M
7:56/mi
3:04:39
↓ 821.3%
40K· 24.85 mi
8:12/mi
3:11:40
↓ 200.3%
25.2M
8:45/mi
3:14:41
↑ 13↓ 160.2%
Finish· 26.22 mi
7:40/mi
3:22:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:12
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:43:18
Pace7:53 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2224:047:4524:04
7:45
-
10K
6.21 mi11:38:0447:467:4123:42
7:38
-0:07
15K
9.32 mi12:01:181:11:007:3723:14
7:29
-0:09
20K
12.43 mi12:24:301:34:127:3523:12
7:28
-0:01
Half
13.11 mi12:29:301:39:127:345:00
7:20
-0:08
25K
15.53 mi12:47:441:57:267:3418:14
7:31
+0:11
30K
18.64 mi13:12:002:21:427:3624:16
7:49
+0:18
20M
20.00 mi13:22:422:32:247:3710:42
7:52
+0:03
21M
21.00 mi13:31:082:40:507:408:26
8:26
+0:34
35K
21.75 mi13:37:012:46:437:405:53
7:52
-0:34
23M
23.00 mi13:47:012:56:437:4110:00
7:59
+0:07
24M
24.00 mi13:54:573:04:397:427:56
7:56
-0:03
40K
24.85 mi14:01:583:11:407:437:01
8:12
+0:16
25.2M
25.20 mi14:04:593:14:417:443:01
8:45
+0:33
Finish
26.22 mi14:12:483:22:307:447:49
7:40
-1:05

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

7:20 /mi

Average Pace

7:44 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:02

91% of race

Time at Steady Pace

15:27

8% of race

Time at Slower Pace

3:01

1% of race

Average Pace: 7:43 /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 mi11:14:2224:047:4524:04
7:45
#11888
10K
6.21 mi11:38:0447:467:4123:42
7:38
#11692
15K
9.32 mi12:01:181:11:007:3723:14
7:29
#11088
20K
12.43 mi12:24:301:34:127:3523:12
7:28
#10525
Half
13.11 mi12:29:301:39:127:345:00
7:20
#10436
25K
15.53 mi12:47:441:57:267:3418:14
7:31
#10140
30K
18.64 mi13:12:002:21:427:3624:16
7:49
#9983
20M
20.00 mi13:22:422:32:247:3710:42
7:52
#9902
21M
21.00 mi13:31:082:40:507:408:26
8:26
#9888
35K
21.75 mi13:37:012:46:437:405:53
7:52
#9923
23M
23.00 mi13:47:012:56:437:4110:00
7:59
#9877
24M
24.00 mi13:54:573:04:397:427:56
7:56
#9882
40K
24.85 mi14:01:583:11:407:437:01
8:12
#9927
25.2M
25.20 mi14:04:593:14:417:443:01
8:45
#9929
Finish
26.22 mi14:12:483:22:307:447:49
7:40
#9886
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi118882802280210014(Top 38%)1849(Top 16%)1849(Top 38%)
10K6.21 mi3.10 mi11692+1962702+1002702+10011589(Top 44%)2644(Top 23%)2644(Top 54%)
15K9.32 mi3.11 mi11088+6042381+3212381+32110014(Top 38%)1849(Top 16%)1849(Top 38%)
20K12.43 mi3.11 mi10525+5632084+2972084+2979071(Top 34%)1523(Top 13%)1523(Top 31%)
Half13.11 mi0.68 mi10436+892045+392045+398906(Top 33%)1456(Top 13%)1456(Top 30%)
25K15.53 mi2.42 mi10140+2961921+1241921+1248940(Top 34%)1540(Top 13%)1540(Top 32%)
30K18.64 mi3.11 mi9983+1571887+341887+349462(Top 36%)1914(Top 17%)1914(Top 39%)
20M20.00 mi1.36 mi9902+811875+121875+129416(Top 35%)1984(Top 17%)1984(Top 41%)
21M21.00 mi1.00 mi9888+141896-211896-2110084(Top 38%)2417(Top 21%)2417(Top 49%)
35K21.75 mi0.75 mi9923-351926-301926-3011142(Top 42%)2929(Top 26%)2929(Top 60%)
23M23.00 mi1.25 mi9877+461938-121938-129668(Top 36%)2332(Top 20%)2332(Top 48%)
24M24.00 mi1.00 mi9882-51977-391977-3910791(Top 41%)2970(Top 26%)2970(Top 61%)
40K24.85 mi0.85 mi9927-452029-522029-5211413(Top 43%)3361(Top 29%)3361(Top 69%)
25.2M25.20 mi0.35 mi9929-22046-172046-1711037(Top 41%)3195(Top 28%)3195(Top 65%)
Finish26.22 mi1.02 mi9886+432043+32043+39802(Top 37%)2607(Top 23%)2607(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10014

Females

1849

F18-39

1849

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

11589

Females

2644

F18-39

2644

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10014

Females

1849

F18-39

1849

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9071

Females

1523

F18-39

1523

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8906

Females

1456

F18-39

1456

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

8940

Females

1540

F18-39

1540

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

9462

Females

1914

F18-39

1914

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

9416

Females

1984

F18-39

1984

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10084

Females

2417

F18-39

2417

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11142

Females

2929

F18-39

2929

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9668

Females

2332

F18-39

2332

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10791

Females

2970

F18-39

2970

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11413

Females

3361

F18-39

3361

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11037

Females

3195

F18-39

3195

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

9802

Females

2607

F18-39

2607

Passing Analysis

Category:
Athletes Passed
2852*
Passed By
848
Net Change
+2002
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11888
5K → 10K404208+196#11888#11692
10K → 15K62723+604#11692#11088
15K → 20K57613+563#11088#10525
20K → Half945+89#10525#10436
Half → 25K31519+296#10436#10140
25K → 30K243*86+157#10140#9983
30K → 20M12544+81#9983#9902
20M → 21M9378+14#9902#9888
21M → 35K2762-35#9888#9923
35K → 23M9650+46#9923#9877
23M → 24M7175-5#9877#9882
24M → 40K5398-45#9882#9927
40K → 25.2M3133-2#9927#9929
25.2M → Finish97*54+43#9929#9886
TOTALS2852*848+2002

* 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