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BOSTON MARATHON 2023

Chelsea Dana

Bib: 3562•F

MT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 15%
Gender (Female)
#0 / 11423
Top 2%
Masters (Masters Women)
#0 / 6539
Top 0.6%
Division (F40-44)
#0 / 1878
Top 2%
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
6:59/mi
21:43
↑ 97↓ 3451.5%
10K· 6.21 mi
6:48/mi
42:50
↑ 79↓ 1380.4%
15K· 9.32 mi
6:48/mi
1:03:58
↑ 67↓ 78
20K· 12.43 mi
6:54/mi
1:25:24
↑ 106↓ 860.1%
Half· 13.11 mi
6:50/mi
1:30:04
↑ 19↓ 370.5%
25K· 15.53 mi
6:50/mi
1:46:39
↑ 66↓ 880.2%
30K· 18.64 mi
7:01/mi
2:08:26
↑ 181↓ 1480.2%
20M
6:54/mi
2:17:48
↑ 64↓ 500.2%
21M
7:13/mi
2:25:01
↑ 106↓ 241.6%
35K· 21.75 mi
6:37/mi
2:29:58
↑ 17↓ 861.7%
23M
6:35/mi
2:38:12
↑ 23↓ 630.6%
24M
6:20/mi
2:44:32
↓ 821.3%
40K· 24.85 mi
6:31/mi
2:50:06
↓ 200.3%
25.2M
7:12/mi
2:52:35
↑ 13↓ 160.2%
Finish· 26.22 mi
6:34/mi
2:59:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:30:04
Pace6:52 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:13
Pace6:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2021:436:5921:43
6:59
-
10K
6.21 mi10:44:2742:506:5421:07
6:48
-0:11
15K
9.32 mi11:05:351:03:586:5221:08
6:48
0:00
20K
12.43 mi11:27:011:25:246:5221:26
6:54
+0:06
Half
13.11 mi11:31:411:30:046:524:40
6:50
-0:04
25K
15.53 mi11:48:161:46:396:5216:35
6:50
0:00
30K
18.64 mi12:10:032:08:266:5321:47
7:01
+0:11
20M
20.00 mi12:19:252:17:486:539:22
6:54
-0:07
21M
21.00 mi12:26:382:25:016:547:13
7:13
+0:19
35K
21.75 mi12:31:352:29:586:544:57
6:37
-0:36
23M
23.00 mi12:39:492:38:126:538:14
6:35
-0:02
24M
24.00 mi12:46:092:44:326:516:20
6:20
-0:15
40K
24.85 mi12:51:432:50:066:515:34
6:31
+0:11
25.2M
25.20 mi12:54:122:52:356:512:29
7:12
+0:41
Finish
26.22 mi13:00:542:59:176:516:42
6:34
-0:38

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

6:20 /mi

Average Pace

6:51 /mi

Slowest Pace

7:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:05

70% of race

Time at Steady Pace

53:12

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:23:2021:436:5921:43
6:59
#6204
10K
6.21 mi10:44:2742:506:5421:07
6:48
#5771
15K
9.32 mi11:05:351:03:586:5221:08
6:48
#5578
20K
12.43 mi11:27:011:25:246:5221:26
6:54
#5502
Half
13.11 mi11:31:411:30:046:524:40
6:50
#5518
25K
15.53 mi11:48:161:46:396:5216:35
6:50
#5334
30K
18.64 mi12:10:032:08:266:5321:47
7:01
#5080
20M
20.00 mi12:19:252:17:486:539:22
6:54
#4913
21M
21.00 mi12:26:382:25:016:547:13
7:13
#4773
35K
21.75 mi12:31:352:29:586:544:57
6:37
#4690
23M
23.00 mi12:39:492:38:126:538:14
6:35
#4438
24M
24.00 mi12:46:092:44:326:516:20
6:20
#4244
40K
24.85 mi12:51:432:50:066:515:34
6:31
#4062
25.2M
25.20 mi12:54:122:52:356:512:29
7:12
#4022
Finish
26.22 mi13:00:542:59:176:516:42
6:34
#3955
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi62045355355173(Top 19%)382(Top 3%)382(Top 20%)
10K6.21 mi3.10 mi5771+433464+71464+715290(Top 20%)394(Top 3%)394(Top 21%)
15K9.32 mi3.11 mi5578+193433+31433+315173(Top 19%)382(Top 3%)382(Top 20%)
20K12.43 mi3.11 mi5502+76421+12421+125355(Top 20%)405(Top 4%)405(Top 22%)
Half13.11 mi0.68 mi5518-16420+1420+15660(Top 21%)435(Top 4%)435(Top 23%)
25K15.53 mi2.42 mi5334+184394+26394+264514(Top 17%)307(Top 3%)307(Top 16%)
30K18.64 mi3.11 mi5080+254366+28366+284433(Top 17%)316(Top 3%)316(Top 17%)
20M20.00 mi1.36 mi4913+167348+18348+183406(Top 13%)221(Top 2%)221(Top 12%)
21M21.00 mi1.00 mi4773+140331+17331+173239(Top 12%)215(Top 2%)215(Top 11%)
35K21.75 mi0.75 mi4690+83320+11320+113158(Top 12%)205(Top 2%)205(Top 11%)
23M23.00 mi1.25 mi4438+252292+28292+281714(Top 6%)89(Top 0.8%)89(Top 5%)
24M24.00 mi1.00 mi4244+194268+24268+241473(Top 6%)80(Top 0.7%)80(Top 4%)
40K24.85 mi0.85 mi4062+182258+10258+101609(Top 6%)95(Top 0.8%)95(Top 5%)
25.2M25.20 mi0.35 mi4022+40255+3255+32606(Top 10%)198(Top 2%)198(Top 11%)
Finish26.22 mi1.02 mi3955+67252+3252+32885(Top 11%)266(Top 2%)266(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

5173

Females

382

F40-44

382

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5290

Females

394

F40-44

394

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

5173

Females

382

F40-44

382

15K→20K

9.3 - 12.4 mi

Top 20%
×5story building
+106ft-86ft

Overall

5355

Females

405

F40-44

405

20K→Half

12.4 - 13.1 mi

Top 21%
×2story building
+19ft-37ft

Overall

5660

Females

435

F40-44

435

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4514

Females

307

F40-44

307

25K→30K

15.5 - 18.6 mi

Top 17%
×9story building
+181ft-148ft

Overall

4433

Females

316

F40-44

316

30K→20M

18.6 - 20.0 mi

Top 13%
×5story building
+64ft-50ft

Overall

3406

Females

221

F40-44

221

20M→21M

20.0 - 21.0 mi

Top 12%
×8story building
+106ft-24ft

Overall

3239

Females

215

F40-44

215

21M→35K

21.0 - 21.8 mi

Top 12%
×7story building
+17ft-86ft

Overall

3158

Females

205

F40-44

205

35K→23M

21.8 - 23.0 mi

Top 6%
×5story building
+23ft-63ft

Overall

1714

Females

89

F40-44

89

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1473

Females

80

F40-44

80

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1609

Females

95

F40-44

95

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2606

Females

198

F40-44

198

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2story building
+22ft-21ft

Overall

2885

Females

266

F40-44

266

Passing Analysis

Category:
Athletes Passed
2520
Passed By
271
Net Change
+2249
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6204
5K → 10K47845+433#6204#5771
10K → 15K23643+193#5771#5578
15K → 20K13458+76#5578#5502
20K → Half1329-16#5502#5518
Half → 25K19511+184#5518#5334
25K → 30K28531+254#5334#5080
30K → 20M17710+167#5080#4913
20M → 21M1499+140#4913#4773
21M → 35K885+83#4773#4690
35K → 23M2553+252#4690#4438
23M → 24M1940+194#4438#4244
24M → 40K1820+182#4244#4062
40K → 25.2M499+40#4062#4022
25.2M → Finish8518+67#4022#3955
TOTALS2520271+2249
📊

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