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BOSTON MARATHON 2023

Madolyn Henderson

Bib: 15231•F

SC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 21%
Division (F18-39)
#0 / 4884
Top 37%
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
7:39/mi
23:45
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
47:28
↑ 79↓ 1380.4%
15K· 9.32 mi
7:37/mi
1:11:09
↑ 67↓ 78
20K· 12.43 mi
7:45/mi
1:35:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:40:22
↑ 19↓ 370.5%
25K· 15.53 mi
7:48/mi
1:59:16
↑ 66↓ 880.2%
30K· 18.64 mi
8:07/mi
2:24:30
↑ 181↓ 1480.2%
20M
8:03/mi
2:35:26
↑ 64↓ 500.2%
21M
8:33/mi
2:43:59
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:49:51
↑ 17↓ 861.7%
23M
7:56/mi
2:59:47
↑ 23↓ 630.6%
24M
7:45/mi
3:07:32
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:14:15
↓ 200.3%
25.2M
8:39/mi
3:17:14
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:24:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:22
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:44:32
Pace7:58 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1923:457:3923:45
7:39
-
10K
6.21 mi11:17:0247:287:3823:43
7:38
-0:01
15K
9.32 mi11:40:431:11:097:3823:41
7:37
-0:01
20K
12.43 mi12:04:471:35:137:4024:04
7:45
+0:08
Half
13.11 mi12:09:561:40:227:395:09
7:33
-0:12
25K
15.53 mi12:28:501:59:167:4118:54
7:48
+0:15
30K
18.64 mi12:54:042:24:307:4525:14
8:07
+0:19
20M
20.00 mi13:05:002:35:267:4610:56
8:03
-0:04
21M
21.00 mi13:13:332:43:597:498:33
8:33
+0:30
35K
21.75 mi13:19:252:49:517:495:52
7:51
-0:42
23M
23.00 mi13:29:212:59:477:499:56
7:56
+0:05
24M
24.00 mi13:37:063:07:327:497:45
7:45
-0:11
40K
24.85 mi13:43:493:14:157:496:43
7:51
+0:06
25.2M
25.20 mi13:46:483:17:147:502:59
8:39
+0:48
Finish
26.22 mi13:54:283:24:547:497:40
7:31
-1:08

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

7:31 /mi

Average Pace

7:49 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:13:22

94% of race

Time at Steady Pace

11:32

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:49 /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 mi10:53:1923:457:3923:45
7:39
#10996
10K
6.21 mi11:17:0247:287:3823:43
7:38
#11262
15K
9.32 mi11:40:431:11:097:3823:41
7:37
#11239
20K
12.43 mi12:04:471:35:137:4024:04
7:45
#11213
Half
13.11 mi12:09:561:40:227:395:09
7:33
#11167
25K
15.53 mi12:28:501:59:167:4118:54
7:48
#11128
30K
18.64 mi12:54:042:24:307:4525:14
8:07
#11183
20M
20.00 mi13:05:002:35:267:4610:56
8:03
#11115
21M
21.00 mi13:13:332:43:597:498:33
8:33
#11077
35K
21.75 mi13:19:252:49:517:495:52
7:51
#11075
23M
23.00 mi13:29:212:59:477:499:56
7:56
#10926
24M
24.00 mi13:37:063:07:327:497:45
7:45
#10850
40K
24.85 mi13:43:493:14:157:496:43
7:51
#10761
25.2M
25.20 mi13:46:483:17:147:502:59
8:39
#10735
Finish
26.22 mi13:54:283:24:547:497:40
7:31
#10621
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi109962330233011223(Top 42%)2477(Top 22%)2477(Top 51%)
10K6.21 mi3.10 mi11262-2662477-1472477-14711660(Top 44%)2684(Top 23%)2684(Top 55%)
15K9.32 mi3.11 mi11239+232459+182459+1811223(Top 42%)2477(Top 22%)2477(Top 51%)
20K12.43 mi3.11 mi11213+262444+152444+1511298(Top 42%)2578(Top 23%)2578(Top 53%)
Half13.11 mi0.68 mi11167+462425+192425+1910720(Top 40%)2257(Top 20%)2257(Top 46%)
25K15.53 mi2.42 mi11128+392425242511082(Top 42%)2529(Top 22%)2529(Top 52%)
30K18.64 mi3.11 mi11183-552522-972522-9711818(Top 44%)3078(Top 27%)3078(Top 63%)
20M20.00 mi1.36 mi11115+682496+262496+2610651(Top 40%)2573(Top 23%)2573(Top 53%)
21M21.00 mi1.00 mi11077+382501-52501-510810(Top 41%)2786(Top 24%)2786(Top 57%)
35K21.75 mi0.75 mi11075+22506-52506-511042(Top 41%)2915(Top 26%)2915(Top 60%)
23M23.00 mi1.25 mi10926+1492465+412465+419346(Top 35%)2205(Top 19%)2205(Top 45%)
24M24.00 mi1.00 mi10850+762453+122453+129481(Top 36%)2341(Top 20%)2341(Top 48%)
40K24.85 mi0.85 mi10761+892429+242429+249111(Top 34%)2241(Top 20%)2241(Top 46%)
25.2M25.20 mi0.35 mi10735+262433-42433-410610(Top 40%)3030(Top 27%)3030(Top 62%)
Finish26.22 mi1.02 mi10621+1142399+342399+348782(Top 33%)2161(Top 19%)2161(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11223

Females

2477

F18-39

2477

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

11660

Females

2684

F18-39

2684

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11223

Females

2477

F18-39

2477

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11298

Females

2578

F18-39

2578

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10720

Females

2257

F18-39

2257

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11082

Females

2529

F18-39

2529

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

11818

Females

3078

F18-39

3078

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

10651

Females

2573

F18-39

2573

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10810

Females

2786

F18-39

2786

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

11042

Females

2915

F18-39

2915

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9346

Females

2205

F18-39

2205

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9481

Females

2341

F18-39

2341

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9111

Females

2241

F18-39

2241

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10610

Females

3030

F18-39

3030

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

8782

Females

2161

F18-39

2161

Passing Analysis

Category:
Athletes Passed
1750*
Passed By
1375
Net Change
+375
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10996
5K → 10K187453-266#10996#11262
10K → 15K192169+23#11262#11239
15K → 20K180154+26#11239#11213
20K → Half515+46#11213#11167
Half → 25K145106+39#11167#11128
25K → 30K159214-55#11128#11183
30K → 20M117*49+68#11183#11115
20M → 21M9860+38#11115#11077
21M → 35K4442+2#11077#11075
35K → 23M17627+149#11075#10926
23M → 24M10731+76#10926#10850
24M → 40K11829+89#10850#10761
40K → 25.2M3913+26#10761#10735
25.2M → Finish13723+114#10735#10621
TOTALS1750*1375+375

* 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