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BOSTON MARATHON 2024

Marcy Ambler

MO

Bib: 21683 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 47%
Masters (Masters Women)
#0 / 6263
Top 37%
Division (F50-54)
#0 / 1187
Top 31%
Race Day Weather
55°/45°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:21/mi
25:57
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:33/mi
52:31
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:45/mi
1:19:43
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:51/mi
1:47:14
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:17/mi
1:52:53
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:43/mi
2:14:02
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:58/mi
2:41:52
↑ 181↓ 1480.2%
138 ft elev
20M
8:56/mi
2:54:00
↑ 64↓ 500.2%
148 ft elev
21M
10:23/mi
3:04:23
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:28/mi
3:10:43
↑ 17↓ 861.7%
156 ft elev
23M
9:58/mi
3:23:12
↑ 23↓ 630.6%
116 ft elev
24M
8:39/mi
3:31:51
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:19/mi
3:39:49
↓ 200.3%
20 ft elev
25.2M
10:15/mi
3:43:21
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:18/mi
3:51:48
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:52:538:37 /mi⚡ faster
2nd Half
1:58:559:04 /mi+5.3%
Positive split — 5.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
25:578:213.11 mi25:57
8:21
-
10K
52:318:273.10 mi26:34
8:33
+0:12
15K
1:19:438:333.11 mi27:12
8:45
+0:12
20K
1:47:148:383.11 mi27:31
8:51
+0:06
Half(13.11 mi)
1:52:538:370.68 mi5:39
8:17
-0:34
25K
2:14:028:382.42 mi21:09
8:43
+0:26
30K
2:41:528:413.11 mi27:50
8:58
+0:15
20M
2:54:008:421.36 mi12:08
8:56
-0:02
21M
3:04:238:471.00 mi10:23
10:23
+1:27
35K
3:10:438:460.75 mi6:20
8:28
-1:55
23M
3:23:128:501.25 mi12:29
9:58
+1:30
24M
3:31:518:501.00 mi8:39
8:39
-1:19
40K
3:39:498:510.85 mi7:58
9:19
+0:40
25.2M
3:43:218:520.35 mi3:32
10:15
+0:56
Finish(26.22 mi)
3:51:488:511.02 mi8:27
8:18
-1:57
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:17 /mi

Average Pace

8:51 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

40:03

17% of race

Time at Steady Pace

2:37:23

68% of race

Time at Slower Pace

34:22

15% of race

Average Pace: 8:50 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi16960613661361775665736573
10K3.10 mi17230-2706285-1496285-1491757864766476
15K3.11 mi17425-1956388-1036388-1031775665736573
20K3.11 mi17136+2896248+1406248+1401668559955995
Half(13.11 mi)0.68 mi16987+1496168+806168+801453647814781
25K2.42 mi16445+5425866+3025866+3021419547124712
30K3.11 mi15798+6475553+3135553+3131304643064306
20M1.36 mi15492+3065415+1385415+1381177439023902
21M1.00 mi15425+675416-15416-11445555385538
35K0.75 mi15243+1825335+815335+811059835583558
23M1.25 mi15289-465413-785413-781537461006100
24M1.00 mi15055+2345319+945319+941033336193619
40K0.85 mi14899+1565273+465273+461236947184718
25.2M0.35 mi14826+735248+255248+251194945804580
Finish(26.22 mi)1.02 mi14626+2005165+835165+831033436743674

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

17756

Females

6573

F50-54

6573

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

17578

Females

6476

F50-54

6476

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

17756

Females

6573

F50-54

6573

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

16685

Females

5995

F50-54

5995

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

14536

Females

4781

F50-54

4781

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

14195

Females

4712

F50-54

4712

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

13046

Females

4306

F50-54

4306

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

11774

Females

3902

F50-54

3902

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

14455

Females

5538

F50-54

5538

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10598

Females

3558

F50-54

3558

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15374

Females

6100

F50-54

6100

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

10333

Females

3619

F50-54

3619

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12369

Females

4718

F50-54

4718

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

11949

Females

4580

F50-54

4580

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

10334

Females

3674

F50-54

3674

Passing Analysis

Category:
Passed
3575
Passed By
1241
Net Change
+2334
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16960
5K → 10K173443-270#16960#17230
10K → 15K179374-195#17230#17425
15K → 20K408119+289#17425#17136
20K → Half1490+149#17136#16987
Half → 25K55210+542#16987#16445
25K → 30K66417+647#16445#15798
30K → 20M31610+306#15798#15492
20M → 21M14376+67#15492#15425
21M → 35K1842+182#15425#15243
35K → 23M105151-46#15243#15289
23M → 24M2395+234#15289#15055
24M → 40K17216+156#15055#14899
40K → 25.2M8310+73#14899#14826
25.2M → Finish2088+200#14826#14626
TOTALS35751241+2334

Passing Charts

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