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BOSTON MARATHON 2024

Izumi Smith

CA

Bib: 21342 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Top 43%
Division (F55-59)
#0 / 876
Top 23%
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
8:02/mi
24:58
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:15/mi
50:36
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:18/mi
1:16:24
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:32/mi
1:42:54
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:23/mi
1:48:37
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:42/mi
2:09:43
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:20/mi
2:38:43
↑ 181↓ 1480.2%
138 ft elev
20M
9:30/mi
2:51:38
↑ 64↓ 500.2%
148 ft elev
21M
11:41/mi
3:03:19
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:32/mi
3:10:27
↑ 17↓ 861.7%
156 ft elev
23M
10:11/mi
3:23:12
↑ 23↓ 630.6%
116 ft elev
24M
10:35/mi
3:33:47
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:32/mi
3:42:47
↓ 200.3%
20 ft elev
25.2M
11:42/mi
3:46:49
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:06/mi
3:56:05
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:37
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time2:07:28
Pace9:43 /mi
📊Positive Split: 17.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3024:588:0224:58
8:02
-
10K
6.21 mi11:46:0850:368:0925:38
8:15
+0:13
15K
9.32 mi12:11:561:16:248:1225:48
8:18
+0:03
20K
12.43 mi12:38:261:42:548:1726:30
8:32
+0:14
Half
13.11 mi12:44:091:48:378:175:43
8:23
-0:09
25K
15.53 mi13:05:152:09:438:2121:06
8:42
+0:19
30K
18.64 mi13:34:152:38:438:3129:00
9:20
+0:38
20M
20.00 mi13:47:102:51:388:3512:55
9:30
+0:10
21M
21.00 mi13:58:513:03:198:4411:41
11:41
+2:11
35K
21.75 mi14:05:593:10:278:457:08
9:32
-2:09
23M
23.00 mi14:18:443:23:128:5012:45
10:11
+0:39
24M
24.00 mi14:29:193:33:478:5410:35
10:35
+0:24
40K
24.85 mi14:38:193:42:478:589:00
10:32
-0:03
25.2M
25.20 mi14:42:213:46:499:004:02
11:42
+1:10
Finish
26.22 mi14:51:373:56:059:019:16
9:06
-2:36

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

8:02 /mi

Average Pace

9:01 /mi

Slowest Pace

11:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:43

55% of race

Time at Steady Pace

58:19

25% of race

Time at Slower Pace

48:03

20% of race

Average Pace: 9:00 /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 mi11:20:3024:588:0224:58
8:02
#14941
10K
6.21 mi11:46:0850:368:0925:38
8:15
#15418
15K
9.32 mi12:11:561:16:248:1225:48
8:18
#15336
20K
12.43 mi12:38:261:42:548:1726:30
8:32
#15191
Half
13.11 mi12:44:091:48:378:175:43
8:23
#15173
25K
15.53 mi13:05:152:09:438:2121:06
8:42
#14934
30K
18.64 mi13:34:152:38:438:3129:00
9:20
#14889
20M
20.00 mi13:47:102:51:388:3512:55
9:30
#14875
21M
21.00 mi13:58:513:03:198:4411:41
11:41
#15162
35K
21.75 mi14:05:593:10:278:457:08
9:32
#15192
23M
23.00 mi14:18:443:23:128:5012:45
10:11
#15291
24M
24.00 mi14:29:193:33:478:5410:35
10:35
#15493
40K
24.85 mi14:38:193:42:478:589:00
10:32
#15547
25.2M
25.20 mi14:42:213:46:499:004:02
11:42
#15564
Finish
26.22 mi14:51:373:56:059:019:16
9:06
#15515
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi149414909490915300(Top 60%)5150(Top 47%)5150(Top 588%)
10K6.21 mi3.10 mi15418-4775196-2875196-28715834(Top 62%)5432(Top 50%)5432(Top 620%)
15K9.32 mi3.11 mi15336+825152+445152+4415300(Top 60%)5150(Top 47%)5150(Top 588%)
20K12.43 mi3.11 mi15191+1455072+805072+8014969(Top 59%)4993(Top 46%)4993(Top 570%)
Half13.11 mi0.68 mi15173+185062+105062+1015096(Top 59%)5110(Top 47%)5110(Top 583%)
25K15.53 mi2.42 mi14934+2394959+1034959+10314094(Top 55%)4662(Top 43%)4662(Top 532%)
30K18.64 mi3.11 mi14889+455013-545013-5414766(Top 58%)5292(Top 48%)5292(Top 604%)
20M20.00 mi1.36 mi14875+145045-325045-3214571(Top 57%)5438(Top 50%)5438(Top 621%)
21M21.00 mi1.00 mi15162-2875268-2235268-22318084(Top 71%)7363(Top 67%)7363(Top 841%)
35K21.75 mi0.75 mi15192-305314-465314-4615623(Top 61%)6152(Top 56%)6152(Top 702%)
23M23.00 mi1.25 mi15291-995415-1015415-10116065(Top 63%)6431(Top 59%)6431(Top 734%)
24M24.00 mi1.00 mi15493-2025569-1545569-15418097(Top 71%)7507(Top 69%)7507(Top 857%)
40K24.85 mi0.85 mi15547-545629-605629-6016772(Top 66%)6902(Top 63%)6902(Top 788%)
25.2M25.20 mi0.35 mi15564-175652-235652-2316590(Top 65%)6825(Top 62%)6825(Top 779%)
Finish26.22 mi1.02 mi15515+495657-55657-514692(Top 58%)5817(Top 53%)5817(Top 664%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

15300

Females

5150

F55-59

5150

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

15834

Females

5432

F55-59

5432

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

15300

Females

5150

F55-59

5150

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

14969

Females

4993

F55-59

4993

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

15096

Females

5110

F55-59

5110

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

14094

Females

4662

F55-59

4662

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

14766

Females

5292

F55-59

5292

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

14571

Females

5438

F55-59

5438

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18084

Females

7363

F55-59

7363

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

15623

Females

6152

F55-59

6152

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16065

Females

6431

F55-59

6431

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18097

Females

7507

F55-59

7507

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

16772

Females

6902

F55-59

6902

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

16590

Females

6825

F55-59

6825

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

14692

Females

5817

F55-59

5817

Passing Analysis

Category:
Athletes Passed
1920
Passed By
2494
Net Change
-574
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14941
5K → 10K123600-477#14941#15418
10K → 15K266184+82#15418#15336
15K → 20K294149+145#15336#15191
20K → Half4527+18#15191#15173
Half → 25K33697+239#15173#14934
25K → 30K286241+45#14934#14889
30K → 20M136122+14#14889#14875
20M → 21M57344-287#14875#15162
21M → 35K5989-30#15162#15192
35K → 23M92191-99#15192#15291
23M → 24M43245-202#15291#15493
24M → 40K58112-54#15493#15547
40K → 25.2M3552-17#15547#15564
25.2M → Finish9041+49#15564#15515
TOTALS19202494-574
📊

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