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BOSTON MARATHON 2023

Alene Caldwell

MA

Bib: 29321 F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
10:51/mi
33:44
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
10:01/mi
1:04:51
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:52/mi
1:35:29
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:36/mi
2:05:19
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:27/mi
2:11:46
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:43/mi
2:35:19
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:49/mi
3:05:48
↑ 181↓ 1480.2%
138 ft elev
20M
9:22/mi
3:18:32
↑ 64↓ 500.2%
148 ft elev
21M
9:32/mi
3:28:04
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:16/mi
3:34:15
↑ 17↓ 861.7%
156 ft elev
23M
8:35/mi
3:45:00
↑ 23↓ 630.6%
116 ft elev
24M
8:40/mi
3:53:40
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:59/mi
4:01:21
↓ 200.3%
20 ft elev
25.2M
9:25/mi
4:04:36
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:50/mi
4:13:36
↑ 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 Half
Distance13.11 mi
Time2:11:46
Pace10:03 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:01:50
Pace9:18 /mi
📊Negative Split: 7.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:4033:4410:5133:44
10:51
-
10K
6.21 mi12:26:471:04:5110:2631:07
10:01
-0:50
15K
9.32 mi12:57:251:35:2910:1530:38
9:52
-0:09
20K
12.43 mi13:27:152:05:1910:0529:50
9:36
-0:16
Half
13.11 mi13:33:422:11:4610:036:27
9:27
-0:09
25K
15.53 mi13:57:152:35:1910:0023:33
9:43
+0:16
30K
18.64 mi14:27:443:05:489:5830:29
9:49
+0:06
20M
20.00 mi14:40:283:18:329:5612:44
9:22
-0:27
21M
21.00 mi14:50:003:28:049:549:32
9:32
+0:10
35K
21.75 mi14:56:113:34:159:516:11
8:16
-1:16
23M
23.00 mi15:06:563:45:009:4710:45
8:35
+0:19
24M
24.00 mi15:15:363:53:409:448:40
8:40
+0:05
40K
24.85 mi15:23:174:01:219:437:41
8:59
+0:19
25.2M
25.20 mi15:26:324:04:369:423:15
9:25
+0:26
Finish
26.22 mi15:35:324:13:369:419:00
8:50
-0:35

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

8:16 /mi

Average Pace

9:41 /mi

Slowest Pace

10:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

42:17

17% of race

Time at Steady Pace

1:25:21

34% of race

Time at Slower Pace

2:05:58

50% of race

Average Pace: 9:40 /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 mi11:55:4033:4410:5133:44
10:51
#25464
10K
6.21 mi12:26:471:04:5110:2631:07
10:01
#24573
15K
9.32 mi12:57:251:35:2910:1530:38
9:52
#24107
20K
12.43 mi13:27:152:05:1910:0529:50
9:36
#23607
Half
13.11 mi13:33:422:11:4610:036:27
9:27
#23519
25K
15.53 mi13:57:152:35:1910:0023:33
9:43
#23202
30K
18.64 mi14:27:443:05:489:5830:29
9:49
#22733
20M
20.00 mi14:40:283:18:329:5612:44
9:22
#22464
21M
21.00 mi14:50:003:28:049:549:32
9:32
#22189
35K
21.75 mi14:56:113:34:159:516:11
8:16
#22030
23M
23.00 mi15:06:563:45:009:4710:45
8:35
#21693
24M
24.00 mi15:15:363:53:409:448:40
8:40
#21494
40K
24.85 mi15:23:174:01:219:437:41
8:59
#21312
25.2M
25.20 mi15:26:324:04:369:423:15
9:25
#21227
Finish
26.22 mi15:35:324:13:369:419:00
8:50
#21105
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25464107021070223207(Top 87%)9451(Top 83%)9451(Top 194%)
10K6.21 mi3.10 mi24573+89110200+50210200+50223716(Top 89%)9737(Top 85%)9737(Top 199%)
15K9.32 mi3.11 mi24107+4669949+2519949+25123207(Top 87%)9451(Top 83%)9451(Top 194%)
20K12.43 mi3.11 mi23607+5009669+2809669+28021869(Top 82%)8722(Top 76%)8722(Top 179%)
Half13.11 mi0.68 mi23519+889615+549615+5421989(Top 83%)8775(Top 77%)8775(Top 180%)
25K15.53 mi2.42 mi23202+3179459+1569459+15621510(Top 81%)8562(Top 75%)8562(Top 175%)
30K18.64 mi3.11 mi22733+4699248+2119248+21120489(Top 77%)8051(Top 70%)8051(Top 165%)
20M20.00 mi1.36 mi22464+2699114+1349114+13418361(Top 69%)6951(Top 61%)6951(Top 142%)
21M21.00 mi1.00 mi22189+2758958+1568958+15616161(Top 61%)5728(Top 50%)5728(Top 117%)
35K21.75 mi0.75 mi22030+1598879+798879+7913971(Top 52%)4562(Top 40%)4562(Top 93%)
23M23.00 mi1.25 mi21693+3378710+1698710+16913760(Top 52%)4488(Top 39%)4488(Top 92%)
24M24.00 mi1.00 mi21494+1998610+1008610+10015512(Top 58%)5552(Top 49%)5552(Top 114%)
40K24.85 mi0.85 mi21312+1828521+898521+8916115(Top 61%)5935(Top 52%)5935(Top 122%)
25.2M25.20 mi0.35 mi21227+858478+438478+4314942(Top 56%)5300(Top 46%)5300(Top 109%)
Finish26.22 mi1.02 mi21105+1228429+498429+4917227(Top 65%)6504(Top 57%)6504(Top 133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

23207

Females

9451

F18-39

9451

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23716

Females

9737

F18-39

9737

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

23207

Females

9451

F18-39

9451

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

21869

Females

8722

F18-39

8722

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

21989

Females

8775

F18-39

8775

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

21510

Females

8562

F18-39

8562

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

20489

Females

8051

F18-39

8051

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18361

Females

6951

F18-39

6951

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

16161

Females

5728

F18-39

5728

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13971

Females

4562

F18-39

4562

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

13760

Females

4488

F18-39

4488

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

15512

Females

5552

F18-39

5552

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16115

Females

5935

F18-39

5935

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

14942

Females

5300

F18-39

5300

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17227

Females

6504

F18-39

6504

Passing Analysis

Category:
Athletes Passed
4402
Passed By
43
Net Change
+4359
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25464
5K → 10K8998+891#25464#24573
10K → 15K48115+466#24573#24107
15K → 20K5033+500#24107#23607
20K → Half913+88#23607#23519
Half → 25K3236+317#23519#23202
25K → 30K4701+469#23202#22733
30K → 20M2690+269#22733#22464
20M → 21M2761+275#22464#22189
21M → 35K1590+159#22189#22030
35K → 23M3370+337#22030#21693
23M → 24M2001+199#21693#21494
24M → 40K1831+182#21494#21312
40K → 25.2M872+85#21312#21227
25.2M → Finish1242+122#21227#21105
TOTALS440243+4359
📊

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