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BOSTON MARATHON 2023

Alexandra Cifelli

Bib: 14341•F

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0:00
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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

Start
0:00:00
Race begins
5K· 3.11 mi
26:02
Rank: #16750
Start → 5K
26:02 | 8:23/mi
10K· 6.21 mi
52:56
Rank: #18026 (-1276)
5K → 10K
26:54 | 8:39/mi
15K· 9.32 mi
1:20:14
Rank: #18528 (-502)
10K → 15K
27:18 | 8:47/mi
20K· 12.43 mi
1:48:29
Rank: #18956 (-428)
15K → 20K
28:15 | 9:06/mi
Half· 13.11 mi
1:54:32
Rank: #19013 (-57)
20K → Half
6:03 | 8:52/mi
25K· 15.53 mi
2:17:23
Rank: #19328 (-315)
Half → 25K
22:51 | 9:25/mi
30K· 18.64 mi
2:48:26
Rank: #19761 (-433)
25K → 30K
31:03 | 10:00/mi
20M
3:01:49
Rank: #19773 (-12)
30K → 20M
13:23 | 9:51/mi
21M
3:12:05
Rank: #19701 (+72)
20M → 21M
10:16 | 10:16/mi
35K· 21.75 mi
3:19:46
Rank: #19832 (-131)
21M → 35K
7:41 | 10:16/mi
23M
3:32:22
Rank: #19872 (-40)
35K → 23M
12:36 | 10:04/mi
24M
3:42:21
Rank: #19926 (-54)
23M → 24M
9:59 | 9:59/mi
40K· 24.85 mi
3:50:55
Rank: #19944 (-18)
24M → 40K
8:34 | 10:01/mi
25.2M
3:54:47
Rank: #19969 (-25)
40K → 25.2M
3:52 | 11:13/mi
Finish· 26.22 mi
4:05:23
Rank: #20074 (-105)
25.2M → Finish
10:36 | 10:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:32
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:10:51
Pace9:59 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1226:028:2326:02
8:23
-
10K
6.21 mi11:22:0652:568:3126:54
8:39
+0:16
15K
9.32 mi11:49:241:20:148:3627:18
8:47
+0:08
20K
12.43 mi12:17:391:48:298:4428:15
9:06
+0:19
Half
13.11 mi12:23:421:54:328:446:03
8:52
-0:14
25K
15.53 mi12:46:332:17:238:5122:51
9:25
+0:33
30K
18.64 mi13:17:362:48:269:0231:03
10:00
+0:35
20M
20.00 mi13:30:593:01:499:0513:23
9:51
-0:09
21M
21.00 mi13:41:153:12:059:0910:16
10:16
+0:25
35K
21.75 mi13:48:563:19:469:117:41
10:16
0:00
23M
23.00 mi14:01:323:32:229:1412:36
10:04
-0:12
24M
24.00 mi14:11:313:42:219:169:59
9:59
-0:05
40K
24.85 mi14:20:053:50:559:178:34
10:01
+0:02
25.2M
25.20 mi14:23:573:54:479:193:52
11:13
+1:12
Finish
26.22 mi14:34:334:05:239:2210:36
10:24
-0:49

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

8:23 /mi

Average Pace

9:22 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:23

56% of race

Time at Steady Pace

1:33:32

38% of race

Time at Slower Pace

14:28

6% of race

Average Pace: 9:22 /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 mi10:55:1226:028:2326:02
8:23
#16750
10K
6.21 mi11:22:0652:568:3126:54
8:39
#18026
15K
9.32 mi11:49:241:20:148:3627:18
8:47
#18528
20K
12.43 mi12:17:391:48:298:4428:15
9:06
#18956
Half
13.11 mi12:23:421:54:328:446:03
8:52
#19013
25K
15.53 mi12:46:332:17:238:5122:51
9:25
#19328
30K
18.64 mi13:17:362:48:269:0231:03
10:00
#19761
20M
20.00 mi13:30:593:01:499:0513:23
9:51
#19773
21M
21.00 mi13:41:153:12:059:0910:16
10:16
#19701
35K
21.75 mi13:48:563:19:469:117:41
10:16
#19832
23M
23.00 mi14:01:323:32:229:1412:36
10:04
#19872
24M
24.00 mi14:11:313:42:219:169:59
9:59
#19926
40K
24.85 mi14:20:053:50:559:178:34
10:01
#19944
25.2M
25.20 mi14:23:573:54:479:193:52
11:13
#19969
Finish
26.22 mi14:34:334:05:239:2210:36
10:24
#20074
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi167505765576519459(Top 73%)7370(Top 65%)7370(Top 151%)
10K6.21 mi3.10 mi18026-12766552-7876552-78719193(Top 72%)7198(Top 63%)7198(Top 147%)
15K9.32 mi3.11 mi18528-5026834-2826834-28219459(Top 73%)7370(Top 65%)7370(Top 151%)
20K12.43 mi3.11 mi18956-4287096-2627096-26220118(Top 76%)7738(Top 68%)7738(Top 158%)
Half13.11 mi0.68 mi19013-577131-357131-3519886(Top 75%)7611(Top 67%)7611(Top 156%)
25K15.53 mi2.42 mi19328-3157322-1917322-19120589(Top 77%)8039(Top 70%)8039(Top 165%)
30K18.64 mi3.11 mi19761-4337592-2707592-27021019(Top 79%)8355(Top 73%)8355(Top 171%)
20M20.00 mi1.36 mi19773-127608-167608-1620019(Top 75%)7865(Top 69%)7865(Top 161%)
21M21.00 mi1.00 mi19701+727568+407568+4018956(Top 71%)7320(Top 64%)7320(Top 150%)
35K21.75 mi0.75 mi19832-1317655-877655-8721909(Top 82%)9007(Top 79%)9007(Top 184%)
23M23.00 mi1.25 mi19872-407692-377692-3720178(Top 76%)8062(Top 71%)8062(Top 165%)
24M24.00 mi1.00 mi19926-547730-387730-3820756(Top 78%)8410(Top 74%)8410(Top 172%)
40K24.85 mi0.85 mi19944-187749-197749-1920030(Top 75%)8072(Top 71%)8072(Top 165%)
25.2M25.20 mi0.35 mi19969-257772-237772-2320959(Top 79%)8565(Top 75%)8565(Top 175%)
Finish26.22 mi1.02 mi20074-1057842-707842-7022809(Top 86%)9552(Top 84%)9552(Top 196%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

19459

Females

7370

F18-39

7370

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19193

Females

7198

F18-39

7198

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

19459

Females

7370

F18-39

7370

15K→20K

9.3 - 12.4 mi

Top 76%
×5stories
+106ft-86ft

Overall

20118

Females

7738

F18-39

7738

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

19886

Females

7611

F18-39

7611

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

20589

Females

8039

F18-39

8039

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21019

Females

8355

F18-39

8355

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

20019

Females

7865

F18-39

7865

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

18956

Females

7320

F18-39

7320

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21909

Females

9007

F18-39

9007

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

20178

Females

8062

F18-39

8062

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

20756

Females

8410

F18-39

8410

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

20030

Females

8072

F18-39

8072

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

20959

Females

8565

F18-39

8565

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

22809

Females

9552

F18-39

9552

Passing Analysis

Category:
Athletes Passed
670
Passed By
3994
Net Change
-3324
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16750
5K → 10K471323-1276#16750#18026
10K → 15K56558-502#18026#18528
15K → 20K55483-428#18528#18956
20K → Half1168-57#18956#19013
Half → 25K57372-315#19013#19328
25K → 30K67500-433#19328#19761
30K → 20M8092-12#19761#19773
20M → 21M11442+72#19773#19701
21M → 35K18149-131#19701#19832
35K → 23M60100-40#19832#19872
23M → 24M3589-54#19872#19926
24M → 40K4159-18#19926#19944
40K → 25.2M1641-25#19944#19969
25.2M → Finish13118-105#19969#20074
TOTALS6703994-3324
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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