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BOSTON MARATHON 2023

Olivia Critchlow

Bib: 19412•F

IN

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

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
8:55/mi
27:43
↑ 97↓ 3451.5%
10K· 6.21 mi
9:40/mi
57:44
↑ 79↓ 1380.4%
15K· 9.32 mi
9:06/mi
1:26:00
↑ 67↓ 78
20K· 12.43 mi
9:17/mi
1:54:49
↑ 106↓ 860.1%
Half· 13.11 mi
9:36/mi
2:01:22
↑ 19↓ 370.5%
25K· 15.53 mi
9:24/mi
2:24:09
↑ 66↓ 880.2%
30K· 18.64 mi
9:29/mi
2:53:37
↑ 181↓ 1480.2%
20M
9:41/mi
3:06:46
↑ 64↓ 500.2%
21M
10:19/mi
3:17:05
↑ 106↓ 241.6%
35K· 21.75 mi
9:20/mi
3:24:04
↑ 17↓ 861.7%
23M
9:39/mi
3:36:09
↑ 23↓ 630.6%
24M
9:46/mi
3:45:55
↓ 821.3%
40K· 24.85 mi
9:14/mi
3:53:49
↓ 200.3%
25.2M
9:37/mi
3:57:08
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
4:05:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:22
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:04:30
Pace9:30 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1627:438:5527:43
8:55
-
10K
6.21 mi11:50:1757:449:1730:01
9:40
+0:45
15K
9.32 mi12:18:331:26:009:1428:16
9:06
-0:34
20K
12.43 mi12:47:221:54:499:1428:49
9:17
+0:11
Half
13.11 mi12:53:552:01:229:156:33
9:36
+0:19
25K
15.53 mi13:16:422:24:099:1722:47
9:24
-0:12
30K
18.64 mi13:46:102:53:379:1929:28
9:29
+0:05
20M
20.00 mi13:59:193:06:469:2013:09
9:41
+0:12
21M
21.00 mi14:09:383:17:059:2310:19
10:19
+0:38
35K
21.75 mi14:16:373:24:049:236:59
9:20
-0:59
23M
23.00 mi14:28:423:36:099:2412:05
9:39
+0:19
24M
24.00 mi14:38:283:45:559:259:46
9:46
+0:07
40K
24.85 mi14:46:223:53:499:247:54
9:14
-0:32
25.2M
25.20 mi14:49:413:57:089:253:19
9:37
+0:23
Finish
26.22 mi14:58:254:05:529:238:44
8:34
-1:03

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

8:34 /mi

Average Pace

9:23 /mi

Slowest Pace

10:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:26

41% of race

Time at Steady Pace

1:51:12

45% of race

Time at Slower Pace

33:14

14% of race

Average Pace: 9:23 /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 mi11:20:1627:438:5527:43
8:55
#20088
10K
6.21 mi11:50:1757:449:1730:01
9:40
#21700
15K
9.32 mi12:18:331:26:009:1428:16
9:06
#21457
20K
12.43 mi12:47:221:54:499:1428:49
9:17
#21310
Half
13.11 mi12:53:552:01:229:156:33
9:36
#21374
25K
15.53 mi13:16:422:24:099:1722:47
9:24
#21221
30K
18.64 mi13:46:102:53:379:1929:28
9:29
#20881
20M
20.00 mi13:59:193:06:469:2013:09
9:41
#20736
21M
21.00 mi14:09:383:17:059:2310:19
10:19
#20632
35K
21.75 mi14:16:373:24:049:236:59
9:20
#20575
23M
23.00 mi14:28:423:36:099:2412:05
9:39
#20458
24M
24.00 mi14:38:283:45:559:259:46
9:46
#20435
40K
24.85 mi14:46:223:53:499:247:54
9:14
#20329
25.2M
25.20 mi14:49:413:57:089:253:19
9:37
#20260
Finish
26.22 mi14:58:254:05:529:238:44
8:34
#20138
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi200887871787120941(Top 79%)8203(Top 72%)8203(Top 168%)
10K6.21 mi3.10 mi21700-16128688-8178688-81722960(Top 86%)9314(Top 82%)9314(Top 191%)
15K9.32 mi3.11 mi21457+2438531+1578531+15720941(Top 79%)8203(Top 72%)8203(Top 168%)
20K12.43 mi3.11 mi21310+1478437+948437+9420888(Top 78%)8164(Top 71%)8164(Top 167%)
Half13.11 mi0.68 mi21374-648474-378474-3722385(Top 84%)8993(Top 79%)8993(Top 184%)
25K15.53 mi2.42 mi21221+1538392+828392+8220515(Top 77%)7996(Top 70%)7996(Top 164%)
30K18.64 mi3.11 mi20881+3408203+1898203+18919384(Top 73%)7408(Top 65%)7408(Top 152%)
20M20.00 mi1.36 mi20736+1458144+598144+5919510(Top 73%)7578(Top 66%)7578(Top 155%)
21M21.00 mi1.00 mi20632+1048100+448100+4419085(Top 72%)7390(Top 65%)7390(Top 151%)
35K21.75 mi0.75 mi20575+578078+228078+2219316(Top 73%)7557(Top 66%)7557(Top 155%)
23M23.00 mi1.25 mi20458+1178030+488030+4818922(Top 71%)7366(Top 64%)7366(Top 151%)
24M24.00 mi1.00 mi20435+238027+38027+320123(Top 76%)8041(Top 70%)8041(Top 165%)
40K24.85 mi0.85 mi20329+1067975+527975+5217305(Top 65%)6577(Top 58%)6577(Top 135%)
25.2M25.20 mi0.35 mi20260+697942+337942+3315854(Top 60%)5810(Top 51%)5810(Top 119%)
Finish26.22 mi1.02 mi20138+1227886+567886+5615865(Top 60%)5744(Top 50%)5744(Top 118%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

20941

Females

8203

F18-39

8203

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22960

Females

9314

F18-39

9314

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

20941

Females

8203

F18-39

8203

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20888

Females

8164

F18-39

8164

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22385

Females

8993

F18-39

8993

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

20515

Females

7996

F18-39

7996

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19384

Females

7408

F18-39

7408

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19510

Females

7578

F18-39

7578

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19085

Females

7390

F18-39

7390

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

19316

Females

7557

F18-39

7557

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

18922

Females

7366

F18-39

7366

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20123

Females

8041

F18-39

8041

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17305

Females

6577

F18-39

6577

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15854

Females

5810

F18-39

5810

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15865

Females

5744

F18-39

5744

Passing Analysis

Category:
Athletes Passed
1937
Passed By
1987
Net Change
-50
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20088
5K → 10K121624-1612#20088#21700
10K → 15K30461+243#21700#21457
15K → 20K21972+147#21457#21310
20K → Half973-64#21310#21374
Half → 25K18532+153#21374#21221
25K → 30K35919+340#21221#20881
30K → 20M16419+145#20881#20736
20M → 21M12420+104#20736#20632
21M → 35K7114+57#20632#20575
35K → 23M13114+117#20575#20458
23M → 24M5633+23#20458#20435
24M → 40K1093+106#20435#20329
40K → 25.2M690+69#20329#20260
25.2M → Finish1253+122#20260#20138
TOTALS19371987-50
📊

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