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BOSTON MARATHON 2023

Phoebe Crosthwaite

Bib: 16258•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:43
Rank: #10860
Start → 5K
23:43 | 7:38/mi
10K· 6.21 mi
47:53
Rank: #11873 (-1013)
5K → 10K
24:10 | 7:47/mi
15K· 9.32 mi
1:12:01
Rank: #12024 (-151)
10K → 15K
24:08 | 7:46/mi
20K· 12.43 mi
1:36:12
Rank: #11887 (+137)
15K → 20K
24:11 | 7:47/mi
Half· 13.11 mi
1:41:26
Rank: #11872 (+15)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
2:00:17
Rank: #11662 (+210)
Half → 25K
18:51 | 7:46/mi
30K· 18.64 mi
2:24:44
Rank: #11287 (+375)
25K → 30K
24:27 | 7:52/mi
20M
2:35:32
Rank: #11159 (+128)
30K → 20M
10:48 | 7:57/mi
21M
2:43:36
Rank: #10933 (+226)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:49:10
Rank: #10801 (+132)
21M → 35K
5:34 | 7:26/mi
23M
2:58:41
Rank: #10556 (+245)
35K → 23M
9:31 | 7:36/mi
24M
3:05:58
Rank: #10326 (+230)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
3:11:55
Rank: #10012 (+314)
24M → 40K
5:57 | 6:58/mi
25.2M
3:14:27
Rank: #9861 (+151)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
3:21:18
Rank: #9535 (+326)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:26
Pace7:44 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:52
Pace7:37 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:5023:437:3823:43
7:38
-
10K
6.21 mi11:38:0047:537:4224:10
7:47
+0:09
15K
9.32 mi12:02:081:12:017:4424:08
7:46
-0:01
20K
12.43 mi12:26:191:36:127:4424:11
7:47
+0:01
Half
13.11 mi12:31:331:41:267:445:14
7:40
-0:07
25K
15.53 mi12:50:242:00:177:4518:51
7:46
+0:06
30K
18.64 mi13:14:512:24:447:4624:27
7:52
+0:06
20M
20.00 mi13:25:392:35:327:4710:48
7:57
+0:05
21M
21.00 mi13:33:432:43:367:478:04
8:04
+0:07
35K
21.75 mi13:39:172:49:107:475:34
7:26
-0:38
23M
23.00 mi13:48:482:58:417:469:31
7:36
+0:10
24M
24.00 mi13:56:053:05:587:457:17
7:17
-0:19
40K
24.85 mi14:02:023:11:557:435:57
6:58
-0:19
25.2M
25.20 mi14:04:343:14:277:432:32
7:21
+0:23
Finish
26.22 mi14:11:253:21:187:416:51
6:43
-0:38

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

6:43 /mi

Average Pace

7:41 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:11

14% of race

Time at Steady Pace

2:09:48

64% of race

Time at Slower Pace

43:19

22% of race

Average Pace: 7:41 /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 mi11:13:5023:437:3823:43
7:38
#10860
10K
6.21 mi11:38:0047:537:4224:10
7:47
#11873
15K
9.32 mi12:02:081:12:017:4424:08
7:46
#12024
20K
12.43 mi12:26:191:36:127:4424:11
7:47
#11887
Half
13.11 mi12:31:331:41:267:445:14
7:40
#11872
25K
15.53 mi12:50:242:00:177:4518:51
7:46
#11662
30K
18.64 mi13:14:512:24:447:4624:27
7:52
#11287
20M
20.00 mi13:25:392:35:327:4710:48
7:57
#11159
21M
21.00 mi13:33:432:43:367:478:04
8:04
#10933
35K
21.75 mi13:39:172:49:107:475:34
7:26
#10801
23M
23.00 mi13:48:482:58:417:469:31
7:36
#10556
24M
24.00 mi13:56:053:05:587:457:17
7:17
#10326
40K
24.85 mi14:02:023:11:557:435:57
6:58
#10012
25.2M
25.20 mi14:04:343:14:277:432:32
7:21
#9861
Finish
26.22 mi14:11:253:21:187:416:51
6:43
#9535
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi108602256225612447(Top 47%)3152(Top 28%)3152(Top 65%)
10K6.21 mi3.10 mi11873-10132801-5452801-54512946(Top 49%)3392(Top 30%)3392(Top 69%)
15K9.32 mi3.11 mi12024-1512905-1042905-10412447(Top 47%)3152(Top 28%)3152(Top 65%)
20K12.43 mi3.11 mi11887+1372850+552850+5511605(Top 44%)2735(Top 24%)2735(Top 56%)
Half13.11 mi0.68 mi11872+152839+112839+1111632(Top 44%)2676(Top 23%)2676(Top 55%)
25K15.53 mi2.42 mi11662+2102733+1062733+10610899(Top 41%)2428(Top 21%)2428(Top 50%)
30K18.64 mi3.11 mi11287+3752579+1542579+1549908(Top 37%)2111(Top 18%)2111(Top 43%)
20M20.00 mi1.36 mi11159+1282519+602519+609904(Top 37%)2184(Top 19%)2184(Top 45%)
21M21.00 mi1.00 mi10933+2262427+922427+927833(Top 29%)1448(Top 13%)1448(Top 30%)
35K21.75 mi0.75 mi10801+1322373+542373+548157(Top 31%)1575(Top 14%)1575(Top 32%)
23M23.00 mi1.25 mi10556+2452281+922281+927132(Top 27%)1229(Top 11%)1229(Top 25%)
24M24.00 mi1.00 mi10326+2302185+962185+966307(Top 24%)1026(Top 9%)1026(Top 21%)
40K24.85 mi0.85 mi10012+3142068+1172068+1173674(Top 14%)357(Top 3%)357(Top 7%)
25.2M25.20 mi0.35 mi9861+1512008+602008+603279(Top 12%)309(Top 3%)309(Top 6%)
Finish26.22 mi1.02 mi9535+3261881+1271881+1273682(Top 14%)406(Top 4%)406(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

12447

Females

3152

F18-39

3152

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

12946

Females

3392

F18-39

3392

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

12447

Females

3152

F18-39

3152

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11605

Females

2735

F18-39

2735

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

11632

Females

2676

F18-39

2676

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10899

Females

2428

F18-39

2428

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9908

Females

2111

F18-39

2111

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9904

Females

2184

F18-39

2184

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7833

Females

1448

F18-39

1448

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8157

Females

1575

F18-39

1575

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7132

Females

1229

F18-39

1229

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6307

Females

1026

F18-39

1026

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3674

Females

357

F18-39

357

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3279

Females

309

F18-39

309

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3682

Females

406

F18-39

406

Passing Analysis

Category:
Athletes Passed
2940*
Passed By
1615
Net Change
+1325
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10860
5K → 10K601073-1013#10860#11873
10K → 15K138289-151#11873#12024
15K → 20K23699+137#12024#11887
20K → Half3924+15#11887#11872
Half → 25K25242+210#11872#11662
25K → 30K40429+375#11662#11287
30K → 20M16436+128#11287#11159
20M → 21M2315+226#11159#10933
21M → 35K1408+132#10933#10801
35K → 23M2483+245#10801#10556
23M → 24M2333+230#10556#10326
24M → 40K3140+314#10326#10012
40K → 25.2M152*1+151#10012#9861
25.2M → Finish329*3+326#9861#9535
TOTALS2940*1615+1325

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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