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BOSTON MARATHON 2023

Katie Tosh

Bib: 11156•F

IL

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
8:16/mi
25:42
↑ 97↓ 3451.5%
10K· 6.21 mi
8:17/mi
51:25
↑ 79↓ 1380.4%
15K· 9.32 mi
8:44/mi
1:18:32
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:44:59
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:50:40
↑ 19↓ 370.5%
25K· 15.53 mi
8:54/mi
2:12:15
↑ 66↓ 880.2%
30K· 18.64 mi
9:15/mi
2:41:00
↑ 181↓ 1480.2%
20M
9:24/mi
2:53:47
↑ 64↓ 500.2%
21M
10:59/mi
3:04:46
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:11:16
↑ 17↓ 861.7%
23M
9:43/mi
3:23:26
↑ 23↓ 630.6%
24M
8:53/mi
3:32:19
↓ 821.3%
40K· 24.85 mi
9:04/mi
3:40:04
↓ 200.3%
25.2M
10:21/mi
3:43:38
↑ 13↓ 160.2%
Finish· 26.22 mi
8:46/mi
3:52:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:40
Pace8:26 /mi
2nd Half
Distance13.11 mi
Time2:01:54
Pace9:18 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:2925:428:1625:42
8:16
-
10K
6.21 mi11:19:1251:258:1625:43
8:17
+0:01
15K
9.32 mi11:46:191:18:328:2627:07
8:44
+0:27
20K
12.43 mi12:12:461:44:598:2726:27
8:31
-0:13
Half
13.11 mi12:18:271:50:408:265:41
8:20
-0:11
25K
15.53 mi12:40:022:12:158:3121:35
8:54
+0:34
30K
18.64 mi13:08:472:41:008:3828:45
9:15
+0:21
20M
20.00 mi13:21:342:53:478:4112:47
9:24
+0:09
21M
21.00 mi13:32:333:04:468:4810:59
10:59
+1:35
35K
21.75 mi13:39:033:11:168:486:30
8:41
-2:18
23M
23.00 mi13:51:133:23:268:5112:10
9:43
+1:02
24M
24.00 mi14:00:063:32:198:518:53
8:53
-0:50
40K
24.85 mi14:07:513:40:048:517:45
9:04
+0:11
25.2M
25.20 mi14:11:253:43:388:523:34
10:21
+1:17
Finish
26.22 mi14:20:213:52:348:538:56
8:46
-1:35

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

8:53 /mi

Slowest Pace

10:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

57:06

25% of race

Time at Steady Pace

2:15:58

58% of race

Time at Slower Pace

39:30

17% of race

Average Pace: 8:52 /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 mi10:53:2925:428:1625:42
8:16
#15976
10K
6.21 mi11:19:1251:258:1625:43
8:17
#16334
15K
9.32 mi11:46:191:18:328:2627:07
8:44
#17371
20K
12.43 mi12:12:461:44:598:2726:27
8:31
#17240
Half
13.11 mi12:18:271:50:408:265:41
8:20
#17207
25K
15.53 mi12:40:022:12:158:3121:35
8:54
#17408
30K
18.64 mi13:08:472:41:008:3828:45
9:15
#17585
20M
20.00 mi13:21:342:53:478:4112:47
9:24
#17668
21M
21.00 mi13:32:333:04:468:4810:59
10:59
#17965
35K
21.75 mi13:39:033:11:168:486:30
8:41
#17917
23M
23.00 mi13:51:133:23:268:5112:10
9:43
#18027
24M
24.00 mi14:00:063:32:198:518:53
8:53
#17962
40K
24.85 mi14:07:513:40:048:517:45
9:04
#17916
25.2M
25.20 mi14:11:253:43:388:523:34
10:21
#17929
Finish
26.22 mi14:20:213:52:348:538:56
8:46
#17898
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi159765266526619128(Top 72%)7176(Top 63%)7176(Top 147%)
10K6.21 mi3.10 mi16334-3585483-2175483-21716783(Top 63%)5740(Top 50%)5740(Top 118%)
15K9.32 mi3.11 mi17371-10376138-6556138-65519128(Top 72%)7176(Top 63%)7176(Top 147%)
20K12.43 mi3.11 mi17240+1316074+646074+6416962(Top 64%)5909(Top 52%)5909(Top 121%)
Half13.11 mi0.68 mi17207+336050+246050+2416745(Top 63%)5756(Top 50%)5756(Top 118%)
25K15.53 mi2.42 mi17408-2016184-1346184-13418470(Top 69%)6827(Top 60%)6827(Top 140%)
30K18.64 mi3.11 mi17585-1776310-1266310-12618422(Top 69%)6877(Top 60%)6877(Top 141%)
20M20.00 mi1.36 mi17668-836372-626372-6218490(Top 69%)7020(Top 61%)7020(Top 144%)
21M21.00 mi1.00 mi17965-2976569-1976569-19720804(Top 78%)8352(Top 73%)8352(Top 171%)
35K21.75 mi0.75 mi17917+486549+206549+2016386(Top 62%)5935(Top 52%)5935(Top 122%)
23M23.00 mi1.25 mi18027-1106623-746623-7419140(Top 72%)7488(Top 66%)7488(Top 153%)
24M24.00 mi1.00 mi17962+656601+226601+2216713(Top 63%)6207(Top 54%)6207(Top 127%)
40K24.85 mi0.85 mi17916+466585+166585+1616512(Top 62%)6142(Top 54%)6142(Top 126%)
25.2M25.20 mi0.35 mi17929-136597-126597-1218630(Top 70%)7292(Top 64%)7292(Top 149%)
Finish26.22 mi1.02 mi17898+316590+76590+716879(Top 63%)6311(Top 55%)6311(Top 129%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19128

Females

7176

F18-39

7176

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

16783

Females

5740

F18-39

5740

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19128

Females

7176

F18-39

7176

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16962

Females

5909

F18-39

5909

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16745

Females

5756

F18-39

5756

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18470

Females

6827

F18-39

6827

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18422

Females

6877

F18-39

6877

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18490

Females

7020

F18-39

7020

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

20804

Females

8352

F18-39

8352

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

16386

Females

5935

F18-39

5935

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

19140

Females

7488

F18-39

7488

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16713

Females

6207

F18-39

6207

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16512

Females

6142

F18-39

6142

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18630

Females

7292

F18-39

7292

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16879

Females

6311

F18-39

6311

Passing Analysis

Category:
Athletes Passed
1107
Passed By
3029
Net Change
-1922
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15976
5K → 10K162520-358#15976#16334
10K → 15K191056-1037#16334#17371
15K → 20K23099+131#17371#17240
20K → Half4916+33#17240#17207
Half → 25K80281-201#17207#17408
25K → 30K123300-177#17408#17585
30K → 20M52135-83#17585#17668
20M → 21M22319-297#17668#17965
21M → 35K6315+48#17965#17917
35K → 23M53163-110#17917#18027
23M → 24M8621+65#18027#17962
24M → 40K7630+46#17962#17916
40K → 25.2M2134-13#17916#17929
25.2M → Finish7140+31#17929#17898
TOTALS11073029-1922
📊

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