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BOSTON MARATHON 2023

Tanya Lerch

Bib: 9039•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 18%
Division (F18-39)
#0 / 4884
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:45
Rank: #8235
Start → 5K
22:45 | 7:19/mi
10K· 6.21 mi
45:29
Rank: #8586 (-351)
5K → 10K
22:45 | 7:19/mi
15K· 9.32 mi
1:08:01
Rank: #8450 (+136)
10K → 15K
22:32 | 7:15/mi
20K· 12.43 mi
1:30:53
Rank: #8344 (+106)
15K → 20K
22:52 | 7:22/mi
Half· 13.11 mi
1:35:51
Rank: #8358 (-14)
20K → Half
4:58 | 7:17/mi
25K· 15.53 mi
1:54:11
Rank: #8443 (-85)
Half → 25K
18:20 | 7:34/mi
30K· 18.64 mi
2:18:33
Rank: #8632 (-189)
25K → 30K
24:22 | 7:51/mi
20M
2:29:33
Rank: #8777 (-145)
30K → 20M
11:00 | 8:06/mi
21M
2:38:22
Rank: #8971 (-194)
20M → 21M
8:49 | 8:49/mi
35K· 21.75 mi
2:44:41
Rank: #9179 (-208)
21M → 35K
6:19 | 8:27/mi
23M
2:55:15
Rank: #9371 (-192)
35K → 23M
10:34 | 8:27/mi
24M
3:03:42
Rank: #9581 (-210)
23M → 24M
8:27 | 8:27/mi
40K· 24.85 mi
3:11:08
Rank: #9758 (-177)
24M → 40K
7:26 | 8:42/mi
25.2M
3:14:23
Rank: #9835 (-77)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:22:55
Rank: #10026 (-191)
25.2M → Finish
8:32 | 8:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:51
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:47:04
Pace8:10 /mi
📊Positive Split: 11.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1922:457:1922:45
7:19
-
10K
6.21 mi11:11:0345:297:1922:45
7:19
0:00
15K
9.32 mi11:33:351:08:017:1822:32
7:15
-0:04
20K
12.43 mi11:56:271:30:537:1922:52
7:22
+0:07
Half
13.11 mi12:01:251:35:517:194:58
7:17
-0:05
25K
15.53 mi12:19:451:54:117:2118:20
7:34
+0:17
30K
18.64 mi12:44:072:18:337:2624:22
7:51
+0:17
20M
20.00 mi12:55:072:29:337:2911:00
8:06
+0:15
21M
21.00 mi13:03:562:38:227:328:49
8:49
+0:43
35K
21.75 mi13:10:152:44:417:346:19
8:27
-0:22
23M
23.00 mi13:20:492:55:157:3710:34
8:27
0:00
24M
24.00 mi13:29:163:03:427:398:27
8:27
0:00
40K
24.85 mi13:36:423:11:087:417:26
8:42
+0:15
25.2M
25.20 mi13:39:573:14:237:433:15
9:25
+0:43
Finish
26.22 mi13:48:293:22:557:458:32
8:22
-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

7:15 /mi

Average Pace

7:45 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:11

56% of race

Time at Steady Pace

43:54

22% of race

Time at Slower Pace

44:50

22% of race

Average Pace: 7:44 /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 mi10:48:1922:457:1922:45
7:19
#8235
10K
6.21 mi11:11:0345:297:1922:45
7:19
#8586
15K
9.32 mi11:33:351:08:017:1822:32
7:15
#8450
20K
12.43 mi11:56:271:30:537:1922:52
7:22
#8344
Half
13.11 mi12:01:251:35:517:194:58
7:17
#8358
25K
15.53 mi12:19:451:54:117:2118:20
7:34
#8443
30K
18.64 mi12:44:072:18:337:2624:22
7:51
#8632
20M
20.00 mi12:55:072:29:337:2911:00
8:06
#8777
21M
21.00 mi13:03:562:38:227:328:49
8:49
#8971
35K
21.75 mi13:10:152:44:417:346:19
8:27
#9179
23M
23.00 mi13:20:492:55:157:3710:34
8:27
#9371
24M
24.00 mi13:29:163:03:427:398:27
8:27
#9581
40K
24.85 mi13:36:423:11:087:417:26
8:42
#9758
25.2M
25.20 mi13:39:573:14:237:433:15
9:25
#9835
Finish
26.22 mi13:48:293:22:557:458:32
8:22
#10026
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 mi8235110611068204(Top 31%)1149(Top 10%)1149(Top 24%)
10K6.21 mi3.10 mi8586-3511254-1481254-1489007(Top 34%)1417(Top 12%)1417(Top 29%)
15K9.32 mi3.11 mi8450+1361198+561198+568204(Top 31%)1149(Top 10%)1149(Top 24%)
20K12.43 mi3.11 mi8344+1061174+241174+248241(Top 31%)1198(Top 10%)1198(Top 25%)
Half13.11 mi0.68 mi8358-141184-101184-108539(Top 32%)1318(Top 12%)1318(Top 27%)
25K15.53 mi2.42 mi8443-851237-531237-539271(Top 35%)1671(Top 15%)1671(Top 34%)
30K18.64 mi3.11 mi8632-1891351-1141351-1149694(Top 36%)2017(Top 18%)2017(Top 41%)
20M20.00 mi1.36 mi8777-1451417-661417-6610986(Top 41%)2719(Top 24%)2719(Top 56%)
21M21.00 mi1.00 mi8971-1941523-1061523-10612361(Top 46%)3597(Top 31%)3597(Top 74%)
35K21.75 mi0.75 mi9179-2081621-981621-9815050(Top 57%)5155(Top 45%)5155(Top 106%)
23M23.00 mi1.25 mi9371-1921721-1001721-10012897(Top 48%)4021(Top 35%)4021(Top 82%)
24M24.00 mi1.00 mi9581-2101834-1131834-11314144(Top 53%)4771(Top 42%)4771(Top 98%)
40K24.85 mi0.85 mi9758-1771949-1151949-11514470(Top 54%)5000(Top 44%)5000(Top 102%)
25.2M25.20 mi0.35 mi9835-771996-471996-4714825(Top 56%)5183(Top 45%)5183(Top 106%)
Finish26.22 mi1.02 mi10026-1912105-1092105-10914566(Top 55%)5017(Top 44%)5017(Top 103%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8204

Females

1149

F18-39

1149

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

9007

Females

1417

F18-39

1417

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8204

Females

1149

F18-39

1149

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8241

Females

1198

F18-39

1198

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

8539

Females

1318

F18-39

1318

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9271

Females

1671

F18-39

1671

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9694

Females

2017

F18-39

2017

30K→20M

18.6 - 20.0 mi

Top 41%
×5stories
+64ft-50ft

Overall

10986

Females

2719

F18-39

2719

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12361

Females

3597

F18-39

3597

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

15050

Females

5155

F18-39

5155

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12897

Females

4021

F18-39

4021

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

14144

Females

4771

F18-39

4771

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14470

Females

5000

F18-39

5000

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

14825

Females

5183

F18-39

5183

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2stories
+22ft-21ft

Overall

14566

Females

5017

F18-39

5017

Passing Analysis

Category:
Athletes Passed
911*
Passed By
2701
Net Change
-1791
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8235
5K → 10K117468-351#8235#8586
10K → 15K20973+136#8586#8450
15K → 20K18276+106#8450#8344
20K → Half1226-14#8344#8358
Half → 25K78163-85#8358#8443
25K → 30K109298-189#8443#8632
30K → 20M38183-145#8632#8777
20M → 21M37231-194#8777#8971
21M → 35K8216-208#8971#9179
35K → 23M34226-192#9179#9371
23M → 24M24234-210#9371#9581
24M → 40K21*198-177#9581#9758
40K → 25.2M2097-77#9758#9835
25.2M → Finish22212-191#9835#10026
TOTALS911*2701-1791

* 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