Boston Marathon logo
BOSTON MARATHON 2023

Lara Dienemann

Bib: 27016•F

MA

0:00
0:00
/ mi
Be the first to cheer!
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
30:29
Rank: #22953
Start → 5K
30:29 | 9:49/mi
10K· 6.21 mi
1:00:41
Rank: #23087 (-134)
5K → 10K
30:12 | 9:43/mi
15K· 9.32 mi
1:30:28
Rank: #22899 (+188)
10K → 15K
29:47 | 9:35/mi
20K· 12.43 mi
2:00:47
Rank: #22725 (+174)
15K → 20K
30:19 | 9:45/mi
Half· 13.11 mi
2:07:12
Rank: #22688 (+37)
20K → Half
6:25 | 9:24/mi
25K· 15.53 mi
2:30:46
Rank: #22492 (+196)
Half → 25K
23:34 | 9:43/mi
30K· 18.64 mi
3:01:01
Rank: #22099 (+393)
25K → 30K
30:15 | 9:44/mi
20M
3:14:39
Rank: #21967 (+132)
30K → 20M
13:38 | 10:02/mi
21M
3:25:13
Rank: #21856 (+111)
20M → 21M
10:34 | 10:34/mi
35K· 21.75 mi
3:32:13
Rank: #21785 (+71)
21M → 35K
7:00 | 9:21/mi
23M
3:44:57
Rank: #21686 (+99)
35K → 23M
12:44 | 10:10/mi
24M
3:54:31
Rank: #21594 (+92)
23M → 24M
9:34 | 9:34/mi
40K· 24.85 mi
4:03:03
Rank: #21535 (+59)
24M → 40K
8:32 | 9:59/mi
25.2M
4:06:48
Rank: #21513 (+22)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
4:16:26
Rank: #21452 (+61)
25.2M → Finish
9:38 | 9:27/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:12
Pace9:42 /mi
2nd Half
Distance13.11 mi
Time2:09:14
Pace9:51 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:3330:299:4930:29
9:49
-
10K
6.21 mi12:23:451:00:419:4630:12
9:43
-0:06
15K
9.32 mi12:53:321:30:289:4229:47
9:35
-0:08
20K
12.43 mi13:23:512:00:479:4330:19
9:45
+0:10
Half
13.11 mi13:30:162:07:129:426:25
9:24
-0:21
25K
15.53 mi13:53:502:30:469:4223:34
9:43
+0:19
30K
18.64 mi14:24:053:01:019:4330:15
9:44
+0:01
20M
20.00 mi14:37:433:14:399:4413:38
10:02
+0:18
21M
21.00 mi14:48:173:25:139:4610:34
10:34
+0:32
35K
21.75 mi14:55:173:32:139:457:00
9:21
-1:13
23M
23.00 mi15:08:013:44:579:4712:44
10:10
+0:49
24M
24.00 mi15:17:353:54:319:469:34
9:34
-0:36
40K
24.85 mi15:26:074:03:039:478:32
9:59
+0:25
25.2M
25.20 mi15:29:524:06:489:483:45
10:52
+0:53
Finish
26.22 mi15:39:304:16:269:479:38
9:27
-1:25

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

9:21 /mi

Average Pace

9:47 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:02:07

94% of race

Time at Steady Pace

14:19

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:47 /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 mi11:53:3330:299:4930:29
9:49
#22953
10K
6.21 mi12:23:451:00:419:4630:12
9:43
#23087
15K
9.32 mi12:53:321:30:289:4229:47
9:35
#22899
20K
12.43 mi13:23:512:00:479:4330:19
9:45
#22725
Half
13.11 mi13:30:162:07:129:426:25
9:24
#22688
25K
15.53 mi13:53:502:30:469:4223:34
9:43
#22492
30K
18.64 mi14:24:053:01:019:4330:15
9:44
#22099
20M
20.00 mi14:37:433:14:399:4413:38
10:02
#21967
21M
21.00 mi14:48:173:25:139:4610:34
10:34
#21856
35K
21.75 mi14:55:173:32:139:457:00
9:21
#21785
23M
23.00 mi15:08:013:44:579:4712:44
10:10
#21686
24M
24.00 mi15:17:353:54:319:469:34
9:34
#21594
40K
24.85 mi15:26:074:03:039:478:32
9:59
#21535
25.2M
25.20 mi15:29:524:06:489:483:45
10:52
#21513
Finish
26.22 mi15:39:304:16:269:479:38
9:27
#21452
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi229539363936322490(Top 84%)9063(Top 79%)9063(Top 186%)
10K6.21 mi3.10 mi23087-1349410-479410-4723093(Top 87%)9380(Top 82%)9380(Top 192%)
15K9.32 mi3.11 mi22899+1889293+1179293+11722490(Top 84%)9063(Top 79%)9063(Top 186%)
20K12.43 mi3.11 mi22725+1749198+959198+9522307(Top 84%)8966(Top 78%)8966(Top 184%)
Half13.11 mi0.68 mi22688+379188+109188+1021847(Top 82%)8708(Top 76%)8708(Top 178%)
25K15.53 mi2.42 mi22492+1969099+899099+8921538(Top 81%)8578(Top 75%)8578(Top 176%)
30K18.64 mi3.11 mi22099+3938894+2058894+20520256(Top 76%)7915(Top 69%)7915(Top 162%)
20M20.00 mi1.36 mi21967+1328826+688826+6820576(Top 77%)8176(Top 72%)8176(Top 167%)
21M21.00 mi1.00 mi21856+1118772+548772+5419819(Top 74%)7833(Top 69%)7833(Top 160%)
35K21.75 mi0.75 mi21785+718743+298743+2919407(Top 73%)7615(Top 67%)7615(Top 156%)
23M23.00 mi1.25 mi21686+998706+378706+3720496(Top 77%)8229(Top 72%)8229(Top 168%)
24M24.00 mi1.00 mi21594+928668+388668+3819466(Top 73%)7705(Top 67%)7705(Top 158%)
40K24.85 mi0.85 mi21535+598647+218647+2119923(Top 75%)8024(Top 70%)8024(Top 164%)
25.2M25.20 mi0.35 mi21513+228637+108637+1020201(Top 76%)8170(Top 72%)8170(Top 167%)
Finish26.22 mi1.02 mi21452+618613+248613+2419976(Top 75%)7989(Top 70%)7989(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

22490

Females

9063

F18-39

9063

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23093

Females

9380

F18-39

9380

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

22490

Females

9063

F18-39

9063

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

22307

Females

8966

F18-39

8966

20K→Half

12.4 - 13.1 mi

Top 82%
×2stories
+19ft-37ft

Overall

21847

Females

8708

F18-39

8708

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21538

Females

8578

F18-39

8578

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20256

Females

7915

F18-39

7915

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20576

Females

8176

F18-39

8176

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19819

Females

7833

F18-39

7833

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

19407

Females

7615

F18-39

7615

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20496

Females

8229

F18-39

8229

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

19466

Females

7705

F18-39

7705

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

19923

Females

8024

F18-39

8024

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20201

Females

8170

F18-39

8170

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

19976

Females

7989

F18-39

7989

Passing Analysis

Category:
Athletes Passed
2039
Passed By
538
Net Change
+1501
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22953
5K → 10K158292-134#22953#23087
10K → 15K25769+188#23087#22899
15K → 20K22854+174#22899#22725
20K → Half425+37#22725#22688
Half → 25K21620+196#22688#22492
25K → 30K3996+393#22492#22099
30K → 20M1419+132#22099#21967
20M → 21M12413+111#21967#21856
21M → 35K743+71#21856#21785
35K → 23M11213+99#21785#21686
23M → 24M1019+92#21686#21594
24M → 40K7718+59#21594#21535
40K → 25.2M308+22#21535#21513
25.2M → Finish8019+61#21513#21452
TOTALS2039538+1501
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing