Boston Marathon logo
BOSTON MARATHON 2023

Isabel Lane

Bib: 12921•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 23%
Gender (Female)
#0 / 11423
Top 6%
Division (F18-39)
#0 / 4884
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:16
Rank: #5124
Start → 5K
6:51/mi
21:16 split
10K· 6.21 mi
42:16
Rank: #4993 (+131)
5K → 10K
6:46/mi
21:00 split
15K· 9.32 mi
1:03:38
Rank: #5245 (-252)
10K → 15K
6:53/mi
21:22 split
20K· 12.43 mi
1:25:36
Rank: #5621 (-376)
15K → 20K
7:04/mi
21:58 split
Half· 13.11 mi
1:30:27
Rank: #5724 (-103)
20K → Half
7:07/mi
4:51 split
25K· 15.53 mi
1:48:00
Rank: #5923 (-199)
Half → 25K
7:14/mi
17:33 split
30K· 18.64 mi
2:11:16
Rank: #6074 (-151)
25K → 30K
7:29/mi
23:16 split
20M
2:21:43
Rank: #6151 (-77)
30K → 20M
7:41/mi
10:27 split
21M
2:29:50
Rank: #6192 (-41)
20M → 21M
8:07/mi
8:07 split
35K· 21.75 mi
2:35:24
Rank: #6236 (-44)
21M → 35K
7:26/mi
5:34 split
23M
2:44:50
Rank: #6202 (+34)
35K → 23M
7:32/mi
9:26 split
24M
2:52:17
Rank: #6186 (+16)
23M → 24M
7:27/mi
7:27 split
40K· 24.85 mi
2:58:47
Rank: #6194 (-8)
24M → 40K
7:36/mi
6:30 split
25.2M
3:01:33
Rank: #6178 (+16)
40K → 25.2M
8:01/mi
2:46 split
Finish· 26.22 mi
3:08:55
Rank: #6168 (+10)
25.2M → Finish
7:14/mi
7:22 split

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
Time1:30:27
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:38:28
Pace7:31 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1721:166:5121:16
6:51
-
10K
6.21 mi11:10:1742:166:4821:00
6:46
-0:05
15K
9.32 mi11:31:391:03:386:5021:22
6:53
+0:07
20K
12.43 mi11:53:371:25:366:5321:58
7:04
+0:11
Half
13.11 mi11:58:281:30:276:544:51
7:07
+0:03
25K
15.53 mi12:16:011:48:006:5717:33
7:14
+0:07
30K
18.64 mi12:39:172:11:167:0323:16
7:29
+0:15
20M
20.00 mi12:49:442:21:437:0510:27
7:41
+0:12
21M
21.00 mi12:57:512:29:507:088:07
8:07
+0:26
35K
21.75 mi13:03:252:35:247:095:34
7:26
-0:41
23M
23.00 mi13:12:512:44:507:109:26
7:32
+0:06
24M
24.00 mi13:20:182:52:177:117:27
7:27
-0:05
40K
24.85 mi13:26:482:58:477:126:30
7:36
+0:09
25.2M
25.20 mi13:29:343:01:337:122:46
8:01
+0:25
Finish
26.22 mi13:36:563:08:557:137:22
7:14
-0:47

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

6:46 /mi

Average Pace

7:13 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:56

64% of race

Time at Steady Pace

57:06

30% of race

Time at Slower Pace

10:53

6% of race

Average Pace: 7:12 /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 mi10:49:1721:166:5121:16
6:51
#5124
10K
6.21 mi11:10:1742:166:4821:00
6:46
#4993
15K
9.32 mi11:31:391:03:386:5021:22
6:53
#5245
20K
12.43 mi11:53:371:25:366:5321:58
7:04
#5621
Half
13.11 mi11:58:281:30:276:544:51
7:07
#5724
25K
15.53 mi12:16:011:48:006:5717:33
7:14
#5923
30K
18.64 mi12:39:172:11:167:0323:16
7:29
#6074
20M
20.00 mi12:49:442:21:437:0510:27
7:41
#6151
21M
21.00 mi12:57:512:29:507:088:07
8:07
#6192
35K
21.75 mi13:03:252:35:247:095:34
7:26
#6236
23M
23.00 mi13:12:512:44:507:109:26
7:32
#6202
24M
24.00 mi13:20:182:52:177:117:27
7:27
#6186
40K
24.85 mi13:26:482:58:477:126:30
7:36
#6194
25.2M
25.20 mi13:29:343:01:337:122:46
8:01
#6178
Finish
26.22 mi13:36:563:08:557:137:22
7:14
#6168
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi51243693695809(Top 22%)492(Top 4%)492(Top 10%)
10K6.21 mi3.10 mi4993+131356+13356+134926(Top 19%)353(Top 3%)353(Top 7%)
15K9.32 mi3.11 mi5245-252380-24380-245809(Top 22%)492(Top 4%)492(Top 10%)
20K12.43 mi3.11 mi5621-376437-57437-576405(Top 24%)626(Top 5%)626(Top 13%)
Half13.11 mi0.68 mi5724-103457-20457-207266(Top 27%)832(Top 7%)832(Top 17%)
25K15.53 mi2.42 mi5923-199497-40497-406898(Top 26%)801(Top 7%)801(Top 16%)
30K18.64 mi3.11 mi6074-151547-50547-507158(Top 27%)980(Top 9%)980(Top 20%)
20M20.00 mi1.36 mi6151-77582-35582-358114(Top 30%)1435(Top 13%)1435(Top 29%)
21M21.00 mi1.00 mi6192-41602-20602-208121(Top 31%)1559(Top 14%)1559(Top 32%)
35K21.75 mi0.75 mi6236-44615-13615-138109(Top 30%)1527(Top 13%)1527(Top 31%)
23M23.00 mi1.25 mi6202+34619-4619-46638(Top 25%)1029(Top 9%)1029(Top 21%)
24M24.00 mi1.00 mi6186+16629-10629-107379(Top 28%)1426(Top 12%)1426(Top 29%)
40K24.85 mi0.85 mi6194-8640-11640-117357(Top 28%)1496(Top 13%)1496(Top 31%)
25.2M25.20 mi0.35 mi6178+16643-3643-36691(Top 25%)1277(Top 11%)1277(Top 26%)
Finish26.22 mi1.02 mi6168+10659-16659-166636(Top 25%)1287(Top 11%)1287(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

5809

Females

492

F18-39

492

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4926

Females

353

F18-39

353

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

5809

Females

492

F18-39

492

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6405

Females

626

F18-39

626

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7266

Females

832

F18-39

832

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

6898

Females

801

F18-39

801

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7158

Females

980

F18-39

980

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8114

Females

1435

F18-39

1435

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8121

Females

1559

F18-39

1559

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8109

Females

1527

F18-39

1527

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6638

Females

1029

F18-39

1029

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7379

Females

1426

F18-39

1426

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7357

Females

1496

F18-39

1496

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6691

Females

1277

F18-39

1277

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

6636

Females

1287

F18-39

1287

Passing Analysis

Category:
Athletes Passed
830
Passed By
1874
Net Change
-1044
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5124
5K → 10K276145+131#5124#4993
10K → 15K40292-252#4993#5245
15K → 20K36412-376#5245#5621
20K → Half2105-103#5621#5724
Half → 25K25224-199#5724#5923
25K → 30K80231-151#5923#6074
30K → 20M40117-77#6074#6151
20M → 21M3778-41#6151#6192
21M → 35K1660-44#6192#6236
35K → 23M8147+34#6236#6202
23M → 24M6751+16#6202#6186
24M → 40K4755-8#6186#6194
40K → 25.2M2913+16#6194#6178
25.2M → Finish5444+10#6178#6168
TOTALS8301874-1044
📊

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