Boston Marathon logo
BOSTON MARATHON 2023

Janaina Santana

Bib: 2272•F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 20%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:38
Rank: #6035
Start → 5K
21:38 | 6:58/mi
10K· 6.21 mi
42:57
Rank: #5917 (+118)
5K → 10K
21:19 | 6:52/mi
15K· 9.32 mi
1:04:27
Rank: #5961 (-44)
10K → 15K
21:30 | 6:55/mi
20K· 12.43 mi
1:26:17
Rank: #6003 (-42)
15K → 20K
21:50 | 7:02/mi
Half· 13.11 mi
1:30:54
Rank: #5951 (+52)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:48:02
Rank: #5939 (+12)
Half → 25K
17:08 | 7:04/mi
30K· 18.64 mi
2:10:44
Rank: #5894 (+45)
25K → 30K
22:42 | 7:18/mi
20M
2:21:26
Rank: #6072 (-178)
30K → 20M
10:42 | 7:52/mi
21M
2:29:06
Rank: #5996 (+76)
20M → 21M
7:40 | 7:40/mi
35K· 21.75 mi
2:34:19
Rank: #5926 (+70)
21M → 35K
5:13 | 6:58/mi
23M
2:43:18
Rank: #5817 (+109)
35K → 23M
8:59 | 7:10/mi
24M
2:50:24
Rank: #5738 (+79)
23M → 24M
7:06 | 7:06/mi
40K· 24.85 mi
2:56:39
Rank: #5681 (+57)
24M → 40K
6:15 | 7:19/mi
25.2M
2:59:14
Rank: #5628 (+53)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
3:05:54
Rank: #5447 (+181)
25.2M → Finish
6:40 | 6:33/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
Time1:30:54
Pace6:56 /mi
2nd Half
Distance13.11 mi
Time1:35:00
Pace7:15 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1821:386:5821:38
6:58
-
10K
6.21 mi10:43:3742:576:5521:19
6:52
-0:06
15K
9.32 mi11:05:071:04:276:5521:30
6:55
+0:03
20K
12.43 mi11:26:571:26:176:5721:50
7:02
+0:07
Half
13.11 mi11:31:341:30:546:564:37
6:46
-0:16
25K
15.53 mi11:48:421:48:026:5717:08
7:04
+0:18
30K
18.64 mi12:11:242:10:447:0122:42
7:18
+0:14
20M
20.00 mi12:22:062:21:267:0410:42
7:52
+0:34
21M
21.00 mi12:29:462:29:067:067:40
7:40
-0:12
35K
21.75 mi12:34:592:34:197:065:13
6:58
-0:42
23M
23.00 mi12:43:582:43:187:068:59
7:10
+0:12
24M
24.00 mi12:51:042:50:247:067:06
7:06
-0:04
40K
24.85 mi12:57:192:56:397:066:15
7:19
+0:13
25.2M
25.20 mi12:59:542:59:147:072:35
7:29
+0:10
Finish
26.22 mi13:06:343:05:547:066:40
6:33
-0:56

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

6:33 /mi

Average Pace

7:06 /mi

Slowest Pace

7:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

32:36

18% of race

Time at Steady Pace

1:43:24

56% of race

Time at Slower Pace

49:54

27% of race

Average Pace: 7:05 /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 mi10:22:1821:386:5821:38
6:58
#6035
10K
6.21 mi10:43:3742:576:5521:19
6:52
#5917
15K
9.32 mi11:05:071:04:276:5521:30
6:55
#5961
20K
12.43 mi11:26:571:26:176:5721:50
7:02
#6003
Half
13.11 mi11:31:341:30:546:564:37
6:46
#5951
25K
15.53 mi11:48:421:48:026:5717:08
7:04
#5939
30K
18.64 mi12:11:242:10:447:0122:42
7:18
#5894
20M
20.00 mi12:22:062:21:267:0410:42
7:52
#6072
21M
21.00 mi12:29:462:29:067:067:40
7:40
#5996
35K
21.75 mi12:34:592:34:197:065:13
6:58
#5926
23M
23.00 mi12:43:582:43:187:068:59
7:10
#5817
24M
24.00 mi12:51:042:50:247:067:06
7:06
#5738
40K
24.85 mi12:57:192:56:397:066:15
7:19
#5681
25.2M
25.20 mi12:59:542:59:147:072:35
7:29
#5628
Finish
26.22 mi13:06:343:05:547:066:40
6:33
#5447
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi60355145146090(Top 23%)554(Top 5%)554(Top 11%)
10K6.21 mi3.10 mi5917+118489+25489+255855(Top 22%)501(Top 4%)501(Top 10%)
15K9.32 mi3.11 mi5961-44507-18507-186090(Top 23%)554(Top 5%)554(Top 11%)
20K12.43 mi3.11 mi6003-42519-12519-126159(Top 23%)563(Top 5%)563(Top 12%)
Half13.11 mi0.68 mi5951+52507+12507+125082(Top 19%)382(Top 3%)382(Top 8%)
25K15.53 mi2.42 mi5939+12501+6501+65951(Top 22%)535(Top 5%)535(Top 11%)
30K18.64 mi3.11 mi5894+45507-6507-66063(Top 23%)646(Top 6%)646(Top 13%)
20M20.00 mi1.36 mi6072-178557-50557-509394(Top 35%)1962(Top 17%)1962(Top 40%)
21M21.00 mi1.00 mi5996+76554+3554+35468(Top 21%)650(Top 6%)650(Top 13%)
35K21.75 mi0.75 mi5926+70543+11543+115233(Top 20%)554(Top 5%)554(Top 11%)
23M23.00 mi1.25 mi5817+109530+13530+134695(Top 18%)459(Top 4%)459(Top 9%)
24M24.00 mi1.00 mi5738+79523+7523+75219(Top 20%)628(Top 5%)628(Top 13%)
40K24.85 mi0.85 mi5681+57521+2521+25535(Top 21%)811(Top 7%)811(Top 17%)
25.2M25.20 mi0.35 mi5628+53514+7514+73934(Top 15%)423(Top 4%)423(Top 9%)
Finish26.22 mi1.02 mi5447+181481+33481+332715(Top 10%)236(Top 2%)236(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6090

Females

554

F18-39

554

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5855

Females

501

F18-39

501

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6090

Females

554

F18-39

554

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6159

Females

563

F18-39

563

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5082

Females

382

F18-39

382

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5951

Females

535

F18-39

535

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6063

Females

646

F18-39

646

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9394

Females

1962

F18-39

1962

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5468

Females

650

F18-39

650

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5233

Females

554

F18-39

554

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4695

Females

459

F18-39

459

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5219

Females

628

F18-39

628

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5535

Females

811

F18-39

811

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3934

Females

423

F18-39

423

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2715

Females

236

F18-39

236

Passing Analysis

Category:
Athletes Passed
1455
Passed By
867
Net Change
+588
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6035
5K → 10K251133+118#6035#5917
10K → 15K111155-44#5917#5961
15K → 20K81123-42#5961#6003
20K → Half542+52#6003#5951
Half → 25K8270+12#5951#5939
25K → 30K147102+45#5939#5894
30K → 20M27205-178#5894#6072
20M → 21M9721+76#6072#5996
21M → 35K766+70#5996#5926
35K → 23M11910+109#5926#5817
23M → 24M9415+79#5817#5738
24M → 40K7821+57#5738#5681
40K → 25.2M552+53#5681#5628
25.2M → Finish1832+181#5628#5447
TOTALS1455867+588
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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