Boston Marathon logo
BOSTON MARATHON 2023

Marta Di Santo

Bib: 21617•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:00
Rank: #18822
Start → 5K
27:00 | 8:41/mi
10K· 6.21 mi
54:43
Rank: #19720 (-898)
5K → 10K
27:43 | 8:55/mi
15K· 9.32 mi
1:23:43
Rank: #20491 (-771)
10K → 15K
29:00 | 9:20/mi
20K· 12.43 mi
1:51:56
Rank: #20398 (+93)
15K → 20K
28:13 | 9:05/mi
Half· 13.11 mi
1:58:03
Rank: #20392 (+6)
20K → Half
6:07 | 8:58/mi
25K· 15.53 mi
2:21:12
Rank: #20509 (-117)
Half → 25K
23:09 | 9:33/mi
30K· 18.64 mi
2:50:42
Rank: #20300 (+209)
25K → 30K
29:30 | 9:30/mi
20M
3:04:39
Rank: #20376 (-76)
30K → 20M
13:57 | 10:16/mi
21M
3:15:10
Rank: #20310 (+66)
20M → 21M
10:31 | 10:31/mi
35K· 21.75 mi
3:21:50
Rank: #20223 (+87)
21M → 35K
6:40 | 8:55/mi
23M
3:33:09
Rank: #20006 (+217)
35K → 23M
11:19 | 9:02/mi
24M
3:41:43
Rank: #19821 (+185)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:48:59
Rank: #19631 (+190)
24M → 40K
7:16 | 8:30/mi
25.2M
3:52:03
Rank: #19540 (+91)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
4:00:24
Rank: #19386 (+154)
25.2M → Finish
8:21 | 8:12/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
Time1:58:03
Pace9:00 /mi
2nd Half
Distance13.11 mi
Time2:02:21
Pace9:20 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4227:008:4127:00
8:41
-
10K
6.21 mi11:48:2554:438:4827:43
8:55
+0:14
15K
9.32 mi12:17:251:23:438:5929:00
9:20
+0:25
20K
12.43 mi12:45:381:51:569:0028:13
9:05
-0:15
Half
13.11 mi12:51:451:58:039:006:07
8:58
-0:07
25K
15.53 mi13:14:542:21:129:0523:09
9:33
+0:35
30K
18.64 mi13:44:242:50:429:0929:30
9:30
-0:03
20M
20.00 mi13:58:213:04:399:1413:57
10:16
+0:46
21M
21.00 mi14:08:523:15:109:1810:31
10:31
+0:15
35K
21.75 mi14:15:323:21:509:176:40
8:55
-1:36
23M
23.00 mi14:26:513:33:099:1611:19
9:02
+0:07
24M
24.00 mi14:35:253:41:439:148:34
8:34
-0:28
40K
24.85 mi14:42:413:48:599:137:16
8:30
-0:04
25.2M
25.20 mi14:45:453:52:039:133:04
8:54
+0:24
Finish
26.22 mi14:54:064:00:249:118:21
8:12
-0:42

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

8:12 /mi

Average Pace

9:11 /mi

Slowest Pace

10:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:11

10% of race

Time at Steady Pace

1:50:06

46% of race

Time at Slower Pace

1:46:07

44% of race

Average Pace: 9:10 /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 mi11:20:4227:008:4127:00
8:41
#18822
10K
6.21 mi11:48:2554:438:4827:43
8:55
#19720
15K
9.32 mi12:17:251:23:438:5929:00
9:20
#20491
20K
12.43 mi12:45:381:51:569:0028:13
9:05
#20398
Half
13.11 mi12:51:451:58:039:006:07
8:58
#20392
25K
15.53 mi13:14:542:21:129:0523:09
9:33
#20509
30K
18.64 mi13:44:242:50:429:0929:30
9:30
#20300
20M
20.00 mi13:58:213:04:399:1413:57
10:16
#20376
21M
21.00 mi14:08:523:15:109:1810:31
10:31
#20310
35K
21.75 mi14:15:323:21:509:176:40
8:55
#20223
23M
23.00 mi14:26:513:33:099:1611:19
9:02
#20006
24M
24.00 mi14:35:253:41:439:148:34
8:34
#19821
40K
24.85 mi14:42:413:48:599:137:16
8:30
#19631
25.2M
25.20 mi14:45:453:52:039:133:04
8:54
#19540
Finish
26.22 mi14:54:064:00:249:118:21
8:12
#19386
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi188227090709021751(Top 82%)8645(Top 76%)8645(Top 716%)
10K6.21 mi3.10 mi19720-8987602-5127602-51220528(Top 77%)7994(Top 70%)7994(Top 662%)
15K9.32 mi3.11 mi20491-7718011-4098011-40921751(Top 82%)8645(Top 76%)8645(Top 716%)
20K12.43 mi3.11 mi20398+937943+687943+6820060(Top 75%)7707(Top 67%)7707(Top 639%)
Half13.11 mi0.68 mi20392+67939+47939+420322(Top 76%)7857(Top 69%)7857(Top 651%)
25K15.53 mi2.42 mi20509-1177990-517990-5120999(Top 79%)8265(Top 72%)8265(Top 685%)
30K18.64 mi3.11 mi20300+2097899+917899+9119427(Top 73%)7431(Top 65%)7431(Top 616%)
20M20.00 mi1.36 mi20376-767952-537952-5321181(Top 80%)8504(Top 74%)8504(Top 705%)
21M21.00 mi1.00 mi20310+667925+277925+2719654(Top 74%)7735(Top 68%)7735(Top 641%)
35K21.75 mi0.75 mi20223+877888+377888+3717552(Top 66%)6594(Top 58%)6594(Top 546%)
23M23.00 mi1.25 mi20006+2177770+1187770+11816283(Top 61%)5910(Top 52%)5910(Top 490%)
24M24.00 mi1.00 mi19821+1857662+1087662+10814923(Top 56%)5200(Top 46%)5200(Top 431%)
40K24.85 mi0.85 mi19631+1907566+967566+9613408(Top 50%)4444(Top 39%)4444(Top 368%)
25.2M25.20 mi0.35 mi19540+917518+487518+4812049(Top 45%)3787(Top 33%)3787(Top 314%)
Finish26.22 mi1.02 mi19386+1547428+907428+9013440(Top 50%)4444(Top 39%)4444(Top 368%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

21751

Females

8645

F50-54

8645

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

20528

Females

7994

F50-54

7994

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

21751

Females

8645

F50-54

8645

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

20060

Females

7707

F50-54

7707

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

20322

Females

7857

F50-54

7857

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

20999

Females

8265

F50-54

8265

25K→30K

15.5 - 18.6 mi

Top 73%
×9stories
+181ft-148ft

Overall

19427

Females

7431

F50-54

7431

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21181

Females

8504

F50-54

8504

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19654

Females

7735

F50-54

7735

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

17552

Females

6594

F50-54

6594

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

16283

Females

5910

F50-54

5910

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

14923

Females

5200

F50-54

5200

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13408

Females

4444

F50-54

4444

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12049

Females

3787

F50-54

3787

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

13440

Females

4444

F50-54

4444

Passing Analysis

Category:
Athletes Passed
1770
Passed By
2334
Net Change
-564
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18822
5K → 10K81979-898#18822#19720
10K → 15K34805-771#19720#20491
15K → 20K202109+93#20491#20398
20K → Half3024+6#20398#20392
Half → 25K67184-117#20392#20509
25K → 30K26354+209#20509#20300
30K → 20M55131-76#20300#20376
20M → 21M10135+66#20376#20310
21M → 35K881+87#20310#20223
35K → 23M2247+217#20223#20006
23M → 24M1872+185#20006#19821
24M → 40K1911+190#19821#19631
40K → 25.2M910+91#19631#19540
25.2M → Finish1562+154#19540#19386
TOTALS17702334-564
📊

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