Boston Marathon logo
BOSTON MARATHON 2023

Bailey D'antonio

Bib: 17337•F

ME

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 42%
Gender (Female)
#0 / 11423
Top 23%
Division (F18-39)
#0 / 4884
Top 39%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:38
Rank: #10611
Start → 5K
23:38 | 7:36/mi
10K· 6.21 mi
47:06
Rank: #10753 (-142)
5K → 10K
23:28 | 7:33/mi
15K· 9.32 mi
1:10:44
Rank: #10834 (-81)
10K → 15K
23:38 | 7:36/mi
20K· 12.43 mi
1:34:44
Rank: #10909 (-75)
15K → 20K
24:00 | 7:43/mi
Half· 13.11 mi
1:39:46
Rank: #10818 (+91)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:59:00
Rank: #10988 (-170)
Half → 25K
19:14 | 7:56/mi
30K· 18.64 mi
2:24:09
Rank: #11026 (-38)
25K → 30K
25:09 | 8:06/mi
20M
2:35:13
Rank: #11030 (-4)
30K → 20M
11:04 | 8:09/mi
21M
2:44:15
Rank: #11179 (-149)
20M → 21M
9:02 | 9:02/mi
35K· 21.75 mi
2:50:15
Rank: #11215 (-36)
21M → 35K
6:00 | 8:01/mi
23M
3:00:37
Rank: #11233 (-18)
35K → 23M
10:22 | 8:17/mi
24M
3:08:34
Rank: #11213 (+20)
23M → 24M
7:57 | 7:57/mi
40K· 24.85 mi
3:15:37
Rank: #11217 (-4)
24M → 40K
7:03 | 8:15/mi
25.2M
3:18:37
Rank: #11187 (+30)
40K → 25.2M
3:00 | 8:42/mi
Finish· 26.22 mi
3:26:35
Rank: #11152 (+35)
25.2M → Finish
7:58 | 7:49/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
Time1:39:46
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:46:49
Pace8:09 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2223:387:3623:38
7:36
-
10K
6.21 mi11:37:5047:067:3523:28
7:33
-0:03
15K
9.32 mi12:01:281:10:447:3523:38
7:36
+0:03
20K
12.43 mi12:25:281:34:447:3724:00
7:43
+0:07
Half
13.11 mi12:30:301:39:467:375:02
7:23
-0:20
25K
15.53 mi12:49:441:59:007:4019:14
7:56
+0:33
30K
18.64 mi13:14:532:24:097:4425:09
8:06
+0:10
20M
20.00 mi13:25:572:35:137:4611:04
8:09
+0:03
21M
21.00 mi13:34:592:44:157:499:02
9:02
+0:53
35K
21.75 mi13:40:592:50:157:506:00
8:01
-1:01
23M
23.00 mi13:51:213:00:377:5110:22
8:17
+0:16
24M
24.00 mi13:59:183:08:347:517:57
7:57
-0:20
40K
24.85 mi14:06:213:15:377:527:03
8:15
+0:18
25.2M
25.20 mi14:09:213:18:377:533:00
8:42
+0:27
Finish
26.22 mi14:17:193:26:357:537:58
7:49
-0:53

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

7:23 /mi

Average Pace

7:53 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:46

48% of race

Time at Steady Pace

1:17:22

37% of race

Time at Slower Pace

29:27

14% of race

Average Pace: 7:53 /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 mi11:14:2223:387:3623:38
7:36
#10611
10K
6.21 mi11:37:5047:067:3523:28
7:33
#10753
15K
9.32 mi12:01:281:10:447:3523:38
7:36
#10834
20K
12.43 mi12:25:281:34:447:3724:00
7:43
#10909
Half
13.11 mi12:30:301:39:467:375:02
7:23
#10818
25K
15.53 mi12:49:441:59:007:4019:14
7:56
#10988
30K
18.64 mi13:14:532:24:097:4425:09
8:06
#11026
20M
20.00 mi13:25:572:35:137:4611:04
8:09
#11030
21M
21.00 mi13:34:592:44:157:499:02
9:02
#11179
35K
21.75 mi13:40:592:50:157:506:00
8:01
#11215
23M
23.00 mi13:51:213:00:377:5110:22
8:17
#11233
24M
24.00 mi13:59:183:08:347:517:57
7:57
#11213
40K
24.85 mi14:06:213:15:377:527:03
8:15
#11217
25.2M
25.20 mi14:09:213:18:377:533:00
8:42
#11187
Finish
26.22 mi14:17:193:26:357:537:58
7:49
#11152
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi106112144214411093(Top 42%)2404(Top 21%)2404(Top 49%)
10K6.21 mi3.10 mi10753-1422204-602204-6010923(Top 41%)2275(Top 20%)2275(Top 47%)
15K9.32 mi3.11 mi10834-812254-502254-5011093(Top 42%)2404(Top 21%)2404(Top 49%)
20K12.43 mi3.11 mi10909-752291-372291-3711119(Top 42%)2468(Top 22%)2468(Top 51%)
Half13.11 mi0.68 mi10818+912254+372254+379336(Top 35%)1628(Top 14%)1628(Top 33%)
25K15.53 mi2.42 mi10988-1702346-922346-9212169(Top 46%)3171(Top 28%)3171(Top 65%)
30K18.64 mi3.11 mi11026-382416-702416-7011602(Top 44%)2958(Top 26%)2958(Top 61%)
20M20.00 mi1.36 mi11030-42454-382454-3811318(Top 43%)2892(Top 25%)2892(Top 59%)
21M21.00 mi1.00 mi11179-1492552-982552-9813605(Top 51%)4261(Top 37%)4261(Top 87%)
35K21.75 mi0.75 mi11215-362585-332585-3312283(Top 46%)3574(Top 31%)3574(Top 73%)
23M23.00 mi1.25 mi11233-182620-352620-3511755(Top 44%)3377(Top 30%)3377(Top 69%)
24M24.00 mi1.00 mi11213+202630-102630-1010906(Top 41%)3037(Top 27%)3037(Top 62%)
40K24.85 mi0.85 mi11217-42666-362666-3611683(Top 44%)3495(Top 31%)3495(Top 72%)
25.2M25.20 mi0.35 mi11187+302661+52661+510803(Top 41%)3077(Top 27%)3077(Top 63%)
Finish26.22 mi1.02 mi11152+352663-22663-210822(Top 41%)3096(Top 27%)3096(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11093

Females

2404

F18-39

2404

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10923

Females

2275

F18-39

2275

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11093

Females

2404

F18-39

2404

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11119

Females

2468

F18-39

2468

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9336

Females

1628

F18-39

1628

Half→25K

13.1 - 15.5 mi

Top 46%
×4stories
+66ft-88ft

Overall

12169

Females

3171

F18-39

3171

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11602

Females

2958

F18-39

2958

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11318

Females

2892

F18-39

2892

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

13605

Females

4261

F18-39

4261

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12283

Females

3574

F18-39

3574

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11755

Females

3377

F18-39

3377

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

10906

Females

3037

F18-39

3037

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11683

Females

3495

F18-39

3495

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10803

Females

3077

F18-39

3077

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10822

Females

3096

F18-39

3096

Passing Analysis

Category:
Athletes Passed
1390*
Passed By
1931
Net Change
-541
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10611
5K → 10K228370-142#10611#10753
10K → 15K152233-81#10753#10834
15K → 20K134209-75#10834#10909
20K → Half943+91#10909#10818
Half → 25K82252-170#10818#10988
25K → 30K167205-38#10988#11026
30K → 20M96*100-4#11026#11030
20M → 21M43192-149#11030#11179
21M → 35K3369-36#11179#11215
35K → 23M84102-18#11215#11233
23M → 24M7959+20#11233#11213
24M → 40K6266-4#11213#11217
40K → 25.2M4616+30#11217#11187
25.2M → Finish9055+35#11187#11152
TOTALS1390*1931-541

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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