Boston Marathon logo
BOSTON MARATHON 2023

Madalyn Borek

Bib: 26559•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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:45/mi
33:24
↑ 97↓ 3451.5%
10K· 6.21 mi
11:11/mi
1:08:10
↑ 79↓ 1380.4%
15K· 9.32 mi
11:03/mi
1:42:29
↑ 67↓ 78
20K· 12.43 mi
11:46/mi
2:19:01
↑ 106↓ 860.1%
Half· 13.11 mi
11:46/mi
2:27:03
↑ 19↓ 370.5%
25K· 15.53 mi
12:10/mi
2:56:33
↑ 66↓ 880.2%
30K· 18.64 mi
13:32/mi
3:38:37
↑ 181↓ 1480.2%
20M
11:59/mi
3:54:54
↑ 64↓ 500.2%
21M
12:53/mi
4:07:47
↑ 106↓ 241.6%
35K· 21.75 mi
12:02/mi
4:16:47
↑ 17↓ 861.7%
23M
13:07/mi
4:33:12
↑ 23↓ 630.6%
24M
12:05/mi
4:45:17
↓ 821.3%
40K· 24.85 mi
11:55/mi
4:55:28
↓ 200.3%
25.2M
13:06/mi
4:59:59
↑ 13↓ 160.2%
Finish· 26.22 mi
11:23/mi
5:11:35
↑ 22↓ 21

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
Time2:27:03
Pace11:13 /mi
2nd Half
Distance13.11 mi
Time2:44:32
Pace12:33 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:0233:2410:4533:24
10:45
-
10K
6.21 mi12:29:481:08:1010:5834:46
11:11
+0:26
15K
9.32 mi13:04:071:42:2911:0034:19
11:03
-0:08
20K
12.43 mi13:40:392:19:0111:1136:32
11:46
+0:43
Half
13.11 mi13:48:412:27:0311:138:02
11:46
0:00
25K
15.53 mi14:18:112:56:3311:2229:30
12:10
+0:24
30K
18.64 mi15:00:153:38:3711:4442:04
13:32
+1:22
20M
20.00 mi15:16:323:54:5411:4516:17
11:59
-1:33
21M
21.00 mi15:29:254:07:4711:4812:53
12:53
+0:54
35K
21.75 mi15:38:254:16:4711:489:00
12:02
-0:51
23M
23.00 mi15:54:504:33:1211:5316:25
13:07
+1:05
24M
24.00 mi16:06:554:45:1711:5312:05
12:05
-1:02
40K
24.85 mi16:17:064:55:2811:5310:11
11:55
-0:10
25.2M
25.20 mi16:21:374:59:5911:544:31
13:06
+1:11
Finish
26.22 mi16:33:135:11:3511:5411:36
11:23
-1:43

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

10:45 /mi

Average Pace

11:54 /mi

Slowest Pace

13:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:05

37% of race

Time at Steady Pace

2:01:37

39% of race

Time at Slower Pace

1:15:53

24% of race

Average Pace: 11:53 /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 mi11:55:0233:2410:4533:24
10:45
#25287
10K
6.21 mi12:29:481:08:1010:5834:46
11:11
#25546
15K
9.32 mi13:04:071:42:2911:0034:19
11:03
#25435
20K
12.43 mi13:40:392:19:0111:1136:32
11:46
#25463
Half
13.11 mi13:48:412:27:0311:138:02
11:46
#25476
25K
15.53 mi14:18:112:56:3311:2229:30
12:10
#25466
30K
18.64 mi15:00:153:38:3711:4442:04
13:32
#25569
20M
20.00 mi15:16:323:54:5411:4516:17
11:59
#25482
21M
21.00 mi15:29:254:07:4711:4812:53
12:53
#25415
35K
21.75 mi15:38:254:16:4711:489:00
12:02
#25396
23M
23.00 mi15:54:504:33:1211:5316:25
13:07
#25404
24M
24.00 mi16:06:554:45:1711:5312:05
12:05
#25379
40K
24.85 mi16:17:064:55:2811:5310:11
11:55
#25329
25.2M
25.20 mi16:21:374:59:5911:544:31
13:06
#25317
Finish
26.22 mi16:33:135:11:3511:5411:36
11:23
#25303
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25287106031060325258(Top 95%)10606(Top 93%)10606(Top 217%)
10K6.21 mi3.10 mi25546-25910766-16310766-16325673(Top 96%)10836(Top 95%)10836(Top 222%)
15K9.32 mi3.11 mi25435+11110694+7210694+7225258(Top 95%)10606(Top 93%)10606(Top 217%)
20K12.43 mi3.11 mi25463-2810727-3310727-3325487(Top 96%)10768(Top 94%)10768(Top 220%)
Half13.11 mi0.68 mi25476-1310732-510732-525707(Top 97%)10904(Top 95%)10904(Top 223%)
25K15.53 mi2.42 mi25466+1010743-1110743-1125290(Top 95%)10682(Top 94%)10682(Top 219%)
30K18.64 mi3.11 mi25569-10310809-6610809-6625777(Top 97%)10990(Top 96%)10990(Top 225%)
20M20.00 mi1.36 mi25482+8710770+3910770+3924200(Top 91%)10185(Top 89%)10185(Top 209%)
21M21.00 mi1.00 mi25415+6710740+3010740+3023963(Top 90%)10068(Top 88%)10068(Top 206%)
35K21.75 mi0.75 mi25396+1910736+410736+424719(Top 93%)10516(Top 92%)10516(Top 215%)
23M23.00 mi1.25 mi25404-810739-310739-325208(Top 95%)10748(Top 94%)10748(Top 220%)
24M24.00 mi1.00 mi25379+2510728+1110728+1124634(Top 93%)10502(Top 92%)10502(Top 215%)
40K24.85 mi0.85 mi25329+5010709+1910709+1923792(Top 89%)10084(Top 88%)10084(Top 206%)
25.2M25.20 mi0.35 mi25317+1210702+710702+724105(Top 91%)10244(Top 90%)10244(Top 210%)
Finish26.22 mi1.02 mi25303+1410696+610696+624542(Top 92%)10432(Top 91%)10432(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

25258

Females

10606

F18-39

10606

5K→10K

3.1 - 6.2 mi

Top 96%
×5story building
+79ft-138ft

Overall

25673

Females

10836

F18-39

10836

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

25258

Females

10606

F18-39

10606

15K→20K

9.3 - 12.4 mi

Top 96%
×5story building
+106ft-86ft

Overall

25487

Females

10768

F18-39

10768

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

25707

Females

10904

F18-39

10904

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

25290

Females

10682

F18-39

10682

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

25777

Females

10990

F18-39

10990

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

24200

Females

10185

F18-39

10185

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

23963

Females

10068

F18-39

10068

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

24719

Females

10516

F18-39

10516

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

25208

Females

10748

F18-39

10748

23M→24M

23.0 - 24.0 mi

Top 93%
×6story building
+12ft-82ft

Overall

24634

Females

10502

F18-39

10502

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23792

Females

10084

F18-39

10084

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24105

Females

10244

F18-39

10244

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24542

Females

10432

F18-39

10432

Passing Analysis

Category:
Athletes Passed
742
Passed By
758
Net Change
-16
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25287
5K → 10K58317-259#25287#25546
10K → 15K16554+111#25546#25435
15K → 20K74102-28#25435#25463
20K → Half922-13#25463#25476
Half → 25K6050+10#25476#25466
25K → 30K37140-103#25466#25569
30K → 20M925+87#25569#25482
20M → 21M725+67#25482#25415
21M → 35K2910+19#25415#25396
35K → 23M2533-8#25396#25404
23M → 24M327+25#25404#25379
24M → 40K511+50#25379#25329
40K → 25.2M153+12#25329#25317
25.2M → Finish239+14#25317#25303
TOTALS742758-16
📊

Passing Visuals

Category:
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