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BOSTON MARATHON 2023

Julie Basiliadis

Bib: 10745•F

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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 20%
Division (F18-39)
#0 / 4884
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:31
Rank: #10264
Start → 5K
23:31 | 7:34/mi
10K· 6.21 mi
46:58
Rank: #10558 (-294)
5K → 10K
23:27 | 7:33/mi
15K· 9.32 mi
1:10:19
Rank: #10449 (+109)
10K → 15K
23:21 | 7:31/mi
20K· 12.43 mi
1:33:53
Rank: #10308 (+141)
15K → 20K
23:34 | 7:35/mi
Half· 13.11 mi
1:39:03
Rank: #10328 (-20)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:57:22
Rank: #10099 (+229)
Half → 25K
18:19 | 7:33/mi
30K· 18.64 mi
2:22:05
Rank: #10151 (-52)
25K → 30K
24:43 | 7:57/mi
20M
2:33:12
Rank: #10242 (-91)
30K → 20M
11:07 | 8:11/mi
21M
2:42:03
Rank: #10362 (-120)
20M → 21M
8:51 | 8:51/mi
35K· 21.75 mi
2:48:07
Rank: #10431 (-69)
21M → 35K
6:04 | 8:07/mi
23M
2:58:19
Rank: #10421 (+10)
35K → 23M
10:12 | 8:09/mi
24M
3:06:33
Rank: #10524 (-103)
23M → 24M
8:14 | 8:14/mi
40K· 24.85 mi
3:13:39
Rank: #10559 (-35)
24M → 40K
7:06 | 8:18/mi
25.2M
3:16:36
Rank: #10532 (+27)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:24:25
Rank: #10484 (+48)
25.2M → Finish
7:49 | 7:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:03
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:45:22
Pace8:02 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:3923:317:3423:31
7:34
-
10K
6.21 mi11:13:0646:587:3423:27
7:33
-0:01
15K
9.32 mi11:36:271:10:197:3323:21
7:31
-0:02
20K
12.43 mi12:00:011:33:537:3323:34
7:35
+0:04
Half
13.11 mi12:05:111:39:037:335:10
7:34
-0:01
25K
15.53 mi12:23:301:57:227:3318:19
7:33
-0:01
30K
18.64 mi12:48:132:22:057:3724:43
7:57
+0:24
20M
20.00 mi12:59:202:33:127:4011:07
8:11
+0:14
21M
21.00 mi13:08:112:42:037:438:51
8:51
+0:40
35K
21.75 mi13:14:152:48:077:446:04
8:07
-0:44
23M
23.00 mi13:24:272:58:197:4510:12
8:09
+0:02
24M
24.00 mi13:32:413:06:337:468:14
8:14
+0:05
40K
24.85 mi13:39:473:13:397:477:06
8:18
+0:04
25.2M
25.20 mi13:42:443:16:367:482:57
8:33
+0:15
Finish
26.22 mi13:50:333:24:257:487:49
7:40
-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

7:31 /mi

Average Pace

7:48 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:31

91% of race

Time at Steady Pace

18:54

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:48 /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 mi10:49:3923:317:3423:31
7:34
#10264
10K
6.21 mi11:13:0646:587:3423:27
7:33
#10558
15K
9.32 mi11:36:271:10:197:3323:21
7:31
#10449
20K
12.43 mi12:00:011:33:537:3323:34
7:35
#10308
Half
13.11 mi12:05:111:39:037:335:10
7:34
#10328
25K
15.53 mi12:23:301:57:227:3318:19
7:33
#10099
30K
18.64 mi12:48:132:22:057:3724:43
7:57
#10151
20M
20.00 mi12:59:202:33:127:4011:07
8:11
#10242
21M
21.00 mi13:08:112:42:037:438:51
8:51
#10362
35K
21.75 mi13:14:152:48:077:446:04
8:07
#10431
23M
23.00 mi13:24:272:58:197:4510:12
8:09
#10421
24M
24.00 mi13:32:413:06:337:468:14
8:14
#10524
40K
24.85 mi13:39:473:13:397:477:06
8:18
#10559
25.2M
25.20 mi13:42:443:16:367:482:57
8:33
#10532
Finish
26.22 mi13:50:333:24:257:487:49
7:40
#10484
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi102641984198410321(Top 39%)1993(Top 17%)1993(Top 41%)
10K6.21 mi3.10 mi10558-2942101-1172101-11710870(Top 41%)2244(Top 20%)2244(Top 46%)
15K9.32 mi3.11 mi10449+1092040+612040+6110321(Top 39%)1993(Top 17%)1993(Top 41%)
20K12.43 mi3.11 mi10308+1411979+611979+619993(Top 38%)1911(Top 17%)1911(Top 39%)
Half13.11 mi0.68 mi10328-201990-111990-1110872(Top 41%)2301(Top 20%)2301(Top 47%)
25K15.53 mi2.42 mi10099+2291903+871903+879223(Top 35%)1649(Top 14%)1649(Top 34%)
30K18.64 mi3.11 mi10151-521966-631966-6310547(Top 40%)2411(Top 21%)2411(Top 49%)
20M20.00 mi1.36 mi10242-912044-782044-7811567(Top 43%)3029(Top 27%)3029(Top 62%)
21M21.00 mi1.00 mi10362-1202130-862130-8612548(Top 47%)3702(Top 32%)3702(Top 76%)
35K21.75 mi0.75 mi10431-692187-572187-5712845(Top 48%)3898(Top 34%)3898(Top 80%)
23M23.00 mi1.25 mi10421+102208-212208-2110816(Top 41%)2918(Top 26%)2918(Top 60%)
24M24.00 mi1.00 mi10524-1032296-882296-8812832(Top 48%)4031(Top 35%)4031(Top 83%)
40K24.85 mi0.85 mi10559-352341-452341-4512073(Top 45%)3698(Top 32%)3698(Top 76%)
25.2M25.20 mi0.35 mi10532+272335+62335+69923(Top 37%)2639(Top 23%)2639(Top 54%)
Finish26.22 mi1.02 mi10484+482339-42339-49811(Top 37%)2616(Top 23%)2616(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10321

Females

1993

F18-39

1993

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10870

Females

2244

F18-39

2244

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10321

Females

1993

F18-39

1993

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

9993

Females

1911

F18-39

1911

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10872

Females

2301

F18-39

2301

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9223

Females

1649

F18-39

1649

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

10547

Females

2411

F18-39

2411

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11567

Females

3029

F18-39

3029

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

12548

Females

3702

F18-39

3702

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12845

Females

3898

F18-39

3898

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10816

Females

2918

F18-39

2918

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12832

Females

4031

F18-39

4031

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12073

Females

3698

F18-39

3698

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9923

Females

2639

F18-39

2639

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9811

Females

2616

F18-39

2616

Passing Analysis

Category:
Athletes Passed
1525*
Passed By
1745
Net Change
-220
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10264
5K → 10K163*457-294#10264#10558
10K → 15K261152+109#10558#10449
15K → 20K219*78+141#10449#10308
20K → Half1737-20#10308#10328
Half → 25K26132+229#10328#10099
25K → 30K144*196-52#10099#10151
30K → 20M51*142-91#10151#10242
20M → 21M56176-120#10242#10362
21M → 35K3099-69#10362#10431
35K → 23M8676+10#10431#10421
23M → 24M43146-103#10421#10524
24M → 40K5388-35#10524#10559
40K → 25.2M4316+27#10559#10532
25.2M → Finish9850+48#10532#10484
TOTALS1525*1745-220

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing