Boston Marathon logo
BOSTON MARATHON 2023

Julia Ordzowialy

Bib: 4966•F

IL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 10%
Gender (Female)
#0 / 11423
Top 1%
Masters (Masters Women)
#0 / 6539
Top 0.3%
Division (F40-44)
#0 / 1878
Top 0.9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:56
Rank: #3975
Start → 5K
20:56 | 6:44/mi
10K· 6.21 mi
41:51
Rank: #4337 (-362)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:02:36
Rank: #4180 (+157)
10K → 15K
20:45 | 6:41/mi
20K· 12.43 mi
1:23:15
Rank: #3860 (+320)
15K → 20K
20:39 | 6:39/mi
Half· 13.11 mi
1:27:42
Rank: #3785 (+75)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:43:44
Rank: #3583 (+202)
Half → 25K
16:02 | 6:37/mi
30K· 18.64 mi
2:04:20
Rank: #3202 (+381)
25K → 30K
20:36 | 6:38/mi
20M
2:13:34
Rank: #3142 (+60)
30K → 20M
9:14 | 6:48/mi
21M
2:20:22
Rank: #2985 (+157)
20M → 21M
6:48 | 6:48/mi
35K· 21.75 mi
2:25:08
Rank: #2908 (+77)
21M → 35K
4:46 | 6:22/mi
23M
2:33:33
Rank: #2829 (+79)
35K → 23M
8:25 | 6:43/mi
24M
2:40:03
Rank: #2761 (+68)
23M → 24M
6:30 | 6:30/mi
40K· 24.85 mi
2:45:44
Rank: #2703 (+58)
24M → 40K
5:41 | 6:39/mi
25.2M
2:48:17
Rank: #2712 (-9)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:55:13
Rank: #2750 (-38)
25.2M → Finish
6:56 | 6:48/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 Half⚖️ Balanced
Distance13.11 mi
Time1:27:42
Pace6:41 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:31
Pace6:41 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5420:566:4420:56
6:44
-
10K
6.21 mi10:44:4941:516:4420:56
6:44
0:00
15K
9.32 mi11:05:341:02:366:4320:45
6:41
-0:03
20K
12.43 mi11:26:131:23:156:4220:39
6:39
-0:02
Half
13.11 mi11:30:401:27:426:414:27
6:31
-0:08
25K
15.53 mi11:46:421:43:446:4116:02
6:37
+0:06
30K
18.64 mi12:07:182:04:206:4020:36
6:38
+0:01
20M
20.00 mi12:16:322:13:346:419:14
6:48
+0:10
21M
21.00 mi12:23:202:20:226:416:48
6:48
0:00
35K
21.75 mi12:28:062:25:086:404:46
6:22
-0:26
23M
23.00 mi12:36:312:33:336:418:25
6:43
+0:21
24M
24.00 mi12:43:012:40:036:406:30
6:30
-0:13
40K
24.85 mi12:48:422:45:446:405:41
6:39
+0:09
25.2M
25.20 mi12:51:152:48:176:412:33
7:24
+0:45
Finish
26.22 mi12:58:112:55:136:416:56
6:48
-0:36

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

6:22 /mi

Average Pace

6:41 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:40

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:41 /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 mi10:23:5420:566:4420:56
6:44
#3975
10K
6.21 mi10:44:4941:516:4420:56
6:44
#4337
15K
9.32 mi11:05:341:02:366:4320:45
6:41
#4180
20K
12.43 mi11:26:131:23:156:4220:39
6:39
#3860
Half
13.11 mi11:30:401:27:426:414:27
6:31
#3785
25K
15.53 mi11:46:421:43:446:4116:02
6:37
#3583
30K
18.64 mi12:07:182:04:206:4020:36
6:38
#3202
20M
20.00 mi12:16:322:13:346:419:14
6:48
#3142
21M
21.00 mi12:23:202:20:226:416:48
6:48
#2985
35K
21.75 mi12:28:062:25:086:404:46
6:22
#2908
23M
23.00 mi12:36:312:33:336:418:25
6:43
#2829
24M
24.00 mi12:43:012:40:036:406:30
6:30
#2761
40K
24.85 mi12:48:422:45:446:405:41
6:39
#2703
25.2M
25.20 mi12:51:152:48:176:412:33
7:24
#2712
Finish
26.22 mi12:58:112:55:136:416:56
6:48
#2750
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi39752422423945(Top 15%)233(Top 2%)233(Top 12%)
10K6.21 mi3.10 mi4337-362267-25267-254684(Top 18%)321(Top 3%)321(Top 17%)
15K9.32 mi3.11 mi4180+157253+14253+143945(Top 15%)233(Top 2%)233(Top 12%)
20K12.43 mi3.11 mi3860+320214+39214+393170(Top 12%)153(Top 1%)153(Top 8%)
Half13.11 mi0.68 mi3785+75205+9205+93003(Top 11%)129(Top 1%)129(Top 7%)
25K15.53 mi2.42 mi3583+202188+17188+172796(Top 11%)121(Top 1%)121(Top 6%)
30K18.64 mi3.11 mi3202+381152+36152+362106(Top 8%)93(Top 0.8%)93(Top 5%)
20M20.00 mi1.36 mi3142+60153-1153-12822(Top 11%)162(Top 1%)162(Top 9%)
21M21.00 mi1.00 mi2985+157139+14139+141378(Top 5%)64(Top 0.6%)64(Top 3%)
35K21.75 mi0.75 mi2908+77135+4135+41897(Top 7%)95(Top 0.8%)95(Top 5%)
23M23.00 mi1.25 mi2829+79132+3132+32293(Top 9%)131(Top 1%)131(Top 7%)
24M24.00 mi1.00 mi2761+68129+3129+32129(Top 8%)131(Top 1%)131(Top 7%)
40K24.85 mi0.85 mi2703+58124+5124+52140(Top 8%)140(Top 1%)140(Top 7%)
25.2M25.20 mi0.35 mi2712-9127-3127-33456(Top 13%)319(Top 3%)319(Top 17%)
Finish26.22 mi1.02 mi2750-38133-6133-64112(Top 15%)479(Top 4%)479(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3945

Females

233

F40-44

233

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4684

Females

321

F40-44

321

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3945

Females

233

F40-44

233

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3170

Females

153

F40-44

153

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3003

Females

129

F40-44

129

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

2796

Females

121

F40-44

121

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2106

Females

93

F40-44

93

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2822

Females

162

F40-44

162

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1378

Females

64

F40-44

64

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1897

Females

95

F40-44

95

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2293

Females

131

F40-44

131

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2129

Females

131

F40-44

131

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2140

Females

140

F40-44

140

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3456

Females

319

F40-44

319

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4112

Females

479

F40-44

479

Passing Analysis

Category:
Athletes Passed
1909
Passed By
684
Net Change
+1225
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3975
5K → 10K92454-362#3975#4337
10K → 15K21760+157#4337#4180
15K → 20K3288+320#4180#3860
20K → Half772+75#3860#3785
Half → 25K2086+202#3785#3583
25K → 30K3821+381#3583#3202
30K → 20M8323+60#3202#3142
20M → 21M1592+157#3142#2985
21M → 35K803+77#2985#2908
35K → 23M9516+79#2908#2829
23M → 24M8214+68#2829#2761
24M → 40K7012+58#2761#2703
40K → 25.2M1019-9#2703#2712
25.2M → Finish2664-38#2712#2750
TOTALS1909684+1225
📊

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