Boston Marathon logo
BOSTON MARATHON 2023

Polniwati Salim

Bib: 21826•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 48%
Masters (Masters Women)
#0 / 6539
Top 37%
Division (F45-49)
#0 / 1817
Top 44%
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
8:32/mi
26:31
↑ 97↓ 3451.5%
10K· 6.21 mi
8:26/mi
52:42
↑ 79↓ 1380.4%
15K· 9.32 mi
8:35/mi
1:19:23
↑ 67↓ 78
20K· 12.43 mi
8:35/mi
1:46:02
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:51:48
↑ 19↓ 370.5%
25K· 15.53 mi
8:32/mi
2:12:30
↑ 66↓ 880.2%
30K· 18.64 mi
8:44/mi
2:39:37
↑ 181↓ 1480.2%
20M
8:41/mi
2:51:25
↑ 64↓ 500.2%
21M
9:10/mi
3:00:35
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
3:06:49
↑ 17↓ 861.7%
23M
8:34/mi
3:17:33
↑ 23↓ 630.6%
24M
8:11/mi
3:25:44
↓ 821.3%
40K· 24.85 mi
8:23/mi
3:32:54
↓ 200.3%
25.2M
8:51/mi
3:35:57
↑ 13↓ 160.2%
Finish· 26.22 mi
8:02/mi
3:44:08
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:51:48
Pace8:32 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:52:20
Pace8:34 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5526:318:3226:31
8:32
-
10K
6.21 mi11:45:0652:428:2926:11
8:26
-0:06
15K
9.32 mi12:11:471:19:238:3126:41
8:35
+0:09
20K
12.43 mi12:38:261:46:028:3226:39
8:35
0:00
Half
13.11 mi12:44:121:51:488:325:46
8:27
-0:08
25K
15.53 mi13:04:542:12:308:3220:42
8:32
+0:05
30K
18.64 mi13:32:012:39:378:3427:07
8:44
+0:12
20M
20.00 mi13:43:492:51:258:3411:48
8:41
-0:03
21M
21.00 mi13:52:593:00:358:369:10
9:10
+0:29
35K
21.75 mi13:59:133:06:498:356:14
8:20
-0:50
23M
23.00 mi14:09:573:17:338:3510:44
8:34
+0:14
24M
24.00 mi14:18:083:25:448:348:11
8:11
-0:23
40K
24.85 mi14:25:183:32:548:347:10
8:23
+0:12
25.2M
25.20 mi14:28:213:35:578:343:03
8:51
+0:28
Finish
26.22 mi14:36:323:44:088:338:11
8:02
-0:49

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

8:02 /mi

Average Pace

8:33 /mi

Slowest Pace

9:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:31:55

95% of race

Time at Steady Pace

12:13

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:33 /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 mi11:18:5526:318:3226:31
8:32
#17798
10K
6.21 mi11:45:0652:428:2926:11
8:26
#17793
15K
9.32 mi12:11:471:19:238:3126:41
8:35
#17951
20K
12.43 mi12:38:261:46:028:3226:39
8:35
#17768
Half
13.11 mi12:44:121:51:488:325:46
8:27
#17733
25K
15.53 mi13:04:542:12:308:3220:42
8:32
#17507
30K
18.64 mi13:32:012:39:378:3427:07
8:44
#17135
20M
20.00 mi13:43:492:51:258:3411:48
8:41
#16949
21M
21.00 mi13:52:593:00:358:369:10
9:10
#16791
35K
21.75 mi13:59:133:06:498:356:14
8:20
#16707
23M
23.00 mi14:09:573:17:338:3510:44
8:34
#16519
24M
24.00 mi14:18:083:25:448:348:11
8:11
#16327
40K
24.85 mi14:25:183:32:548:347:10
8:23
#16165
25.2M
25.20 mi14:28:213:35:578:343:03
8:51
#16099
Finish
26.22 mi14:36:323:44:088:338:11
8:02
#15958
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi177986420642018365(Top 69%)6709(Top 59%)6709(Top 369%)
10K6.21 mi3.10 mi17793+56397+236397+2317778(Top 67%)6355(Top 56%)6355(Top 350%)
15K9.32 mi3.11 mi17951-1586493-966493-9618365(Top 69%)6709(Top 59%)6709(Top 369%)
20K12.43 mi3.11 mi17768+1836381+1126381+11217341(Top 65%)6128(Top 54%)6128(Top 337%)
Half13.11 mi0.68 mi17733+356366+156366+1517473(Top 66%)6156(Top 54%)6156(Top 339%)
25K15.53 mi2.42 mi17507+2266239+1276239+12716423(Top 62%)5678(Top 50%)5678(Top 312%)
30K18.64 mi3.11 mi17135+3726040+1996040+19915670(Top 59%)5314(Top 47%)5314(Top 292%)
20M20.00 mi1.36 mi16949+1865940+1005940+10014778(Top 56%)4878(Top 43%)4878(Top 268%)
21M21.00 mi1.00 mi16791+1585863+775863+7714341(Top 54%)4689(Top 41%)4689(Top 258%)
35K21.75 mi0.75 mi16707+845824+395824+3914343(Top 54%)4760(Top 42%)4760(Top 262%)
23M23.00 mi1.25 mi16519+1885741+835741+8313689(Top 51%)4447(Top 39%)4447(Top 245%)
24M24.00 mi1.00 mi16327+1925641+1005641+10012532(Top 47%)3887(Top 34%)3887(Top 214%)
40K24.85 mi0.85 mi16165+1625568+735568+7312648(Top 48%)4040(Top 35%)4040(Top 222%)
25.2M25.20 mi0.35 mi16099+665529+395529+3911727(Top 44%)3623(Top 32%)3623(Top 199%)
Finish26.22 mi1.02 mi15958+1415467+625467+6212377(Top 46%)3908(Top 34%)3908(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

18365

Females

6709

F45-49

6709

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17778

Females

6355

F45-49

6355

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

18365

Females

6709

F45-49

6709

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

17341

Females

6128

F45-49

6128

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

17473

Females

6156

F45-49

6156

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

16423

Females

5678

F45-49

5678

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

15670

Females

5314

F45-49

5314

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

14778

Females

4878

F45-49

4878

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14341

Females

4689

F45-49

4689

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14343

Females

4760

F45-49

4760

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13689

Females

4447

F45-49

4447

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12532

Females

3887

F45-49

3887

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12648

Females

4040

F45-49

4040

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11727

Females

3623

F45-49

3623

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

12377

Females

3908

F45-49

3908

Passing Analysis

Category:
Athletes Passed
2662
Passed By
822
Net Change
+1840
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17798
5K → 10K314309+5#17798#17793
10K → 15K132290-158#17793#17951
15K → 20K26178+183#17951#17768
20K → Half5116+35#17768#17733
Half → 25K25731+226#17733#17507
25K → 30K40028+372#17507#17135
30K → 20M1926+186#17135#16949
20M → 21M17618+158#16949#16791
21M → 35K917+84#16791#16707
35K → 23M19911+188#16707#16519
23M → 24M1986+192#16519#16327
24M → 40K1675+162#16327#16165
40K → 25.2M682+66#16165#16099
25.2M → Finish15615+141#16099#15958
TOTALS2662822+1840
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing