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BOSTON MARATHON 2023

Courtney Kwon

Bib: 19932•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 45%
Masters (Masters Women)
#0 / 6539
Top 34%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:34
Rank: #17915
Start → 5K
26:34 | 8:33/mi
10K· 6.21 mi
52:27
Rank: #17481 (+434)
5K → 10K
25:53 | 8:20/mi
15K· 9.32 mi
1:18:20
Rank: #17223 (+258)
10K → 15K
25:53 | 8:20/mi
20K· 12.43 mi
1:44:57
Rank: #17222 (+1)
15K → 20K
26:37 | 8:34/mi
Half· 13.11 mi
1:50:45
Rank: #17245 (-23)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:11:31
Rank: #17129 (+116)
Half → 25K
20:46 | 8:34/mi
30K· 18.64 mi
2:38:15
Rank: #16710 (+419)
25K → 30K
26:44 | 8:36/mi
20M
2:49:29
Rank: #16368 (+342)
30K → 20M
11:14 | 8:16/mi
21M
2:58:31
Rank: #16202 (+166)
20M → 21M
9:02 | 9:02/mi
35K· 21.75 mi
3:04:37
Rank: #16063 (+139)
21M → 35K
6:06 | 8:09/mi
23M
3:15:00
Rank: #15787 (+276)
35K → 23M
10:23 | 8:18/mi
24M
3:23:13
Rank: #15651 (+136)
23M → 24M
8:13 | 8:13/mi
40K· 24.85 mi
3:30:22
Rank: #15538 (+113)
24M → 40K
7:09 | 8:22/mi
25.2M
3:33:35
Rank: #15529 (+9)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:42:03
Rank: #15458 (+71)
25.2M → Finish
8:28 | 8:19/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:50:45
Pace8:27 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:51:18
Pace8:29 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4826:348:3326:34
8:33
-
10K
6.21 mi11:44:4152:278:2625:53
8:20
-0:13
15K
9.32 mi12:10:341:18:208:2425:53
8:20
0:00
20K
12.43 mi12:37:111:44:578:2726:37
8:34
+0:14
Half
13.11 mi12:42:591:50:458:275:48
8:30
-0:04
25K
15.53 mi13:03:452:11:318:2820:46
8:34
+0:04
30K
18.64 mi13:30:292:38:158:2926:44
8:36
+0:02
20M
20.00 mi13:41:432:49:298:2811:14
8:16
-0:20
21M
21.00 mi13:50:452:58:318:309:02
9:02
+0:46
35K
21.75 mi13:56:513:04:378:296:06
8:09
-0:53
23M
23.00 mi14:07:143:15:008:2910:23
8:18
+0:09
24M
24.00 mi14:15:273:23:138:288:13
8:13
-0:05
40K
24.85 mi14:22:363:30:228:287:09
8:22
+0:09
25.2M
25.20 mi14:25:493:33:358:293:13
9:20
+0:58
Finish
26.22 mi14:34:173:42:038:298:28
8:19
-1:01

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

8:09 /mi

Average Pace

8:29 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:48

94% of race

Time at Steady Pace

12:15

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:28 /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 mi11:18:4826:348:3326:34
8:33
#17915
10K
6.21 mi11:44:4152:278:2625:53
8:20
#17481
15K
9.32 mi12:10:341:18:208:2425:53
8:20
#17223
20K
12.43 mi12:37:111:44:578:2726:37
8:34
#17222
Half
13.11 mi12:42:591:50:458:275:48
8:30
#17245
25K
15.53 mi13:03:452:11:318:2820:46
8:34
#17129
30K
18.64 mi13:30:292:38:158:2926:44
8:36
#16710
20M
20.00 mi13:41:432:49:298:2811:14
8:16
#16368
21M
21.00 mi13:50:452:58:318:309:02
9:02
#16202
35K
21.75 mi13:56:513:04:378:296:06
8:09
#16063
23M
23.00 mi14:07:143:15:008:2910:23
8:18
#15787
24M
24.00 mi14:15:273:23:138:288:13
8:13
#15651
40K
24.85 mi14:22:363:30:228:287:09
8:22
#15538
25.2M
25.20 mi14:25:493:33:358:293:13
9:20
#15529
Finish
26.22 mi14:34:173:42:038:298:28
8:19
#15458
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi179156493649316740(Top 63%)5752(Top 50%)5752(Top 306%)
10K6.21 mi3.10 mi17481+4346214+2796214+27917133(Top 64%)5952(Top 52%)5952(Top 317%)
15K9.32 mi3.11 mi17223+2586045+1696045+16916740(Top 63%)5752(Top 50%)5752(Top 306%)
20K12.43 mi3.11 mi17222+16060-156060-1517278(Top 65%)6089(Top 53%)6089(Top 324%)
Half13.11 mi0.68 mi17245-236075-156075-1517720(Top 67%)6298(Top 55%)6298(Top 335%)
25K15.53 mi2.42 mi17129+1166018+576018+5716593(Top 62%)5767(Top 50%)5767(Top 307%)
30K18.64 mi3.11 mi16710+4195804+2145804+21414960(Top 56%)4902(Top 43%)4902(Top 261%)
20M20.00 mi1.36 mi16368+3425626+1785626+17812179(Top 46%)3387(Top 30%)3387(Top 180%)
21M21.00 mi1.00 mi16202+1665542+845542+8413633(Top 51%)4289(Top 38%)4289(Top 228%)
35K21.75 mi0.75 mi16063+1395474+685474+6813212(Top 50%)4133(Top 36%)4133(Top 220%)
23M23.00 mi1.25 mi15787+2765333+1415333+14111884(Top 45%)3462(Top 30%)3462(Top 184%)
24M24.00 mi1.00 mi15651+1365270+635270+6312770(Top 48%)4010(Top 35%)4010(Top 214%)
40K24.85 mi0.85 mi15538+1135212+585212+5812522(Top 47%)3963(Top 35%)3963(Top 211%)
25.2M25.20 mi0.35 mi15529+95211+15211+114391(Top 54%)4961(Top 43%)4961(Top 264%)
Finish26.22 mi1.02 mi15458+715183+285183+2814187(Top 53%)4848(Top 42%)4848(Top 258%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

16740

Females

5752

F40-44

5752

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

17133

Females

5952

F40-44

5952

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

16740

Females

5752

F40-44

5752

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

17278

Females

6089

F40-44

6089

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

17720

Females

6298

F40-44

6298

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16593

Females

5767

F40-44

5767

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

14960

Females

4902

F40-44

4902

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12179

Females

3387

F40-44

3387

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

13633

Females

4289

F40-44

4289

21M→35K

21.0 - 21.8 mi

Top 50%
×7stories
+17ft-86ft

Overall

13212

Females

4133

F40-44

4133

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

11884

Females

3462

F40-44

3462

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12770

Females

4010

F40-44

4010

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12522

Females

3963

F40-44

3963

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14391

Females

4961

F40-44

4961

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14187

Females

4848

F40-44

4848

Passing Analysis

Category:
Athletes Passed
3110
Passed By
653
Net Change
+2457
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17915
5K → 10K596162+434#17915#17481
10K → 15K34688+258#17481#17223
15K → 20K173172+1#17223#17222
20K → Half2346-23#17222#17245
Half → 25K17963+116#17245#17129
25K → 30K43112+419#17129#16710
30K → 20M3420+342#16710#16368
20M → 21M17913+166#16368#16202
21M → 35K1423+139#16202#16063
35K → 23M2793+276#16063#15787
23M → 24M15216+136#15787#15651
24M → 40K12411+113#15651#15538
40K → 25.2M3526+9#15538#15529
25.2M → Finish10938+71#15529#15458
TOTALS3110653+2457
📊

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