Boston Marathon logo
BOSTON MARATHON 2023

Hwa Choi

Bib: 20612•F

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F65-69)
#0 / 221
Top 41%
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
10:58/mi
34:05
↑ 97↓ 3451.5%
10K· 6.21 mi
9:59/mi
1:05:05
↑ 79↓ 1380.4%
15K· 9.32 mi
9:44/mi
1:35:18
↑ 67↓ 78
20K· 12.43 mi
9:50/mi
2:05:50
↑ 106↓ 860.1%
Half· 13.11 mi
9:37/mi
2:12:24
↑ 19↓ 370.5%
25K· 15.53 mi
9:56/mi
2:36:29
↑ 66↓ 880.2%
30K· 18.64 mi
10:18/mi
3:08:30
↑ 181↓ 1480.2%
20M
10:20/mi
3:22:32
↑ 64↓ 500.2%
21M
10:58/mi
3:33:30
↑ 106↓ 241.6%
35K· 21.75 mi
9:37/mi
3:40:42
↑ 17↓ 861.7%
23M
9:33/mi
3:52:40
↑ 23↓ 630.6%
24M
9:29/mi
4:02:09
↓ 821.3%
40K· 24.85 mi
9:19/mi
4:10:07
↓ 200.3%
25.2M
10:03/mi
4:13:35
↑ 13↓ 160.2%
Finish· 26.22 mi
9:01/mi
4:22:46
↑ 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
Distance13.11 mi
Time2:12:24
Pace10:06 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:10:22
Pace9:57 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3034:0510:5834:05
10:58
-
10K
6.21 mi12:21:301:05:0510:2831:00
9:59
-0:59
15K
9.32 mi12:51:431:35:1810:1330:13
9:44
-0:15
20K
12.43 mi13:22:152:05:5010:0830:32
9:50
+0:06
Half
13.11 mi13:28:492:12:2410:066:34
9:37
-0:13
25K
15.53 mi13:52:542:36:2910:0424:05
9:56
+0:19
30K
18.64 mi14:24:553:08:3010:0732:01
10:18
+0:22
20M
20.00 mi14:38:573:22:3210:0814:02
10:20
+0:02
21M
21.00 mi14:49:553:33:3010:1010:58
10:58
+0:38
35K
21.75 mi14:57:073:40:4210:097:12
9:37
-1:21
23M
23.00 mi15:09:053:52:4010:0711:58
9:33
-0:04
24M
24.00 mi15:18:344:02:0910:059:29
9:29
-0:04
40K
24.85 mi15:26:324:10:0710:047:58
9:19
-0:10
25.2M
25.20 mi15:30:004:13:3510:043:28
10:03
+0:44
Finish
26.22 mi15:39:114:22:4610:029:11
9:01
-1:02

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

9:01 /mi

Average Pace

10:02 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

38:36

15% of race

Time at Steady Pace

2:13:04

51% of race

Time at Slower Pace

1:31:06

35% of race

Average Pace: 10:01 /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 mi11:50:3034:0510:5834:05
10:58
#25640
10K
6.21 mi12:21:301:05:0510:2831:00
9:59
#24672
15K
9.32 mi12:51:431:35:1810:1330:13
9:44
#24065
20K
12.43 mi13:22:152:05:5010:0830:32
9:50
#23699
Half
13.11 mi13:28:492:12:2410:066:34
9:37
#23630
25K
15.53 mi13:52:542:36:2910:0424:05
9:56
#23374
30K
18.64 mi14:24:553:08:3010:0732:01
10:18
#23073
20M
20.00 mi14:38:573:22:3210:0814:02
10:20
#22919
21M
21.00 mi14:49:553:33:3010:1010:58
10:58
#22806
35K
21.75 mi14:57:073:40:4210:097:12
9:37
#22721
23M
23.00 mi15:09:053:52:4010:0711:58
9:33
#22513
24M
24.00 mi15:18:344:02:0910:059:29
9:29
#22405
40K
24.85 mi15:26:324:10:0710:047:58
9:19
#22263
25.2M
25.20 mi15:30:004:13:3510:043:28
10:03
#22209
Finish
26.22 mi15:39:114:22:4610:029:11
9:01
#22086
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi25640108121081222877(Top 86%)9274(Top 81%)9274(Top 4196%)
10K6.21 mi3.10 mi24672+96810248+56410248+56423641(Top 89%)9698(Top 85%)9698(Top 4388%)
15K9.32 mi3.11 mi24065+6079926+3229926+32222877(Top 86%)9274(Top 81%)9274(Top 4196%)
20K12.43 mi3.11 mi23699+3669720+2069720+20622472(Top 84%)9069(Top 79%)9069(Top 4104%)
Half13.11 mi0.68 mi23630+699684+369684+3622467(Top 84%)9052(Top 79%)9052(Top 4096%)
25K15.53 mi2.42 mi23374+2569551+1339551+13322074(Top 83%)8877(Top 78%)8877(Top 4017%)
30K18.64 mi3.11 mi23073+3019425+1269425+12621790(Top 82%)8787(Top 77%)8787(Top 3976%)
20M20.00 mi1.36 mi22919+1549354+719354+7121350(Top 80%)8612(Top 75%)8612(Top 3897%)
21M21.00 mi1.00 mi22806+1139306+489306+4820774(Top 78%)8343(Top 73%)8343(Top 3775%)
35K21.75 mi0.75 mi22721+859271+359271+3520259(Top 76%)8097(Top 71%)8097(Top 3664%)
23M23.00 mi1.25 mi22513+2089162+1099162+10918584(Top 70%)7183(Top 63%)7183(Top 3250%)
24M24.00 mi1.00 mi22405+1089108+549108+5419179(Top 72%)7555(Top 66%)7555(Top 3419%)
40K24.85 mi0.85 mi22263+1429032+769032+7617644(Top 66%)6774(Top 59%)6774(Top 3065%)
25.2M25.20 mi0.35 mi22209+549004+289004+2817691(Top 66%)6818(Top 60%)6818(Top 3085%)
Finish26.22 mi1.02 mi22086+1238955+498955+4918064(Top 68%)6945(Top 61%)6945(Top 3143%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

22877

Females

9274

F65-69

9274

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23641

Females

9698

F65-69

9698

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

22877

Females

9274

F65-69

9274

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

22472

Females

9069

F65-69

9069

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22467

Females

9052

F65-69

9052

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

22074

Females

8877

F65-69

8877

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21790

Females

8787

F65-69

8787

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21350

Females

8612

F65-69

8612

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

20774

Females

8343

F65-69

8343

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

20259

Females

8097

F65-69

8097

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18584

Females

7183

F65-69

7183

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19179

Females

7555

F65-69

7555

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17644

Females

6774

F65-69

6774

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17691

Females

6818

F65-69

6818

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18064

Females

6945

F65-69

6945

Passing Analysis

Category:
Athletes Passed
3615
Passed By
61
Net Change
+3554
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25640
5K → 10K9702+968#25640#24672
10K → 15K6147+607#24672#24065
15K → 20K3759+366#24065#23699
20K → Half690+69#23699#23630
Half → 25K2582+256#23630#23374
25K → 30K32019+301#23374#23073
30K → 20M1606+154#23073#22919
20M → 21M1229+113#22919#22806
21M → 35K883+85#22806#22721
35K → 23M2102+208#22721#22513
23M → 24M1091+108#22513#22405
24M → 40K1420+142#22405#22263
40K → 25.2M551+54#22263#22209
25.2M → Finish1230+123#22209#22086
TOTALS361561+3554
📊

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