Boston Marathon logo
BOSTON MARATHON 2023

Cassandra Gould

Bib: 15558•F

VA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 50%
Division (F18-39)
#0 / 4884
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
7:45/mi
24:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:13/mi
49:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:11/mi
1:15:02
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:41:04
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:46:47
↑ 19↓ 370.5%
25K· 15.53 mi
8:32/mi
2:07:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:35:15
↑ 181↓ 1480.2%
20M
9:06/mi
2:47:37
↑ 64↓ 500.2%
21M
9:56/mi
2:57:33
↑ 106↓ 241.6%
35K· 21.75 mi
9:01/mi
3:04:18
↑ 17↓ 861.7%
23M
9:17/mi
3:15:56
↑ 23↓ 630.6%
24M
9:07/mi
3:25:03
↓ 821.3%
40K· 24.85 mi
9:18/mi
3:33:00
↓ 200.3%
25.2M
10:03/mi
3:36:28
↑ 13↓ 160.2%
Finish· 26.22 mi
9:08/mi
3:45:46
↑ 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 HalfFaster
Distance13.11 mi
Time1:46:47
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:58:59
Pace9:05 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4824:047:4524:04
7:45
-
10K
6.21 mi11:19:2149:377:5925:33
8:13
+0:28
15K
9.32 mi11:44:461:15:028:0325:25
8:11
-0:02
20K
12.43 mi12:10:481:41:048:0826:02
8:23
+0:12
Half
13.11 mi12:16:311:46:478:095:43
8:23
0:00
25K
15.53 mi12:37:132:07:298:1220:42
8:32
+0:09
30K
18.64 mi13:04:592:35:158:2027:46
8:56
+0:24
20M
20.00 mi13:17:212:47:378:2312:22
9:06
+0:10
21M
21.00 mi13:27:172:57:338:279:56
9:56
+0:50
35K
21.75 mi13:34:023:04:188:286:45
9:01
-0:55
23M
23.00 mi13:45:403:15:568:3111:38
9:17
+0:16
24M
24.00 mi13:54:473:25:038:339:07
9:07
-0:10
40K
24.85 mi14:02:443:33:008:347:57
9:18
+0:11
25.2M
25.20 mi14:06:123:36:288:353:28
10:03
+0:45
Finish
26.22 mi14:15:303:45:468:379:18
9:08
-0:55

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

7:45 /mi

Average Pace

8:37 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:29

56% of race

Time at Steady Pace

1:24:53

38% of race

Time at Slower Pace

13:24

6% of race

Average Pace: 8:37 /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 mi10:53:4824:047:4524:04
7:45
#11909
10K
6.21 mi11:19:2149:377:5925:33
8:13
#14283
15K
9.32 mi11:44:461:15:028:0325:25
8:11
#14759
20K
12.43 mi12:10:481:41:048:0826:02
8:23
#15116
Half
13.11 mi12:16:311:46:478:095:43
8:23
#15219
25K
15.53 mi12:37:132:07:298:1220:42
8:32
#15397
30K
18.64 mi13:04:592:35:158:2027:46
8:56
#15670
20M
20.00 mi13:17:212:47:378:2312:22
9:06
#15747
21M
21.00 mi13:27:172:57:338:279:56
9:56
#15902
35K
21.75 mi13:34:023:04:188:286:45
9:01
#15974
23M
23.00 mi13:45:403:15:568:3111:38
9:17
#16085
24M
24.00 mi13:54:473:25:038:339:07
9:07
#16144
40K
24.85 mi14:02:443:33:008:347:57
9:18
#16200
25.2M
25.20 mi14:06:123:36:288:353:28
10:03
#16219
Finish
26.22 mi14:15:303:45:468:379:18
9:08
#16325
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi119092823282315734(Top 59%)5133(Top 45%)5133(Top 105%)
10K6.21 mi3.10 mi14283-23744219-13964219-139616438(Top 62%)5537(Top 48%)5537(Top 113%)
15K9.32 mi3.11 mi14759-4764513-2944513-29415734(Top 59%)5133(Top 45%)5133(Top 105%)
20K12.43 mi3.11 mi15116-3574759-2464759-24616132(Top 61%)5434(Top 48%)5434(Top 111%)
Half13.11 mi0.68 mi15219-1034823-644823-6417037(Top 64%)5916(Top 52%)5916(Top 121%)
25K15.53 mi2.42 mi15397-1784961-1384961-13816428(Top 62%)5683(Top 50%)5683(Top 116%)
30K18.64 mi3.11 mi15670-2735169-2085169-20816855(Top 63%)5982(Top 52%)5982(Top 122%)
20M20.00 mi1.36 mi15747-775237-685237-6817067(Top 64%)6197(Top 54%)6197(Top 127%)
21M21.00 mi1.00 mi15902-1555356-1195356-11917791(Top 67%)6630(Top 58%)6630(Top 136%)
35K21.75 mi0.75 mi15974-725419-635419-6318005(Top 68%)6836(Top 60%)6836(Top 140%)
23M23.00 mi1.25 mi16085-1115504-855504-8517482(Top 66%)6554(Top 57%)6554(Top 134%)
24M24.00 mi1.00 mi16144-595540-365540-3617738(Top 67%)6763(Top 59%)6763(Top 138%)
40K24.85 mi0.85 mi16200-565595-555595-5517528(Top 66%)6693(Top 59%)6693(Top 137%)
25.2M25.20 mi0.35 mi16219-195610-155610-1517616(Top 66%)6743(Top 59%)6743(Top 138%)
Finish26.22 mi1.02 mi16325-1065674-645674-6418578(Top 70%)7208(Top 63%)7208(Top 148%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

15734

Females

5133

F18-39

5133

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16438

Females

5537

F18-39

5537

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

15734

Females

5133

F18-39

5133

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16132

Females

5434

F18-39

5434

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17037

Females

5916

F18-39

5916

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

16428

Females

5683

F18-39

5683

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16855

Females

5982

F18-39

5982

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

17067

Females

6197

F18-39

6197

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17791

Females

6630

F18-39

6630

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18005

Females

6836

F18-39

6836

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17482

Females

6554

F18-39

6554

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17738

Females

6763

F18-39

6763

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17528

Females

6693

F18-39

6693

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17616

Females

6743

F18-39

6743

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18578

Females

7208

F18-39

7208

Passing Analysis

Category:
Athletes Passed
708
Passed By
5124
Net Change
-4416
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11909
5K → 10K92383-2374#11909#14283
10K → 15K69545-476#14283#14759
15K → 20K91448-357#14759#15116
20K → Half16119-103#15116#15219
Half → 25K87265-178#15219#15397
25K → 30K97370-273#15397#15670
30K → 20M65142-77#15670#15747
20M → 21M43198-155#15747#15902
21M → 35K37109-72#15902#15974
35K → 23M46157-111#15974#16085
23M → 24M45104-59#16085#16144
24M → 40K52108-56#16144#16200
40K → 25.2M2241-19#16200#16219
25.2M → Finish29135-106#16219#16325
TOTALS7085124-4416
📊

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