Quick Links:All Results|Race Analytics|CourseCourse Information|ContactContact Time Management

Keiko Sasakawa

Bib: 25188•F

0:00

0:00

/ mi

Masters

Be the first to cheer!

Overall

#0 / 29021

Gender (Female)

#0 / 12578

Masters (Masters Women)

#0 / 6862

Age Group (F60-64)

#0 / 782

Top 29%

Race Day Weather

51°/41°F

overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start

0:00:00

Race begins

Start

0:00:00

Race begins

27:15

3.11 mi

Rank: #21556

Start → 5K

27:15 | 8:47/mi

27:15

3.11 mi

Rank: #21556

Start → 5K

27:15 | 8:47/mi

10K

54:27

6.21 mi

Rank: #21654 (-98)

5K → 10K

27:12 | 8:46/mi

10K

54:27

6.21 mi

Rank: #21654 (-98)

5K → 10K

27:12 | 8:46/mi

15K

1:21:45

9.32 mi

Rank: #21640 (+14)

10K → 15K

27:18 | 8:48/mi

15K

1:21:45

9.32 mi

Rank: #21640 (+14)

10K → 15K

27:18 | 8:48/mi

20K

1:49:08

12.43 mi

Rank: #21457 (+183)

15K → 20K

27:23 | 8:49/mi

20K

1:49:08

12.43 mi

Rank: #21457 (+183)

15K → 20K

27:23 | 8:49/mi

HALF

1:55:02

13.11 mi

Rank: #21438 (+19)

20K → HALF

5:54 | 8:40/mi

HALF

1:55:02

13.11 mi

Rank: #21438 (+19)

20K → HALF

5:54 | 8:40/mi

25K

2:16:38

15.53 mi

Rank: #21300 (+138)

HALF → 25K

21:36 | 8:55/mi

25K

2:16:38

15.53 mi

Rank: #21300 (+138)

HALF → 25K

21:36 | 8:55/mi

30K

2:45:13

18.64 mi

Rank: #21130 (+170)

25K → 30K

28:35 | 9:13/mi

30K

2:45:13

18.64 mi

Rank: #21130 (+170)

25K → 30K

28:35 | 9:13/mi

20M

2:57:52

20.00 mi

Rank: #21048 (+82)

30K → 20M

12:39 | 9:19/mi

20M

2:57:52

20.00 mi

Rank: #21048 (+82)

30K → 20M

12:39 | 9:19/mi

21M

3:07:36

21.00 mi

Rank: #20976 (+72)

20M → 21M

9:44 | 9:44/mi

21M

3:07:36

21.00 mi

Rank: #20976 (+72)

20M → 21M

9:44 | 9:44/mi

35K

3:14:41

21.75 mi

Rank: #21007 (-31)

21M → 35K

7:05 | 9:29/mi

35K

3:14:41

21.75 mi

Rank: #21007 (-31)

21M → 35K

7:05 | 9:29/mi

23M

3:26:46

23.00 mi

Rank: #21038 (-31)

35K → 23M

12:05 | 9:40/mi

23M

3:26:46

23.00 mi

Rank: #21038 (-31)

35K → 23M

12:05 | 9:40/mi

24M

3:36:09

24.00 mi

Rank: #21047 (-9)

23M → 24M

9:23 | 9:23/mi

24M

3:36:09

24.00 mi

Rank: #21047 (-9)

23M → 24M

9:23 | 9:23/mi

40K

3:44:24

24.85 mi

Rank: #21066 (-19)

24M → 40K

8:15 | 9:39/mi

40K

3:44:24

24.85 mi

Rank: #21066 (-19)

24M → 40K

8:15 | 9:39/mi

25.2M

3:48:00

25.20 mi

Rank: #21063 (+3)

40K → 25.2M

3:36 | 10:27/mi

25.2M

3:48:00

25.20 mi

Rank: #21063 (+3)

40K → 25.2M

3:36 | 10:27/mi

FINISH

3:58:40

26.22 mi

Rank: #21326 (-263)

25.2M → FINISH

10:40 | 10:29/mi

FINISH

3:58:40

26.22 mi

Rank: #21326 (-263)

25.2M → FINISH

10:40 | 10:29/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster

via HALF

Distance13.11 mi

Time1:55:02

Pace8:47 /mi

2nd Half

Spacer

Distance13.11 mi

Time2:03:38

Pace9:26 /mi

📊Positive Split: 7.5% slower second half

Checkpoint Splits

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment Time	Segment Pace	Diff
5K	3.11 mi	11:32:46	27:15	8:47	27:15	8:47	-
10K	6.21 mi	11:59:58	54:27	8:46	27:12	8:46	-0:01
15K	9.32 mi	12:27:16	1:21:45	8:47	27:18	8:48	+0:02
20K	12.43 mi	12:54:39	1:49:08	8:47	27:23	8:49	+0:01
HALF	13.11 mi	13:00:33	1:55:02	8:47	5:54	8:40	-0:09
25K	15.53 mi	13:22:09	2:16:38	8:48	21:36	8:55	+0:15
30K	18.64 mi	13:50:44	2:45:13	8:52	28:35	9:13	+0:18
20M	20.00 mi	14:03:23	2:57:52	8:54	12:39	9:19	+0:06
21M	21.00 mi	14:13:07	3:07:36	8:57	9:44	9:44	+0:25
35K	21.75 mi	14:20:12	3:14:41	8:58	7:05	9:29	-0:15
23M	23.00 mi	14:32:17	3:26:46	9:00	12:05	9:40	+0:11
24M	24.00 mi	14:41:40	3:36:09	9:01	9:23	9:23	-0:17
40K	24.85 mi	14:49:55	3:44:24	9:02	8:15	9:39	+0:16
25.2M	25.20 mi	14:53:31	3:48:00	9:03	3:36	10:27	+0:48
FINISH	26.22 mi	15:04:11	3:58:40	9:07	10:40	10:29	+0:02

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:40 /mi

Average Pace

9:07 /mi

Slowest Pace

10:29 /mi

Loading chart...

Fastest

Middle

Slowest

Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:16:38

57% of race

Time at Steady Pace

57:42

24% of race

Time at Slower Pace

44:20

19% of race

Average Pace: 9:06 /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.

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment	Pace	Rank
5K	3.11 mi	11:32:46	27:15	8:47	27:15	8:47	#21556
10K	6.21 mi	11:59:58	54:27	8:46	27:12	8:46	#21654
15K	9.32 mi	12:27:16	1:21:45	8:47	27:18	8:48	#21640
20K	12.43 mi	12:54:39	1:49:08	8:47	27:23	8:49	#21457
HALF	13.11 mi	13:00:33	1:55:02	8:47	5:54	8:40	#21438
25K	15.53 mi	13:22:09	2:16:38	8:48	21:36	8:55	#21300
30K	18.64 mi	13:50:44	2:45:13	8:52	28:35	9:13	#21130
20M	20.00 mi	14:03:23	2:57:52	8:54	12:39	9:19	#21048
21M	21.00 mi	14:13:07	3:07:36	8:57	9:44	9:44	#20976
35K	21.75 mi	14:20:12	3:14:41	8:58	7:05	9:29	#21007
23M	23.00 mi	14:32:17	3:26:46	9:00	12:05	9:40	#21038
24M	24.00 mi	14:41:40	3:36:09	9:01	9:23	9:23	#21047
40K	24.85 mi	14:49:55	3:44:24	9:02	8:15	9:39	#21066
25.2M	25.20 mi	14:53:31	3:48:00	9:03	3:36	10:27	#21063
FINISH	26.22 mi	15:04:11	3:58:40	9:07	10:40	10:29	#21326

Faster pace

Steady pace

Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

Checkpoint	Distance	Seg. Dist	Overall	Females	F60-64	Seg. Overall	Seg. Females	Seg. F60-64
5K	3.11 mi	3.11 mi	21556	8472	8472	21672(Top 75%)	8462(Top 67%)	8462(Top 1082%)
10K	6.21 mi	3.10 mi	21654-98	8495-23	8495-23	21695(Top 75%)	8494(Top 68%)	8494(Top 1086%)
15K	9.32 mi	3.11 mi	21640+14	8484+11	8484+11	21672(Top 75%)	8462(Top 67%)	8462(Top 1082%)
20K	12.43 mi	3.11 mi	21457+183	8394+90	8394+90	21053(Top 73%)	8164(Top 65%)	8164(Top 1044%)
HALF	13.11 mi	0.68 mi	21438+19	8384+10	8384+10	21149(Top 73%)	8200(Top 65%)	8200(Top 1049%)
25K	15.53 mi	2.42 mi	21300+138	8319+65	8319+65	20754(Top 72%)	8044(Top 64%)	8044(Top 1029%)
30K	18.64 mi	3.11 mi	21130+170	8240+79	8240+79	20529(Top 71%)	8018(Top 64%)	8018(Top 1025%)
20M	20.00 mi	1.36 mi	21048+82	8220+20	8220+20	20341(Top 70%)	7995(Top 64%)	7995(Top 1022%)
21M	21.00 mi	1.00 mi	20976+72	8191+29	8191+29	19532(Top 67%)	7607(Top 60%)	7607(Top 973%)
35K	21.75 mi	0.75 mi	21007-31	8206-15	8206-15	21677(Top 75%)	8786(Top 70%)	8786(Top 1124%)
23M	23.00 mi	1.25 mi	21038-31	8227-21	8227-21	21112(Top 73%)	8527(Top 68%)	8527(Top 1090%)
24M	24.00 mi	1.00 mi	21047-9	8246-19	8246-19	20938(Top 72%)	8509(Top 68%)	8509(Top 1088%)
40K	24.85 mi	0.85 mi	21066-19	8275-29	8275-29	20908(Top 72%)	8527(Top 68%)	8527(Top 1090%)
25.2M	25.20 mi	0.35 mi	21063+3	8280-5	8280-5	20912(Top 72%)	8523(Top 68%)	8523(Top 1090%)
FINISH	26.22 mi	1.02 mi	21326-263	8422-142	8422-142	25000(Top 86%)	10630(Top 85%)	10630(Top 1359%)

10630

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Position interactions are being recalculated

Started about 7 hours ago. This usually takes 10-20 minutes. Please check back shortly.

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

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

Quick Links

Explore more race data and athlete comparisons

All Results

Browse complete race results with filtering

→

Race Analytics

View race statistics, trends, and insights

→

Course Information

View interactive course map and elevation

→

Contact Time Management

Questions about your timing data or results

→

Results processed 3 months ago

Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

Boston Athletic Association

Race timed by

Mika Timing

Keiko Sasakawa

Race Timeline and Course Information

⏱️ Race Timeline

Race Animation with Course Map

Splits & Pacing

Half Splits

Checkpoint Splits

Checkpoint Splits Visualizations

📈Pace Line

Pace Progression

📊Segments

Segment Time Comparison

🎨Heatmap

Pace Heatmap

✨Sparklines

Checkpoint Splits with Pace Trends

Rankings

Checkpoint and Segment Rankings

Segment Performance Analysis

10K→15K

5K→10K

10K→15K

15K→20K

20K→HALF

HALF→25K

25K→30K

30K→20M

20M→21M

21M→35K

35K→23M

23M→24M

24M→40K

40K→25.2M

25.2M→FINISH

Passing

Passing Analysis

Activity Data

Export & Support

Export Track Data

Questions or issues regarding timing data?

Quick Links

All Results

Race Analytics

Course Information

Contact Time Management

Public Race Data