Boston Marathon logo
BOSTON MARATHON 2023

Kristin Sonon

Bib: 17456•F

WA

0:00
0:00
/ mi
Masters
Be the first to cheer!
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
26:06
Rank: #16889
Start → 5K
8:24/mi
26:06 split
10K· 6.21 mi
51:40
Rank: #16620 (+269)
5K → 10K
8:14/mi
25:34 split
15K· 9.32 mi
1:17:30
Rank: #16618 (+2)
10K → 15K
8:19/mi
25:50 split
20K· 12.43 mi
1:43:27
Rank: #16460 (+158)
15K → 20K
8:21/mi
25:57 split
Half· 13.11 mi
1:49:01
Rank: #16408 (+52)
20K → Half
8:10/mi
5:34 split
25K· 15.53 mi
2:09:07
Rank: #16116 (+292)
Half → 25K
8:17/mi
20:06 split
30K· 18.64 mi
2:35:49
Rank: #15863 (+253)
25K → 30K
8:36/mi
26:42 split
20M
2:47:35
Rank: #15736 (+127)
30K → 20M
8:40/mi
11:46 split
21M
2:57:40
Rank: #15931 (-195)
20M → 21M
10:05/mi
10:05 split
35K· 21.75 mi
3:03:49
Rank: #15809 (+122)
21M → 35K
8:13/mi
6:09 split
23M
3:14:38
Rank: #15694 (+115)
35K → 23M
8:38/mi
10:49 split
24M
3:23:03
Rank: #15605 (+89)
23M → 24M
8:25/mi
8:25 split
40K· 24.85 mi
3:30:24
Rank: #15552 (+53)
24M → 40K
8:36/mi
7:21 split
25.2M
3:33:33
Rank: #15515 (+37)
40K → 25.2M
9:08/mi
3:09 split
Finish· 26.22 mi
3:41:55
Rank: #15428 (+87)
25.2M → Finish
8:13/mi
8:22 split

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
Time1:49:01
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:52:54
Pace8:37 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:5026:068:2426:06
8:24
-
10K
6.21 mi11:48:2451:408:1925:34
8:14
-0:10
15K
9.32 mi12:14:141:17:308:1925:50
8:19
+0:05
20K
12.43 mi12:40:111:43:278:1925:57
8:21
+0:02
Half
13.11 mi12:45:451:49:018:195:34
8:10
-0:11
25K
15.53 mi13:05:512:09:078:1920:06
8:17
+0:07
30K
18.64 mi13:32:332:35:498:2226:42
8:36
+0:19
20M
20.00 mi13:44:192:47:358:2311:46
8:40
+0:04
21M
21.00 mi13:54:242:57:408:2810:05
10:05
+1:25
35K
21.75 mi14:00:333:03:498:276:09
8:13
-1:52
23M
23.00 mi14:11:223:14:388:2810:49
8:38
+0:25
24M
24.00 mi14:19:473:23:038:288:25
8:25
-0:13
40K
24.85 mi14:27:083:30:248:287:21
8:36
+0:11
25.2M
25.20 mi14:30:173:33:338:283:09
9:08
+0:32
Finish
26.22 mi14:38:393:41:558:288:22
8:13
-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

8:10 /mi

Average Pace

8:28 /mi

Slowest Pace

10:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:16:55

89% of race

Time at Slower Pace

25:00

11% 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 mi11:22:5026:068:2426:06
8:24
#16889
10K
6.21 mi11:48:2451:408:1925:34
8:14
#16620
15K
9.32 mi12:14:141:17:308:1925:50
8:19
#16618
20K
12.43 mi12:40:111:43:278:1925:57
8:21
#16460
Half
13.11 mi12:45:451:49:018:195:34
8:10
#16408
25K
15.53 mi13:05:512:09:078:1920:06
8:17
#16116
30K
18.64 mi13:32:332:35:498:2226:42
8:36
#15863
20M
20.00 mi13:44:192:47:358:2311:46
8:40
#15736
21M
21.00 mi13:54:242:57:408:2810:05
10:05
#15931
35K
21.75 mi14:00:333:03:498:276:09
8:13
#15809
23M
23.00 mi14:11:223:14:388:2810:49
8:38
#15694
24M
24.00 mi14:19:473:23:038:288:25
8:25
#15605
40K
24.85 mi14:27:083:30:248:287:21
8:36
#15552
25.2M
25.20 mi14:30:173:33:338:283:09
9:08
#15515
Finish
26.22 mi14:38:393:41:558:288:22
8:13
#15428
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi168895851585116643(Top 63%)5694(Top 50%)5694(Top 303%)
10K6.21 mi3.10 mi16620+2695656+1955656+19516461(Top 62%)5551(Top 49%)5551(Top 296%)
15K9.32 mi3.11 mi16618+25673-175673-1716643(Top 63%)5694(Top 50%)5694(Top 303%)
20K12.43 mi3.11 mi16460+1585582+915582+9115956(Top 60%)5322(Top 47%)5322(Top 283%)
Half13.11 mi0.68 mi16408+525557+255557+2515549(Top 58%)5021(Top 44%)5021(Top 267%)
25K15.53 mi2.42 mi16116+2925406+1515406+15114903(Top 56%)4770(Top 42%)4770(Top 254%)
30K18.64 mi3.11 mi15863+2535291+1155291+11514897(Top 56%)4871(Top 43%)4871(Top 259%)
20M20.00 mi1.36 mi15736+1275230+615230+6114646(Top 55%)4798(Top 42%)4798(Top 255%)
21M21.00 mi1.00 mi15931-1955373-1435373-14318318(Top 69%)6937(Top 61%)6937(Top 369%)
35K21.75 mi0.75 mi15809+1225320+535320+5313653(Top 51%)4388(Top 38%)4388(Top 234%)
23M23.00 mi1.25 mi15694+1155279+415279+4114048(Top 53%)4649(Top 41%)4649(Top 248%)
24M24.00 mi1.00 mi15605+895243+365243+3614011(Top 53%)4685(Top 41%)4685(Top 249%)
40K24.85 mi0.85 mi15552+535217+265217+2613969(Top 52%)4732(Top 41%)4732(Top 252%)
25.2M25.20 mi0.35 mi15515+375203+145203+1413357(Top 50%)4428(Top 39%)4428(Top 236%)
Finish26.22 mi1.02 mi15428+875165+385165+3813547(Top 51%)4502(Top 39%)4502(Top 240%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16643

Females

5694

F40-44

5694

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16461

Females

5551

F40-44

5551

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16643

Females

5694

F40-44

5694

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

15956

Females

5322

F40-44

5322

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15549

Females

5021

F40-44

5021

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

14903

Females

4770

F40-44

4770

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14897

Females

4871

F40-44

4871

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14646

Females

4798

F40-44

4798

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18318

Females

6937

F40-44

6937

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

13653

Females

4388

F40-44

4388

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14048

Females

4649

F40-44

4649

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14011

Females

4685

F40-44

4685

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13969

Females

4732

F40-44

4732

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13357

Females

4428

F40-44

4428

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

13547

Females

4502

F40-44

4502

Passing Analysis

Category:
Athletes Passed
2408
Passed By
947
Net Change
+1461
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16889
5K → 10K454185+269#16889#16620
10K → 15K202200+2#16620#16618
15K → 20K24688+158#16618#16460
20K → Half6311+52#16460#16408
Half → 25K31725+292#16408#16116
25K → 30K30249+253#16116#15863
30K → 20M16134+127#15863#15736
20M → 21M34229-195#15736#15931
21M → 35K1264+122#15931#15809
35K → 23M13621+115#15809#15694
23M → 24M11122+89#15694#15605
24M → 40K8532+53#15605#15552
40K → 25.2M5013+37#15552#15515
25.2M → Finish12134+87#15515#15428
TOTALS2408947+1461
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing