Boston Marathon logo
BOSTON MARATHON 2023

Phuong Nothelfer

Bib: 22796•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 (F50-54)
#0 / 1207
Top 50%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:42
Rank: #18201
Start → 5K
26:42 | 8:36/mi
10K· 6.21 mi
53:49
Rank: #18889 (-688)
5K → 10K
27:07 | 8:44/mi
15K· 9.32 mi
1:20:55
Rank: #18945 (-56)
10K → 15K
27:06 | 8:43/mi
20K· 12.43 mi
1:48:22
Rank: #18901 (+44)
15K → 20K
27:27 | 8:50/mi
Half· 13.11 mi
1:54:23
Rank: #18946 (-45)
20K → Half
6:01 | 8:49/mi
25K· 15.53 mi
2:15:56
Rank: #18850 (+96)
Half → 25K
21:33 | 8:53/mi
30K· 18.64 mi
2:44:30
Rank: #18713 (+137)
25K → 30K
28:34 | 9:12/mi
20M
2:57:09
Rank: #18659 (+54)
30K → 20M
12:39 | 9:19/mi
21M
3:06:53
Rank: #18551 (+108)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
3:13:25
Rank: #18454 (+97)
21M → 35K
6:32 | 8:44/mi
23M
3:25:04
Rank: #18391 (+63)
35K → 23M
11:39 | 9:18/mi
24M
3:33:59
Rank: #18319 (+72)
23M → 24M
8:55 | 8:55/mi
40K· 24.85 mi
3:41:40
Rank: #18253 (+66)
24M → 40K
7:41 | 8:59/mi
25.2M
3:45:01
Rank: #18218 (+35)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:53:53
Rank: #18151 (+67)
25.2M → Finish
8:52 | 8:42/mi

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
Time1:54:23
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time1:59:30
Pace9:07 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4526:428:3626:42
8:36
-
10K
6.21 mi11:47:5253:498:4027:07
8:44
+0:08
15K
9.32 mi12:14:581:20:558:4127:06
8:43
-0:01
20K
12.43 mi12:42:251:48:228:4327:27
8:50
+0:07
Half
13.11 mi12:48:261:54:238:446:01
8:49
-0:01
25K
15.53 mi13:09:592:15:568:4521:33
8:53
+0:04
30K
18.64 mi13:38:332:44:308:4928:34
9:12
+0:19
20M
20.00 mi13:51:122:57:098:5112:39
9:19
+0:07
21M
21.00 mi14:00:563:06:538:549:44
9:44
+0:25
35K
21.75 mi14:07:283:13:258:546:32
8:44
-1:00
23M
23.00 mi14:19:073:25:048:5511:39
9:18
+0:34
24M
24.00 mi14:28:023:33:598:558:55
8:55
-0:23
40K
24.85 mi14:35:433:41:408:557:41
8:59
+0:04
25.2M
25.20 mi14:39:043:45:018:563:21
9:43
+0:44
Finish
26.22 mi14:47:563:53:538:568:52
8:42
-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

8:36 /mi

Average Pace

8:56 /mi

Slowest Pace

9:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:40:48

94% of race

Time at Steady Pace

13:05

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:55 /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 mi11:20:4526:428:3626:42
8:36
#18201
10K
6.21 mi11:47:5253:498:4027:07
8:44
#18889
15K
9.32 mi12:14:581:20:558:4127:06
8:43
#18945
20K
12.43 mi12:42:251:48:228:4327:27
8:50
#18901
Half
13.11 mi12:48:261:54:238:446:01
8:49
#18946
25K
15.53 mi13:09:592:15:568:4521:33
8:53
#18850
30K
18.64 mi13:38:332:44:308:4928:34
9:12
#18713
20M
20.00 mi13:51:122:57:098:5112:39
9:19
#18659
21M
21.00 mi14:00:563:06:538:549:44
9:44
#18551
35K
21.75 mi14:07:283:13:258:546:32
8:44
#18454
23M
23.00 mi14:19:073:25:048:5511:39
9:18
#18391
24M
24.00 mi14:28:023:33:598:558:55
8:55
#18319
40K
24.85 mi14:35:433:41:408:557:41
8:59
#18253
25.2M
25.20 mi14:39:043:45:018:563:21
9:43
#18218
Finish
26.22 mi14:47:563:53:538:568:52
8:42
#18151
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi182016683668319103(Top 72%)7163(Top 63%)7163(Top 593%)
10K6.21 mi3.10 mi18889-6887071-3887071-38819577(Top 74%)7434(Top 65%)7434(Top 616%)
15K9.32 mi3.11 mi18945-567096-257096-2519103(Top 72%)7163(Top 63%)7163(Top 593%)
20K12.43 mi3.11 mi18901+447064+327064+3218863(Top 71%)7005(Top 61%)7005(Top 580%)
Half13.11 mi0.68 mi18946-457088-247088-2419598(Top 74%)7426(Top 65%)7426(Top 615%)
25K15.53 mi2.42 mi18850+967035+537035+5318403(Top 69%)6789(Top 59%)6789(Top 562%)
30K18.64 mi3.11 mi18713+1376980+556980+5518151(Top 68%)6736(Top 59%)6736(Top 558%)
20M20.00 mi1.36 mi18659+546959+216959+2118073(Top 68%)6779(Top 59%)6779(Top 562%)
21M21.00 mi1.00 mi18551+1086904+556904+5517006(Top 64%)6199(Top 54%)6199(Top 514%)
35K21.75 mi0.75 mi18454+976862+426862+4216633(Top 62%)6073(Top 53%)6073(Top 503%)
23M23.00 mi1.25 mi18391+636843+196843+1917551(Top 66%)6605(Top 58%)6605(Top 547%)
24M24.00 mi1.00 mi18319+726813+306813+3016874(Top 63%)6289(Top 55%)6289(Top 521%)
40K24.85 mi0.85 mi18253+666788+256788+2516097(Top 60%)5917(Top 52%)5917(Top 490%)
25.2M25.20 mi0.35 mi18218+356770+186770+1816263(Top 61%)6030(Top 53%)6030(Top 500%)
Finish26.22 mi1.02 mi18151+676737+336737+3316524(Top 62%)6115(Top 54%)6115(Top 507%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19103

Females

7163

F50-54

7163

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19577

Females

7434

F50-54

7434

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19103

Females

7163

F50-54

7163

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18863

Females

7005

F50-54

7005

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

19598

Females

7426

F50-54

7426

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

18403

Females

6789

F50-54

6789

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

18151

Females

6736

F50-54

6736

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

18073

Females

6779

F50-54

6779

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

17006

Females

6199

F50-54

6199

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16633

Females

6073

F50-54

6073

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

17551

Females

6605

F50-54

6605

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

16874

Females

6289

F50-54

6289

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16097

Females

5917

F50-54

5917

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16263

Females

6030

F50-54

6030

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

16524

Females

6115

F50-54

6115

Passing Analysis

Category:
Athletes Passed
1628
Passed By
1578
Net Change
+50
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18201
5K → 10K106794-688#18201#18889
10K → 15K156212-56#18889#18945
15K → 20K181137+44#18945#18901
20K → Half1560-45#18901#18946
Half → 25K16468+96#18946#18850
25K → 30K22992+137#18850#18713
30K → 20M10652+54#18713#18659
20M → 21M14537+108#18659#18551
21M → 35K1047+97#18551#18454
35K → 23M11249+63#18454#18391
23M → 24M8917+72#18391#18319
24M → 40K9024+66#18319#18253
40K → 25.2M438+35#18253#18218
25.2M → Finish8821+67#18218#18151
TOTALS16281578+50
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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