Boston Marathon logo
BOSTON MARATHON 2023

Christy Thomson

Bib: 16962•F

PA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:49
Rank: #20235
Start → 5K
27:49 | 8:57/mi
10K· 6.21 mi
55:09
Rank: #20062 (+173)
5K → 10K
27:20 | 8:48/mi
15K· 9.32 mi
1:22:28
Rank: #19855 (+207)
10K → 15K
27:19 | 8:48/mi
20K· 12.43 mi
1:50:23
Rank: #19768 (+87)
15K → 20K
27:55 | 8:59/mi
Half· 13.11 mi
1:56:29
Rank: #19791 (-23)
20K → Half
6:06 | 8:56/mi
25K· 15.53 mi
2:20:00
Rank: #20177 (-386)
Half → 25K
23:31 | 9:42/mi
30K· 18.64 mi
2:49:27
Rank: #20011 (+166)
25K → 30K
29:27 | 9:29/mi
20M
3:02:10
Rank: #19854 (+157)
30K → 20M
12:43 | 9:21/mi
21M
3:12:06
Rank: #19704 (+150)
20M → 21M
9:56 | 9:56/mi
35K· 21.75 mi
3:19:21
Rank: #19751 (-47)
21M → 35K
7:15 | 9:41/mi
23M
3:31:12
Rank: #19670 (+81)
35K → 23M
11:51 | 9:28/mi
24M
3:40:36
Rank: #19631 (+39)
23M → 24M
9:24 | 9:24/mi
40K· 24.85 mi
3:48:44
Rank: #19589 (+42)
24M → 40K
8:08 | 9:31/mi
25.2M
3:52:17
Rank: #19572 (+17)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
4:01:46
Rank: #19575 (-3)
25.2M → Finish
9:29 | 9:18/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
Time1:56:29
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time2:05:17
Pace9:33 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4027:498:5727:49
8:57
-
10K
6.21 mi11:48:0055:098:5327:20
8:48
-0:09
15K
9.32 mi12:15:191:22:288:5127:19
8:48
0:00
20K
12.43 mi12:43:141:50:238:5327:55
8:59
+0:11
Half
13.11 mi12:49:201:56:298:536:06
8:56
-0:03
25K
15.53 mi13:12:512:20:009:0123:31
9:42
+0:46
30K
18.64 mi13:42:182:49:279:0529:27
9:29
-0:13
20M
20.00 mi13:55:013:02:109:0612:43
9:21
-0:08
21M
21.00 mi14:04:573:12:069:099:56
9:56
+0:35
35K
21.75 mi14:12:123:19:219:107:15
9:41
-0:15
23M
23.00 mi14:24:033:31:129:1111:51
9:28
-0:13
24M
24.00 mi14:33:273:40:369:129:24
9:24
-0:04
40K
24.85 mi14:41:353:48:449:128:08
9:31
+0:07
25.2M
25.20 mi14:45:083:52:179:133:33
10:18
+0:47
Finish
26.22 mi14:54:374:01:469:149:29
9:18
-1:00

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

8:48 /mi

Average Pace

9:14 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:31

82% of race

Time at Steady Pace

44:15

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:13 /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 mi11:20:4027:498:5727:49
8:57
#20235
10K
6.21 mi11:48:0055:098:5327:20
8:48
#20062
15K
9.32 mi12:15:191:22:288:5127:19
8:48
#19855
20K
12.43 mi12:43:141:50:238:5327:55
8:59
#19768
Half
13.11 mi12:49:201:56:298:536:06
8:56
#19791
25K
15.53 mi13:12:512:20:009:0123:31
9:42
#20177
30K
18.64 mi13:42:182:49:279:0529:27
9:29
#20011
20M
20.00 mi13:55:013:02:109:0612:43
9:21
#19854
21M
21.00 mi14:04:573:12:069:099:56
9:56
#19704
35K
21.75 mi14:12:123:19:219:107:15
9:41
#19751
23M
23.00 mi14:24:033:31:129:1111:51
9:28
#19670
24M
24.00 mi14:33:273:40:369:129:24
9:24
#19631
40K
24.85 mi14:41:353:48:449:128:08
9:31
#19589
25.2M
25.20 mi14:45:083:52:179:133:33
10:18
#19572
Finish
26.22 mi14:54:374:01:469:149:29
9:18
#19575
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi202357959795919473(Top 73%)7379(Top 65%)7379(Top 151%)
10K6.21 mi3.10 mi20062+1737800+1597800+15919922(Top 75%)7651(Top 67%)7651(Top 157%)
15K9.32 mi3.11 mi19855+2077654+1467654+14619473(Top 73%)7379(Top 65%)7379(Top 151%)
20K12.43 mi3.11 mi19768+877584+707584+7019631(Top 74%)7456(Top 65%)7456(Top 153%)
Half13.11 mi0.68 mi19791-237592-87592-820211(Top 76%)7782(Top 68%)7782(Top 159%)
25K15.53 mi2.42 mi20177-3867804-2127804-21221455(Top 81%)8532(Top 75%)8532(Top 175%)
30K18.64 mi3.11 mi20011+1667738+667738+6619358(Top 73%)7394(Top 65%)7394(Top 151%)
20M20.00 mi1.36 mi19854+1577652+867652+8618292(Top 69%)6909(Top 60%)6909(Top 141%)
21M21.00 mi1.00 mi19704+1507570+827570+8217817(Top 67%)6656(Top 58%)6656(Top 136%)
35K21.75 mi0.75 mi19751-477605-357605-3520456(Top 77%)8198(Top 72%)8198(Top 168%)
23M23.00 mi1.25 mi19670+817568+377568+3718208(Top 68%)6982(Top 61%)6982(Top 143%)
24M24.00 mi1.00 mi19631+397556+127556+1218872(Top 71%)7375(Top 65%)7375(Top 151%)
40K24.85 mi0.85 mi19589+427537+197537+1918401(Top 69%)7161(Top 63%)7161(Top 147%)
25.2M25.20 mi0.35 mi19572+177535+27535+218503(Top 70%)7236(Top 63%)7236(Top 148%)
Finish26.22 mi1.02 mi19575-37548-137548-1319414(Top 73%)7683(Top 67%)7683(Top 157%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

19473

Females

7379

F18-39

7379

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

19922

Females

7651

F18-39

7651

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

19473

Females

7379

F18-39

7379

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19631

Females

7456

F18-39

7456

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

20211

Females

7782

F18-39

7782

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21455

Females

8532

F18-39

8532

25K→30K

15.5 - 18.6 mi

Top 73%
×9stories
+181ft-148ft

Overall

19358

Females

7394

F18-39

7394

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

18292

Females

6909

F18-39

6909

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

17817

Females

6656

F18-39

6656

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20456

Females

8198

F18-39

8198

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

18208

Females

6982

F18-39

6982

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

18872

Females

7375

F18-39

7375

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18401

Females

7161

F18-39

7161

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18503

Females

7236

F18-39

7236

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19414

Females

7683

F18-39

7683

Passing Analysis

Category:
Athletes Passed
1939
Passed By
1279
Net Change
+660
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20235
5K → 10K415242+173#20235#20062
10K → 15K308101+207#20062#19855
15K → 20K221134+87#19855#19768
20K → Half2447-23#19768#19791
Half → 25K38424-386#19791#20177
25K → 30K24377+166#20177#20011
30K → 20M17215+157#20011#19854
20M → 21M16616+150#19854#19704
21M → 35K3279-47#19704#19751
35K → 23M10928+81#19751#19670
23M → 24M7233+39#19670#19631
24M → 40K6321+42#19631#19589
40K → 25.2M3316+17#19589#19572
25.2M → Finish4346-3#19572#19575
TOTALS19391279+660
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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