Boston Marathon logo
BOSTON MARATHON 2023

Christina Miller

Bib: 18777•F

RI

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

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
8:10/mi
25:22
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
50:21
↑ 79↓ 1380.4%
15K· 9.32 mi
8:06/mi
1:15:30
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:42:14
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:47:57
↑ 19↓ 370.5%
25K· 15.53 mi
9:09/mi
2:10:08
↑ 66↓ 880.2%
30K· 18.64 mi
9:35/mi
2:39:54
↑ 181↓ 1480.2%
20M
9:39/mi
2:53:01
↑ 64↓ 500.2%
21M
14:41/mi
3:07:42
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:14:16
↑ 17↓ 861.7%
23M
10:25/mi
3:27:18
↑ 23↓ 630.6%
24M
9:49/mi
3:37:07
↓ 821.3%
40K· 24.85 mi
10:05/mi
3:45:44
↓ 200.3%
25.2M
10:35/mi
3:49:23
↑ 13↓ 160.2%
Finish· 26.22 mi
9:16/mi
3:58:50
↑ 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
Time1:47:57
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time2:10:53
Pace9:59 /mi
📊Positive Split: 21.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4625:228:1025:22
8:10
-
10K
6.21 mi11:41:4550:218:0624:59
8:02
-0:08
15K
9.32 mi12:06:541:15:308:0625:09
8:06
+0:04
20K
12.43 mi12:33:381:42:148:1426:44
8:36
+0:30
Half
13.11 mi12:39:211:47:578:145:43
8:23
-0:13
25K
15.53 mi13:01:322:10:088:2322:11
9:09
+0:46
30K
18.64 mi13:31:182:39:548:3529:46
9:35
+0:26
20M
20.00 mi13:44:252:53:018:3913:07
9:39
+0:04
21M
21.00 mi13:59:063:07:428:5614:41
14:41
+5:02
35K
21.75 mi14:05:403:14:168:566:34
8:47
-5:54
23M
23.00 mi14:18:423:27:189:0113:02
10:25
+1:38
24M
24.00 mi14:28:313:37:079:039:49
9:49
-0:36
40K
24.85 mi14:37:083:45:449:058:37
10:05
+0:16
25.2M
25.20 mi14:40:473:49:239:063:39
10:35
+0:30
Finish
26.22 mi14:50:143:58:509:079:27
9:16
-1:19

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

8:02 /mi

Average Pace

9:07 /mi

Slowest Pace

14:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:13

34% of race

Time at Steady Pace

1:57:38

49% of race

Time at Slower Pace

39:59

17% of race

Average Pace: 9:07 /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 mi11:16:4625:228:1025:22
8:10
#15207
10K
6.21 mi11:41:4550:218:0624:59
8:02
#15155
15K
9.32 mi12:06:541:15:308:0625:09
8:06
#15124
20K
12.43 mi12:33:381:42:148:1426:44
8:36
#15763
Half
13.11 mi12:39:211:47:578:145:43
8:23
#15823
25K
15.53 mi13:01:322:10:088:2322:11
9:09
#16596
30K
18.64 mi13:31:182:39:548:3529:46
9:35
#17230
20M
20.00 mi13:44:252:53:018:3913:07
9:39
#17426
21M
21.00 mi13:59:063:07:428:5614:41
14:41
#18737
35K
21.75 mi14:05:403:14:168:566:34
8:47
#18662
23M
23.00 mi14:18:423:27:189:0113:02
10:25
#18897
24M
24.00 mi14:28:313:37:079:039:49
9:49
#18989
40K
24.85 mi14:37:083:45:449:058:37
10:05
#19054
25.2M
25.20 mi14:40:473:49:239:063:39
10:35
#19069
Finish
26.22 mi14:50:143:58:509:079:27
9:16
#19101
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152074779477915148(Top 57%)4767(Top 42%)4767(Top 98%)
10K6.21 mi3.10 mi15155+524748+314748+3115128(Top 57%)4748(Top 42%)4748(Top 97%)
15K9.32 mi3.11 mi15124+314741+74741+715148(Top 57%)4767(Top 42%)4767(Top 98%)
20K12.43 mi3.11 mi15763-6395157-4165157-41617537(Top 66%)6254(Top 55%)6254(Top 128%)
Half13.11 mi0.68 mi15823-605202-455202-4517086(Top 64%)5965(Top 52%)5965(Top 122%)
25K15.53 mi2.42 mi16596-7735694-4925694-49219611(Top 74%)7475(Top 65%)7475(Top 153%)
30K18.64 mi3.11 mi17230-6346096-4026096-40219720(Top 74%)7599(Top 67%)7599(Top 156%)
20M20.00 mi1.36 mi17426-1966234-1386234-13819405(Top 73%)7518(Top 66%)7518(Top 154%)
21M21.00 mi1.00 mi18737-13117011-7777011-77725546(Top 96%)10876(Top 95%)10876(Top 223%)
35K21.75 mi0.75 mi18662+756970+416970+4116877(Top 63%)6221(Top 54%)6221(Top 127%)
23M23.00 mi1.25 mi18897-2357128-1587128-15821095(Top 79%)8578(Top 75%)8578(Top 176%)
24M24.00 mi1.00 mi18989-927194-667194-6620291(Top 76%)8144(Top 71%)8144(Top 167%)
40K24.85 mi0.85 mi19054-657231-377231-3720186(Top 76%)8155(Top 71%)8155(Top 167%)
25.2M25.20 mi0.35 mi19069-157243-127243-1219381(Top 73%)7715(Top 68%)7715(Top 158%)
Finish26.22 mi1.02 mi19101-327267-247267-2419268(Top 72%)7593(Top 66%)7593(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

15148

Females

4767

F18-39

4767

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

15128

Females

4748

F18-39

4748

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

15148

Females

4767

F18-39

4767

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17537

Females

6254

F18-39

6254

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17086

Females

5965

F18-39

5965

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

19611

Females

7475

F18-39

7475

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

19720

Females

7599

F18-39

7599

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19405

Females

7518

F18-39

7518

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

25546

Females

10876

F18-39

10876

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16877

Females

6221

F18-39

6221

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

21095

Females

8578

F18-39

8578

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20291

Females

8144

F18-39

8144

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20186

Females

8155

F18-39

8155

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19381

Females

7715

F18-39

7715

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

19268

Females

7593

F18-39

7593

Passing Analysis

Category:
Athletes Passed
939
Passed By
4833
Net Change
-3894
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15207
5K → 10K333281+52#15207#15155
10K → 15K187156+31#15155#15124
15K → 20K50689-639#15124#15763
20K → Half1575-60#15763#15823
Half → 25K24797-773#15823#16596
25K → 30K56690-634#16596#17230
30K → 20M42238-196#17230#17426
20M → 21M11312-1311#17426#18737
21M → 35K8712+75#18737#18662
35K → 23M26261-235#18662#18897
23M → 24M31123-92#18897#18989
24M → 40K3499-65#18989#19054
40K → 25.2M1530-15#19054#19069
25.2M → Finish3870-32#19069#19101
TOTALS9394833-3894
📊

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