Boston Marathon logo
BOSTON MARATHON 2023

Christine Estes

Bib: 21246•F

DC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 50%
Masters (Masters Women)
#0 / 6539
Top 39%
Division (F45-49)
#0 / 1817
Top 47%
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
8:24/mi
26:07
↑ 97↓ 3451.5%
10K· 6.21 mi
8:24/mi
52:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:29/mi
1:18:33
↑ 67↓ 78
20K· 12.43 mi
9:02/mi
1:46:36
↑ 106↓ 860.1%
Half· 13.11 mi
8:30/mi
1:52:24
↑ 19↓ 370.5%
25K· 15.53 mi
8:31/mi
2:13:03
↑ 66↓ 880.2%
30K· 18.64 mi
8:50/mi
2:40:29
↑ 181↓ 1480.2%
20M
8:50/mi
2:52:29
↑ 64↓ 500.2%
21M
9:03/mi
3:01:32
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
3:07:52
↑ 17↓ 861.7%
23M
8:30/mi
3:18:31
↑ 23↓ 630.6%
24M
8:22/mi
3:26:53
↓ 821.3%
40K· 24.85 mi
8:26/mi
3:34:06
↓ 200.3%
25.2M
9:11/mi
3:37:16
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
3:45:45
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:52:24
Pace8:34 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:53:21
Pace8:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:5126:078:2426:07
8:24
-
10K
6.21 mi11:49:5652:128:2426:05
8:24
0:00
15K
9.32 mi12:16:171:18:338:2626:21
8:29
+0:05
20K
12.43 mi12:44:201:46:368:3528:03
9:02
+0:33
Half
13.11 mi12:50:081:52:248:345:48
8:30
-0:32
25K
15.53 mi13:10:472:13:038:3420:39
8:31
+0:01
30K
18.64 mi13:38:132:40:298:3727:26
8:50
+0:19
20M
20.00 mi13:50:132:52:298:3712:00
8:50
0:00
21M
21.00 mi13:59:163:01:328:399:03
9:03
+0:13
35K
21.75 mi14:05:363:07:528:386:20
8:28
-0:35
23M
23.00 mi14:16:153:18:318:3810:39
8:30
+0:02
24M
24.00 mi14:24:373:26:538:378:22
8:22
-0:08
40K
24.85 mi14:31:503:34:068:377:13
8:26
+0:04
25.2M
25.20 mi14:35:003:37:168:373:10
9:11
+0:45
Finish
26.22 mi14:43:293:45:458:378:29
8:19
-0:52

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

8:19 /mi

Average Pace

8:37 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:42:35

99% of race

Time at Steady Pace

3:10

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:37 /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 mi11:23:5126:078:2426:07
8:24
#16934
10K
6.21 mi11:49:5652:128:2426:05
8:24
#17221
15K
9.32 mi12:16:171:18:338:2626:21
8:29
#17383
20K
12.43 mi12:44:201:46:368:3528:03
9:02
#18081
Half
13.11 mi12:50:081:52:248:345:48
8:30
#18044
25K
15.53 mi13:10:472:13:038:3420:39
8:31
#17712
30K
18.64 mi13:38:132:40:298:3727:26
8:50
#17423
20M
20.00 mi13:50:132:52:298:3712:00
8:50
#17271
21M
21.00 mi13:59:163:01:328:399:03
9:03
#17064
35K
21.75 mi14:05:363:07:528:386:20
8:28
#16982
23M
23.00 mi14:16:153:18:318:3810:39
8:30
#16777
24M
24.00 mi14:24:373:26:538:378:22
8:22
#16622
40K
24.85 mi14:31:503:34:068:377:13
8:26
#16486
25.2M
25.20 mi14:35:003:37:168:373:10
9:11
#16416
Finish
26.22 mi14:43:293:45:458:378:29
8:19
#16322
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi169345884588417685(Top 66%)6320(Top 55%)6320(Top 348%)
10K6.21 mi3.10 mi17221-2876070-1866070-18617567(Top 66%)6222(Top 54%)6222(Top 342%)
15K9.32 mi3.11 mi17383-1626144-746144-7417685(Top 66%)6320(Top 55%)6320(Top 348%)
20K12.43 mi3.11 mi18081-6986559-4156559-41519834(Top 75%)7573(Top 66%)7573(Top 417%)
Half13.11 mi0.68 mi18044+376533+266533+2617730(Top 67%)6308(Top 55%)6308(Top 347%)
25K15.53 mi2.42 mi17712+3326359+1746359+17416315(Top 61%)5622(Top 49%)5622(Top 309%)
30K18.64 mi3.11 mi17423+2896204+1556204+15516251(Top 61%)5642(Top 49%)5642(Top 311%)
20M20.00 mi1.36 mi17271+1526142+626142+6215632(Top 59%)5354(Top 47%)5354(Top 295%)
21M21.00 mi1.00 mi17064+2076027+1156027+11513729(Top 52%)4353(Top 38%)4353(Top 240%)
35K21.75 mi0.75 mi16982+825981+465981+4615157(Top 57%)5208(Top 46%)5208(Top 287%)
23M23.00 mi1.25 mi16777+2055889+925889+9213313(Top 50%)4255(Top 37%)4255(Top 234%)
24M24.00 mi1.00 mi16622+1555820+695820+6913693(Top 51%)4512(Top 39%)4512(Top 248%)
40K24.85 mi0.85 mi16486+1365764+565764+5613023(Top 49%)4227(Top 37%)4227(Top 233%)
25.2M25.20 mi0.35 mi16416+705729+355729+3513642(Top 51%)4579(Top 40%)4579(Top 252%)
Finish26.22 mi1.02 mi16322+945673+565673+5614286(Top 54%)4898(Top 43%)4898(Top 270%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17685

Females

6320

F45-49

6320

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

17567

Females

6222

F45-49

6222

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17685

Females

6320

F45-49

6320

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

19834

Females

7573

F45-49

7573

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17730

Females

6308

F45-49

6308

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

16315

Females

5622

F45-49

5622

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16251

Females

5642

F45-49

5642

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15632

Females

5354

F45-49

5354

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13729

Females

4353

F45-49

4353

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

15157

Females

5208

F45-49

5208

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13313

Females

4255

F45-49

4255

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13693

Females

4512

F45-49

4512

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13023

Females

4227

F45-49

4227

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13642

Females

4579

F45-49

4579

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

14286

Females

4898

F45-49

4898

Passing Analysis

Category:
Athletes Passed
2292
Passed By
1680
Net Change
+612
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16934
5K → 10K201488-287#16934#17221
10K → 15K124286-162#17221#17383
15K → 20K45743-698#17383#18081
20K → Half5114+37#18081#18044
Half → 25K34513+332#18044#17712
25K → 30K33041+289#17712#17423
30K → 20M17422+152#17423#17271
20M → 21M2147+207#17271#17064
21M → 35K9816+82#17064#16982
35K → 23M2138+205#16982#16777
23M → 24M1627+155#16777#16622
24M → 40K1448+136#16622#16486
40K → 25.2M777+70#16486#16416
25.2M → Finish11420+94#16416#16322
TOTALS22921680+612
📊

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