Boston Marathon logo
BOSTON MARATHON 2023

Dana Mcafoos

Bib: 14323•F

TX

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Division (F18-39)
#0 / 4884
Top 26%
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
7:47/mi
24:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:27/mi
47:21
↑ 79↓ 1380.4%
15K· 9.32 mi
7:31/mi
1:10:41
↑ 67↓ 78
20K· 12.43 mi
7:36/mi
1:34:19
↑ 106↓ 860.1%
Half· 13.11 mi
7:29/mi
1:39:25
↑ 19↓ 370.5%
25K· 15.53 mi
7:30/mi
1:57:37
↑ 66↓ 880.2%
30K· 18.64 mi
7:37/mi
2:21:16
↑ 181↓ 1480.2%
20M
7:38/mi
2:31:39
↑ 64↓ 500.2%
21M
8:04/mi
2:39:43
↑ 106↓ 241.6%
35K· 21.75 mi
7:26/mi
2:45:17
↑ 17↓ 861.7%
23M
7:50/mi
2:55:05
↑ 23↓ 630.6%
24M
7:40/mi
3:02:45
↓ 821.3%
40K· 24.85 mi
7:35/mi
3:09:14
↓ 200.3%
25.2M
8:01/mi
3:12:00
↑ 13↓ 160.2%
Finish· 26.22 mi
7:02/mi
3:19:10
↑ 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
Time1:39:25
Pace7:35 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:39:45
Pace7:37 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0424:117:4724:11
7:47
-
10K
6.21 mi11:39:1447:217:3723:10
7:27
-0:20
15K
9.32 mi12:02:341:10:417:3523:20
7:31
+0:04
20K
12.43 mi12:26:121:34:197:3523:38
7:36
+0:05
Half
13.11 mi12:31:181:39:257:355:06
7:29
-0:07
25K
15.53 mi12:49:301:57:377:3418:12
7:30
+0:01
30K
18.64 mi13:13:092:21:167:3523:39
7:37
+0:07
20M
20.00 mi13:23:322:31:397:3510:23
7:38
+0:01
21M
21.00 mi13:31:362:39:437:368:04
8:04
+0:26
35K
21.75 mi13:37:102:45:177:365:34
7:26
-0:38
23M
23.00 mi13:46:582:55:057:379:48
7:50
+0:24
24M
24.00 mi13:54:383:02:457:377:40
7:40
-0:10
40K
24.85 mi14:01:073:09:147:376:29
7:35
-0:05
25.2M
25.20 mi14:03:533:12:007:372:46
8:01
+0:26
Finish
26.22 mi14:11:033:19:107:367:10
7:02
-0:59

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

7:02 /mi

Average Pace

7:36 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:21

77% of race

Time at Steady Pace

44:49

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:36 /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 mi11:16:0424:117:4724:11
7:47
#12209
10K
6.21 mi11:39:1447:217:3723:10
7:27
#11104
15K
9.32 mi12:02:341:10:417:3523:20
7:31
#10793
20K
12.43 mi12:26:121:34:197:3523:38
7:36
#10614
Half
13.11 mi12:31:181:39:257:355:06
7:29
#10576
25K
15.53 mi12:49:301:57:377:3418:12
7:30
#10241
30K
18.64 mi13:13:092:21:167:3523:39
7:37
#9808
20M
20.00 mi13:23:322:31:397:3510:23
7:38
#9619
21M
21.00 mi13:31:362:39:437:368:04
8:04
#9479
35K
21.75 mi13:37:102:45:177:365:34
7:26
#9399
23M
23.00 mi13:46:582:55:057:379:48
7:50
#9301
24M
24.00 mi13:54:383:02:457:377:40
7:40
#9255
40K
24.85 mi14:01:073:09:147:376:29
7:35
#9157
25.2M
25.20 mi14:03:533:12:007:372:46
8:01
#9122
Finish
26.22 mi14:11:033:19:107:367:10
7:02
#8935
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi122092977297710267(Top 39%)1965(Top 17%)1965(Top 40%)
10K6.21 mi3.10 mi11104+11052379+5982379+59810133(Top 38%)1881(Top 16%)1881(Top 39%)
15K9.32 mi3.11 mi10793+3112230+1492230+14910267(Top 39%)1965(Top 17%)1965(Top 40%)
20K12.43 mi3.11 mi10614+1792134+962134+9610145(Top 38%)1979(Top 17%)1979(Top 41%)
Half13.11 mi0.68 mi10576+382105+292105+2910061(Top 38%)1897(Top 17%)1897(Top 39%)
25K15.53 mi2.42 mi10241+3351967+1381967+1388854(Top 33%)1505(Top 13%)1505(Top 31%)
30K18.64 mi3.11 mi9808+4331804+1631804+1638033(Top 30%)1327(Top 12%)1327(Top 27%)
20M20.00 mi1.36 mi9619+1891760+441760+447785(Top 29%)1321(Top 12%)1321(Top 27%)
21M21.00 mi1.00 mi9479+1401723+371723+377820(Top 29%)1435(Top 13%)1435(Top 29%)
35K21.75 mi0.75 mi9399+801711+121711+128143(Top 31%)1561(Top 14%)1561(Top 32%)
23M23.00 mi1.25 mi9301+981695+161695+168617(Top 32%)1844(Top 16%)1844(Top 38%)
24M24.00 mi1.00 mi9255+461699-41699-48872(Top 33%)2034(Top 18%)2034(Top 42%)
40K24.85 mi0.85 mi9157+981680+191680+197250(Top 27%)1469(Top 13%)1469(Top 30%)
25.2M25.20 mi0.35 mi9122+351672+81672+86738(Top 25%)1324(Top 12%)1324(Top 27%)
Finish26.22 mi1.02 mi8935+1871612+601612+605443(Top 20%)890(Top 8%)890(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10267

Females

1965

F18-39

1965

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10133

Females

1881

F18-39

1881

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10267

Females

1965

F18-39

1965

15K→20K

9.3 - 12.4 mi

Top 38%
×5story building
+106ft-86ft

Overall

10145

Females

1979

F18-39

1979

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10061

Females

1897

F18-39

1897

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

8854

Females

1505

F18-39

1505

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8033

Females

1327

F18-39

1327

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7785

Females

1321

F18-39

1321

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7820

Females

1435

F18-39

1435

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8143

Females

1561

F18-39

1561

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8617

Females

1844

F18-39

1844

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

8872

Females

2034

F18-39

2034

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7250

Females

1469

F18-39

1469

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6738

Females

1324

F18-39

1324

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5443

Females

890

F18-39

890

Passing Analysis

Category:
Athletes Passed
3629*
Passed By
355
Net Change
+3274
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12209
5K → 10K115146+1105#12209#11104
10K → 15K36655+311#11104#10793
15K → 20K25879+179#10793#10614
20K → Half5820+38#10614#10576
Half → 25K3427+335#10576#10241
25K → 30K447*14+433#10241#9808
30K → 20M20011+189#9808#9619
20M → 21M15111+140#9619#9479
21M → 35K9616+80#9479#9399
35K → 23M13133+98#9399#9301
23M → 24M8337+46#9301#9255
24M → 40K11315+98#9255#9157
40K → 25.2M416+35#9157#9122
25.2M → Finish1925+187#9122#8935
TOTALS3629*355+3274

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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