Boston Marathon logo
BOSTON MARATHON 2023

Alanna Mcmaster

Bib: 13129•F

AB

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
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
24:17
Rank: #12527
Start → 5K
24:17 | 7:49/mi
10K· 6.21 mi
48:34
Rank: #12866 (-339)
5K → 10K
24:17 | 7:49/mi
15K· 9.32 mi
1:13:18
Rank: #13278 (-412)
10K → 15K
24:44 | 7:58/mi
20K· 12.43 mi
1:38:33
Rank: #13545 (-267)
15K → 20K
25:15 | 8:08/mi
Half· 13.11 mi
1:44:09
Rank: #13667 (-122)
20K → Half
5:36 | 8:12/mi
25K· 15.53 mi
2:05:08
Rank: #14309 (-642)
Half → 25K
20:59 | 8:39/mi
30K· 18.64 mi
2:32:36
Rank: #14702 (-393)
25K → 30K
27:28 | 8:50/mi
20M
2:44:20
Rank: #14674 (+28)
30K → 20M
11:44 | 8:38/mi
21M
2:53:19
Rank: #14571 (+103)
20M → 21M
8:59 | 8:59/mi
35K· 21.75 mi
2:59:33
Rank: #14557 (+14)
21M → 35K
6:14 | 8:20/mi
23M
3:10:07
Rank: #14447 (+110)
35K → 23M
10:34 | 8:26/mi
24M
3:18:29
Rank: #14383 (+64)
23M → 24M
8:22 | 8:22/mi
40K· 24.85 mi
3:25:28
Rank: #14250 (+133)
24M → 40K
6:59 | 8:10/mi
25.2M
3:28:27
Rank: #14184 (+66)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:36:31
Rank: #14064 (+120)
25.2M → Finish
8:04 | 7:55/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
Time1:44:09
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:52:22
Pace8:34 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4324:177:4924:17
7:49
-
10K
6.21 mi11:17:0048:347:4924:17
7:49
0:00
15K
9.32 mi11:41:441:13:187:5224:44
7:58
+0:09
20K
12.43 mi12:06:591:38:337:5625:15
8:08
+0:10
Half
13.11 mi12:12:351:44:097:575:36
8:12
+0:04
25K
15.53 mi12:33:342:05:088:0320:59
8:39
+0:27
30K
18.64 mi13:01:022:32:368:1127:28
8:50
+0:11
20M
20.00 mi13:12:462:44:208:1311:44
8:38
-0:12
21M
21.00 mi13:21:452:53:198:158:59
8:59
+0:21
35K
21.75 mi13:27:592:59:338:156:14
8:20
-0:39
23M
23.00 mi13:38:333:10:078:1610:34
8:26
+0:06
24M
24.00 mi13:46:553:18:298:168:22
8:22
-0:04
40K
24.85 mi13:53:543:25:288:166:59
8:10
-0:12
25.2M
25.20 mi13:56:533:28:278:162:59
8:39
+0:29
Finish
26.22 mi14:04:573:36:318:168:04
7:55
-0:44

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

7:49 /mi

Average Pace

8:16 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:22

67% of race

Time at Steady Pace

1:12:09

33% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:15 /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 mi10:52:4324:177:4924:17
7:49
#12527
10K
6.21 mi11:17:0048:347:4924:17
7:49
#12866
15K
9.32 mi11:41:441:13:187:5224:44
7:58
#13278
20K
12.43 mi12:06:591:38:337:5625:15
8:08
#13545
Half
13.11 mi12:12:351:44:097:575:36
8:12
#13667
25K
15.53 mi12:33:342:05:088:0320:59
8:39
#14309
30K
18.64 mi13:01:022:32:368:1127:28
8:50
#14702
20M
20.00 mi13:12:462:44:208:1311:44
8:38
#14674
21M
21.00 mi13:21:452:53:198:158:59
8:59
#14571
35K
21.75 mi13:27:592:59:338:156:14
8:20
#14557
23M
23.00 mi13:38:333:10:078:1610:34
8:26
#14447
24M
24.00 mi13:46:553:18:298:168:22
8:22
#14383
40K
24.85 mi13:53:543:25:288:166:59
8:10
#14250
25.2M
25.20 mi13:56:533:28:278:162:59
8:39
#14184
Finish
26.22 mi14:04:573:36:318:168:04
7:55
#14064
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi125273180318014082(Top 53%)4132(Top 36%)4132(Top 85%)
10K6.21 mi3.10 mi12866-3393358-1783358-17813285(Top 50%)3603(Top 32%)3603(Top 74%)
15K9.32 mi3.11 mi13278-4123624-2663624-26614082(Top 53%)4132(Top 36%)4132(Top 85%)
20K12.43 mi3.11 mi13545-2673808-1843808-18414422(Top 54%)4358(Top 38%)4358(Top 89%)
Half13.11 mi0.68 mi13667-1223889-813889-8115869(Top 60%)5201(Top 46%)5201(Top 106%)
25K15.53 mi2.42 mi14309-6424289-4004289-40017131(Top 64%)6074(Top 53%)6074(Top 124%)
30K18.64 mi3.11 mi14702-3934556-2674556-26716316(Top 61%)5674(Top 50%)5674(Top 116%)
20M20.00 mi1.36 mi14674+284564-84564-814493(Top 54%)4695(Top 41%)4695(Top 96%)
21M21.00 mi1.00 mi14571+1034533+314533+3113345(Top 50%)4132(Top 36%)4132(Top 85%)
35K21.75 mi0.75 mi14557+144538-54538-514311(Top 54%)4728(Top 41%)4728(Top 97%)
23M23.00 mi1.25 mi14447+1104499+394499+3912879(Top 48%)4003(Top 35%)4003(Top 82%)
24M24.00 mi1.00 mi14383+644481+184481+1813665(Top 51%)4484(Top 39%)4484(Top 92%)
40K24.85 mi0.85 mi14250+1334423+584423+5811195(Top 42%)3265(Top 29%)3265(Top 67%)
25.2M25.20 mi0.35 mi14184+664396+274396+2710578(Top 40%)3004(Top 26%)3004(Top 62%)
Finish26.22 mi1.02 mi14064+1204339+574339+5711549(Top 43%)3479(Top 30%)3479(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

14082

Females

4132

F18-39

4132

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

13285

Females

3603

F18-39

3603

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

14082

Females

4132

F18-39

4132

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

14422

Females

4358

F18-39

4358

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

15869

Females

5201

F18-39

5201

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

17131

Females

6074

F18-39

6074

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

16316

Females

5674

F18-39

5674

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

14493

Females

4695

F18-39

4695

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

13345

Females

4132

F18-39

4132

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

14311

Females

4728

F18-39

4728

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12879

Females

4003

F18-39

4003

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

13665

Females

4484

F18-39

4484

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11195

Females

3265

F18-39

3265

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10578

Females

3004

F18-39

3004

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11549

Females

3479

F18-39

3479

Passing Analysis

Category:
Athletes Passed
1353
Passed By
2890
Net Change
-1537
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12527
5K → 10K164503-339#12527#12866
10K → 15K89501-412#12866#13278
15K → 20K111378-267#13278#13545
20K → Half5127-122#13545#13667
Half → 25K34676-642#13667#14309
25K → 30K78471-393#14309#14702
30K → 20M10173+28#14702#14674
20M → 21M13633+103#14674#14571
21M → 35K5036+14#14571#14557
35K → 23M13222+110#14557#14447
23M → 24M10440+64#14447#14383
24M → 40K1407+133#14383#14250
40K → 25.2M682+66#14250#14184
25.2M → Finish14121+120#14184#14064
TOTALS13532890-1537
📊

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