Boston Marathon logo
BOSTON MARATHON 2024

Mhairi Smith

Bib: 18051•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 49%
Gender (Female)
#0 / 10924
Top 37%
Masters (Masters Women)
#0 / 6263
Top 25%
Division (F45-49)
#0 / 1753
Top 30%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
8:13/mi
25:31
↑ 97↓ 3451.5%
10K· 6.21 mi
8:12/mi
50:59
↑ 79↓ 1380.4%
15K· 9.32 mi
8:05/mi
1:16:07
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:41:51
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:47:21
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:07:53
↑ 66↓ 880.2%
30K· 18.64 mi
8:48/mi
2:35:14
↑ 181↓ 1480.2%
20M
8:47/mi
2:47:10
↑ 64↓ 500.2%
21M
9:31/mi
2:56:41
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
3:02:56
↑ 17↓ 861.7%
23M
8:36/mi
3:13:42
↑ 23↓ 630.6%
24M
8:33/mi
3:22:15
↓ 821.3%
40K· 24.85 mi
8:52/mi
3:29:50
↓ 200.3%
25.2M
10:12/mi
3:33:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:48/mi
3:42:19
↑ 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
Time1:47:21
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:54:58
Pace8:46 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2325:318:1325:31
8:13
-
10K
6.21 mi11:43:5150:598:1225:28
8:12
-0:01
15K
9.32 mi12:08:591:16:078:1025:08
8:05
-0:07
20K
12.43 mi12:34:431:41:518:1225:44
8:17
+0:12
Half
13.11 mi12:40:131:47:218:115:30
8:04
-0:13
25K
15.53 mi13:00:452:07:538:1420:32
8:28
+0:24
30K
18.64 mi13:28:062:35:148:2027:21
8:48
+0:20
20M
20.00 mi13:40:022:47:108:2111:56
8:47
-0:01
21M
21.00 mi13:49:332:56:418:259:31
9:31
+0:44
35K
21.75 mi13:55:483:02:568:256:15
8:21
-1:10
23M
23.00 mi14:06:343:13:428:2510:46
8:36
+0:15
24M
24.00 mi14:15:073:22:158:268:33
8:33
-0:03
40K
24.85 mi14:22:423:29:508:277:35
8:52
+0:19
25.2M
25.20 mi14:26:133:33:218:283:31
10:12
+1:20
Finish
26.22 mi14:35:113:42:198:298:58
8:48
-1:24

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

8:04 /mi

Average Pace

8:29 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:37

37% of race

Time at Steady Pace

2:00:05

54% of race

Time at Slower Pace

20:37

9% of race

Average Pace: 8:29 /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 mi11:18:2325:318:1325:31
8:13
#16106
10K
6.21 mi11:43:5150:598:1225:28
8:12
#15783
15K
9.32 mi12:08:591:16:078:1025:08
8:05
#15146
20K
12.43 mi12:34:431:41:518:1225:44
8:17
#14699
Half
13.11 mi12:40:131:47:218:115:30
8:04
#14608
25K
15.53 mi13:00:452:07:538:1420:32
8:28
#14246
30K
18.64 mi13:28:062:35:148:2027:21
8:48
#13775
20M
20.00 mi13:40:022:47:108:2111:56
8:47
#13513
21M
21.00 mi13:49:332:56:418:259:31
9:31
#13295
35K
21.75 mi13:55:483:02:568:256:15
8:21
#13134
23M
23.00 mi14:06:343:13:428:2510:46
8:36
#12851
24M
24.00 mi14:15:073:22:158:268:33
8:33
#12673
40K
24.85 mi14:22:423:29:508:277:35
8:52
#12526
25.2M
25.20 mi14:26:133:33:218:283:31
10:12
#12496
Finish
26.22 mi14:35:113:42:198:298:58
8:48
#12501
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi161065619561914043(Top 55%)4388(Top 40%)4388(Top 250%)
10K6.21 mi3.10 mi15783+3235400+2195400+21915520(Top 61%)5227(Top 48%)5227(Top 298%)
15K9.32 mi3.11 mi15146+6375036+3645036+36414043(Top 55%)4388(Top 40%)4388(Top 250%)
20K12.43 mi3.11 mi14699+4474777+2594777+25913622(Top 53%)4196(Top 38%)4196(Top 239%)
Half13.11 mi0.68 mi14608+914733+444733+4413199(Top 52%)4013(Top 37%)4013(Top 229%)
25K15.53 mi2.42 mi14246+3624540+1934540+19312894(Top 50%)3982(Top 36%)3982(Top 227%)
30K18.64 mi3.11 mi13775+4714351+1894351+18912215(Top 48%)3845(Top 35%)3845(Top 219%)
20M20.00 mi1.36 mi13513+2624272+794272+7910999(Top 43%)3472(Top 32%)3472(Top 198%)
21M21.00 mi1.00 mi13295+2184204+684204+6810929(Top 43%)3712(Top 34%)3712(Top 212%)
35K21.75 mi0.75 mi13134+1614149+554149+559935(Top 39%)3201(Top 29%)3201(Top 183%)
23M23.00 mi1.25 mi12851+2834046+1034046+1039035(Top 35%)2898(Top 27%)2898(Top 165%)
24M24.00 mi1.00 mi12673+1783993+533993+539777(Top 38%)3328(Top 30%)3328(Top 190%)
40K24.85 mi0.85 mi12526+1473957+363957+3610261(Top 40%)3695(Top 34%)3695(Top 211%)
25.2M25.20 mi0.35 mi12496+303962-53962-511747(Top 46%)4457(Top 41%)4457(Top 254%)
Finish26.22 mi1.02 mi12501-54006-444006-4413173(Top 52%)5050(Top 46%)5050(Top 288%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14043

Females

4388

F45-49

4388

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

15520

Females

5227

F45-49

5227

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14043

Females

4388

F45-49

4388

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

13622

Females

4196

F45-49

4196

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13199

Females

4013

F45-49

4013

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

12894

Females

3982

F45-49

3982

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12215

Females

3845

F45-49

3845

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

10999

Females

3472

F45-49

3472

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

10929

Females

3712

F45-49

3712

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

9935

Females

3201

F45-49

3201

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9035

Females

2898

F45-49

2898

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

9777

Females

3328

F45-49

3328

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10261

Females

3695

F45-49

3695

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

11747

Females

4457

F45-49

4457

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13173

Females

5050

F45-49

5050

Passing Analysis

Category:
Athletes Passed
4163
Passed By
558
Net Change
+3605
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16106
5K → 10K465142+323#16106#15783
10K → 15K65922+637#15783#15146
15K → 20K48841+447#15146#14699
20K → Half1009+91#14699#14608
Half → 25K40745+362#14608#14246
25K → 30K53867+471#14246#13775
30K → 20M28220+262#13775#13513
20M → 21M25234+218#13513#13295
21M → 35K1698+161#13295#13134
35K → 23M30118+283#13134#12851
23M → 24M19416+178#12851#12673
24M → 40K16821+147#12673#12526
40K → 25.2M6232+30#12526#12496
25.2M → Finish7883-5#12496#12501
TOTALS4163558+3605
📊

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