Boston Marathon logo
BOSTON MARATHON 2024

Kazumi Nio

Bib: 17887•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 47%
Gender (Female)
#0 / 10924
Top 35%
Masters (Masters Women)
#0 / 6263
Top 22%
Division (F50-54)
#0 / 1187
Top 15%
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
7:44/mi
24:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
47:44
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:11:37
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:36:25
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:41:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:16/mi
2:01:48
↑ 66↓ 880.2%
30K· 18.64 mi
8:54/mi
2:29:28
↑ 181↓ 1480.2%
20M
9:12/mi
2:41:58
↑ 64↓ 500.2%
21M
9:58/mi
2:51:56
↑ 106↓ 241.6%
35K· 21.75 mi
8:57/mi
2:58:38
↑ 17↓ 861.7%
23M
9:23/mi
3:10:23
↑ 23↓ 630.6%
24M
9:06/mi
3:19:29
↓ 821.3%
40K· 24.85 mi
9:20/mi
3:27:28
↓ 200.3%
25.2M
11:01/mi
3:31:16
↑ 13↓ 160.2%
Finish· 26.22 mi
9:13/mi
3:40:40
↑ 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
Time1:41:46
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time1:58:54
Pace9:04 /mi
📊Positive Split: 16.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4524:017:4424:01
7:44
-
10K
6.21 mi11:38:2847:447:4123:43
7:38
-0:06
15K
9.32 mi12:02:211:11:377:4123:53
7:41
+0:03
20K
12.43 mi12:27:091:36:257:4624:48
7:59
+0:18
Half
13.11 mi12:32:301:41:467:465:21
7:50
-0:09
25K
15.53 mi12:52:322:01:487:5020:02
8:16
+0:26
30K
18.64 mi13:20:122:29:288:0127:40
8:54
+0:38
20M
20.00 mi13:32:422:41:588:0612:30
9:12
+0:18
21M
21.00 mi13:42:402:51:568:119:58
9:58
+0:46
35K
21.75 mi13:49:222:58:388:136:42
8:57
-1:01
23M
23.00 mi14:01:073:10:238:1711:45
9:23
+0:26
24M
24.00 mi14:10:133:19:298:199:06
9:06
-0:17
40K
24.85 mi14:18:123:27:288:217:59
9:20
+0:14
25.2M
25.20 mi14:22:003:31:168:233:48
11:01
+1:41
Finish
26.22 mi14:31:243:40:408:259:24
9:13
-1:48

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

7:38 /mi

Average Pace

8:25 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:48

55% of race

Time at Steady Pace

1:25:06

39% of race

Time at Slower Pace

13:46

6% of race

Average Pace: 8:25 /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 mi11:14:4524:017:4424:01
7:44
#12554
10K
6.21 mi11:38:2847:447:4123:43
7:38
#11934
15K
9.32 mi12:02:211:11:377:4123:53
7:41
#11604
20K
12.43 mi12:27:091:36:257:4624:48
7:59
#11594
Half
13.11 mi12:32:301:41:467:465:21
7:50
#11579
25K
15.53 mi12:52:322:01:487:5020:02
8:16
#11564
30K
18.64 mi13:20:122:29:288:0127:40
8:54
#11800
20M
20.00 mi13:32:422:41:588:0612:30
9:12
#11875
21M
21.00 mi13:42:402:51:568:119:58
9:58
#11907
35K
21.75 mi13:49:222:58:388:136:42
8:57
#11949
23M
23.00 mi14:01:073:10:238:1711:45
9:23
#11973
24M
24.00 mi14:10:133:19:298:199:06
9:06
#11979
40K
24.85 mi14:18:123:27:288:217:59
9:20
#11979
25.2M
25.20 mi14:22:003:31:168:233:48
11:01
#12028
Finish
26.22 mi14:31:243:40:408:259:24
9:13
#12132
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi125543448344811116(Top 44%)2745(Top 25%)2745(Top 231%)
10K6.21 mi3.10 mi11934+6203135+3133135+31311354(Top 44%)2844(Top 26%)2844(Top 240%)
15K9.32 mi3.11 mi11604+3302982+1532982+15311116(Top 44%)2745(Top 25%)2745(Top 231%)
20K12.43 mi3.11 mi11594+102996-142996-1411716(Top 46%)3170(Top 29%)3170(Top 267%)
Half13.11 mi0.68 mi11579+152987+92987+911712(Top 46%)3193(Top 29%)3193(Top 269%)
25K15.53 mi2.42 mi11564+153018-313018-3111776(Top 46%)3389(Top 31%)3389(Top 286%)
30K18.64 mi3.11 mi11800-2363234-2163234-21612775(Top 50%)4156(Top 38%)4156(Top 350%)
20M20.00 mi1.36 mi11875-753338-1043338-10413139(Top 51%)4639(Top 42%)4639(Top 391%)
21M21.00 mi1.00 mi11907-323417-793417-7912850(Top 50%)4708(Top 43%)4708(Top 397%)
35K21.75 mi0.75 mi11949-423475-583475-5813098(Top 51%)4851(Top 44%)4851(Top 409%)
23M23.00 mi1.25 mi11973-243557-823557-8213011(Top 51%)4910(Top 45%)4910(Top 414%)
24M24.00 mi1.00 mi11979-63611-543611-5412658(Top 50%)4743(Top 43%)4743(Top 400%)
40K24.85 mi0.85 mi119793661-503661-5012435(Top 49%)4742(Top 43%)4742(Top 399%)
25.2M25.20 mi0.35 mi12028-493702-413702-4114566(Top 57%)5811(Top 53%)5811(Top 490%)
Finish26.22 mi1.02 mi12132-1043790-883790-8815258(Top 60%)6119(Top 56%)6119(Top 516%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11116

Females

2745

F50-54

2745

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

11354

Females

2844

F50-54

2844

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11116

Females

2745

F50-54

2745

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

11716

Females

3170

F50-54

3170

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

11712

Females

3193

F50-54

3193

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

11776

Females

3389

F50-54

3389

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

12775

Females

4156

F50-54

4156

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13139

Females

4639

F50-54

4639

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

12850

Females

4708

F50-54

4708

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

13098

Females

4851

F50-54

4851

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13011

Females

4910

F50-54

4910

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

12658

Females

4743

F50-54

4743

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

12435

Females

4742

F50-54

4742

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

14566

Females

5811

F50-54

5811

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15258

Females

6119

F50-54

6119

Passing Analysis

Category:
Athletes Passed
2536
Passed By
2114
Net Change
+422
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12554
5K → 10K70585+620#12554#11934
10K → 15K41282+330#11934#11604
15K → 20K240230+10#11604#11594
20K → Half4833+15#11594#11579
Half → 25K219204+15#11579#11564
25K → 30K215451-236#11564#11800
30K → 20M125200-75#11800#11875
20M → 21M129161-32#11875#11907
21M → 35K58100-42#11907#11949
35K → 23M131155-24#11949#11973
23M → 24M9197-6#11973#11979
24M → 40K92920#11979#11979
40K → 25.2M2776-49#11979#12028
25.2M → Finish44148-104#12028#12132
TOTALS25362114+422
📊

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