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BOSTON MARATHON 2023

Tammy Matsunami

Bib: 19155•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 34%
Masters (Masters Women)
#0 / 6539
Top 21%
Division (F60-64)
#0 / 527
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:36
Rank: #15726
Start → 5K
25:36 | 8:14/mi
10K· 6.21 mi
50:41
Rank: #15507 (+219)
5K → 10K
25:05 | 8:04/mi
15K· 9.32 mi
1:15:56
Rank: #15470 (+37)
10K → 15K
25:15 | 8:08/mi
20K· 12.43 mi
1:41:18
Rank: #15264 (+206)
15K → 20K
25:22 | 8:10/mi
Half· 13.11 mi
1:46:48
Rank: #15227 (+37)
20K → Half
5:30 | 8:04/mi
25K· 15.53 mi
2:06:38
Rank: #15004 (+223)
Half → 25K
19:50 | 8:11/mi
30K· 18.64 mi
2:32:24
Rank: #14629 (+375)
25K → 30K
25:46 | 8:18/mi
20M
2:43:41
Rank: #14441 (+188)
30K → 20M
11:17 | 8:18/mi
21M
2:52:18
Rank: #14253 (+188)
20M → 21M
8:37 | 8:37/mi
35K· 21.75 mi
2:58:12
Rank: #14120 (+133)
21M → 35K
5:54 | 7:53/mi
23M
3:08:22
Rank: #13883 (+237)
35K → 23M
10:10 | 8:07/mi
24M
3:16:14
Rank: #13707 (+176)
23M → 24M
7:52 | 7:52/mi
40K· 24.85 mi
3:23:04
Rank: #13542 (+165)
24M → 40K
6:50 | 8:00/mi
25.2M
3:26:03
Rank: #13466 (+76)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:34:06
Rank: #13367 (+99)
25.2M → Finish
8:03 | 7:54/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:46:48
Pace8:09 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:47:18
Pace8:11 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0225:368:1425:36
8:14
-
10K
6.21 mi11:43:0750:418:0925:05
8:04
-0:10
15K
9.32 mi12:08:221:15:568:0925:15
8:08
+0:04
20K
12.43 mi12:33:441:41:188:0925:22
8:10
+0:02
Half
13.11 mi12:39:141:46:488:095:30
8:04
-0:06
25K
15.53 mi12:59:042:06:388:0919:50
8:11
+0:07
30K
18.64 mi13:24:502:32:248:1125:46
8:18
+0:07
20M
20.00 mi13:36:072:43:418:1111:17
8:18
0:00
21M
21.00 mi13:44:442:52:188:128:37
8:37
+0:19
35K
21.75 mi13:50:382:58:128:125:54
7:53
-0:44
23M
23.00 mi14:00:483:08:228:1110:10
8:07
+0:14
24M
24.00 mi14:08:403:16:148:117:52
7:52
-0:15
40K
24.85 mi14:15:303:23:048:106:50
8:00
+0:08
25.2M
25.20 mi14:18:293:26:038:112:59
8:39
+0:39
Finish
26.22 mi14:26:323:34:068:108:03
7:54
-0:45

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

7:52 /mi

Average Pace

8:10 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:27

77% of race

Time at Steady Pace

48:39

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:10 /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 mi11:18:0225:368:1425:36
8:14
#15726
10K
6.21 mi11:43:0750:418:0925:05
8:04
#15507
15K
9.32 mi12:08:221:15:568:0925:15
8:08
#15470
20K
12.43 mi12:33:441:41:188:0925:22
8:10
#15264
Half
13.11 mi12:39:141:46:488:095:30
8:04
#15227
25K
15.53 mi12:59:042:06:388:0919:50
8:11
#15004
30K
18.64 mi13:24:502:32:248:1125:46
8:18
#14629
20M
20.00 mi13:36:072:43:418:1111:17
8:18
#14441
21M
21.00 mi13:44:442:52:188:128:37
8:37
#14253
35K
21.75 mi13:50:382:58:128:125:54
7:53
#14120
23M
23.00 mi14:00:483:08:228:1110:10
8:07
#13883
24M
24.00 mi14:08:403:16:148:117:52
7:52
#13707
40K
24.85 mi14:15:303:23:048:106:50
8:00
#13542
25.2M
25.20 mi14:18:293:26:038:112:59
8:39
#13466
Finish
26.22 mi14:26:323:34:068:108:03
7:54
#13367
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi157265106510615344(Top 58%)4873(Top 43%)4873(Top 925%)
10K6.21 mi3.10 mi15507+2194972+1344972+13415331(Top 58%)4869(Top 43%)4869(Top 924%)
15K9.32 mi3.11 mi15470+374959+134959+1315344(Top 58%)4873(Top 43%)4873(Top 925%)
20K12.43 mi3.11 mi15264+2064847+1124847+11214707(Top 55%)4528(Top 40%)4528(Top 859%)
Half13.11 mi0.68 mi15227+374827+204827+2014862(Top 56%)4582(Top 40%)4582(Top 869%)
25K15.53 mi2.42 mi15004+2234712+1154712+11514101(Top 53%)4285(Top 38%)4285(Top 813%)
30K18.64 mi3.11 mi14629+3754513+1994513+19913004(Top 49%)3763(Top 33%)3763(Top 714%)
20M20.00 mi1.36 mi14441+1884442+714442+7112415(Top 47%)3533(Top 31%)3533(Top 670%)
21M21.00 mi1.00 mi14253+1884348+944348+9411201(Top 42%)2983(Top 26%)2983(Top 566%)
35K21.75 mi0.75 mi14120+1334279+694279+6911366(Top 43%)3073(Top 27%)3073(Top 583%)
23M23.00 mi1.25 mi13883+2374153+1264153+12610649(Top 40%)2852(Top 25%)2852(Top 541%)
24M24.00 mi1.00 mi13707+1764071+824071+8210332(Top 39%)2764(Top 24%)2764(Top 524%)
40K24.85 mi0.85 mi13542+1653984+873984+8710056(Top 38%)2693(Top 24%)2693(Top 511%)
25.2M25.20 mi0.35 mi13466+763954+303954+3010560(Top 40%)2986(Top 26%)2986(Top 567%)
Finish26.22 mi1.02 mi13367+993913+413913+4111428(Top 43%)3416(Top 30%)3416(Top 648%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

15344

Females

4873

F60-64

4873

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

15331

Females

4869

F60-64

4869

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

15344

Females

4873

F60-64

4873

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

14707

Females

4528

F60-64

4528

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

14862

Females

4582

F60-64

4582

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14101

Females

4285

F60-64

4285

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13004

Females

3763

F60-64

3763

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12415

Females

3533

F60-64

3533

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11201

Females

2983

F60-64

2983

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11366

Females

3073

F60-64

3073

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10649

Females

2852

F60-64

2852

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10332

Females

2764

F60-64

2764

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10056

Females

2693

F60-64

2693

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10560

Females

2986

F60-64

2986

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11428

Females

3416

F60-64

3416

Passing Analysis

Category:
Athletes Passed
2945
Passed By
586
Net Change
+2359
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15726
5K → 10K413194+219#15726#15507
10K → 15K201164+37#15507#15470
15K → 20K27973+206#15470#15264
20K → Half5417+37#15264#15227
Half → 25K26037+223#15227#15004
25K → 30K40126+375#15004#14629
30K → 20M19911+188#14629#14441
20M → 21M19810+188#14441#14253
21M → 35K1363+133#14253#14120
35K → 23M2425+237#14120#13883
23M → 24M1848+176#13883#13707
24M → 40K1716+165#13707#13542
40K → 25.2M804+76#13542#13466
25.2M → Finish12728+99#13466#13367
TOTALS2945586+2359
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing