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BOSTON MARATHON 2025

Kathryn Zioto

Bib: 7478•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 11%
Gender (Female)
#0 / 12228
Top 1%
Division (F18-39)
#0 / 5469
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:51
Rank: #5558
Start → 5K
20:51 | 6:43/mi
10K· 6.21 mi
41:35
Rank: #5300 (+258)
5K → 10K
20:44 | 6:40/mi
15K· 9.32 mi
1:02:04
Rank: #4870 (+430)
10K → 15K
20:29 | 6:36/mi
20K· 12.43 mi
1:22:38
Rank: #4549 (+321)
15K → 20K
20:34 | 6:37/mi
Half· 13.11 mi
1:27:08
Rank: #4541 (+8)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:43:14
Rank: #4333 (+208)
Half → 25K
16:06 | 6:38/mi
30K· 18.64 mi
2:04:03
Rank: #3977 (+356)
25K → 30K
20:49 | 6:42/mi
20M
2:13:10
Rank: #3829 (+148)
30K → 20M
9:07 | 6:43/mi
21M
2:20:06
Rank: #3681 (+148)
20M → 21M
6:56 | 6:56/mi
35K· 21.75 mi
2:24:57
Rank: #3605 (+76)
21M → 35K
4:51 | 6:29/mi
23M
2:33:18
Rank: #3441 (+164)
35K → 23M
8:21 | 6:40/mi
24M
2:39:46
Rank: #3321 (+120)
23M → 24M
6:28 | 6:28/mi
40K· 24.85 mi
2:45:24
Rank: #3227 (+94)
24M → 40K
5:38 | 6:35/mi
25.2M
2:47:51
Rank: #3177 (+50)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:54:13
Rank: #3038 (+139)
25.2M → Finish
6:22 | 6:15/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:27:08
Pace6:39 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:05
Pace6:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:2220:516:4320:51
6:43
-
10K
6.21 mi10:48:0641:356:4220:44
6:40
-0:03
15K
9.32 mi11:08:351:02:046:4020:29
6:36
-0:04
20K
12.43 mi11:29:091:22:386:3920:34
6:37
+0:01
Half
13.11 mi11:33:391:27:086:394:30
6:36
-0:01
25K
15.53 mi11:49:451:43:146:3916:06
6:38
+0:02
30K
18.64 mi12:10:342:04:036:3920:49
6:42
+0:04
20M
20.00 mi12:19:412:13:106:399:07
6:43
+0:01
21M
21.00 mi12:26:372:20:066:406:56
6:56
+0:13
35K
21.75 mi12:31:282:24:576:404:51
6:29
-0:27
23M
23.00 mi12:39:492:33:186:408:21
6:40
+0:11
24M
24.00 mi12:46:172:39:466:396:28
6:28
-0:12
40K
24.85 mi12:51:552:45:246:395:38
6:35
+0:07
25.2M
25.20 mi12:54:222:47:516:402:27
7:06
+0:31
Finish
26.22 mi13:00:442:54:136:396:22
6:15
-0:51

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

6:15 /mi

Average Pace

6:39 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:50

95% of race

Time at Steady Pace

9:23

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:39 /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 mi10:27:2220:516:4320:51
6:43
#5558
10K
6.21 mi10:48:0641:356:4220:44
6:40
#5300
15K
9.32 mi11:08:351:02:046:4020:29
6:36
#4870
20K
12.43 mi11:29:091:22:386:3920:34
6:37
#4549
Half
13.11 mi11:33:391:27:086:394:30
6:36
#4541
25K
15.53 mi11:49:451:43:146:3916:06
6:38
#4333
30K
18.64 mi12:10:342:04:036:3920:49
6:42
#3977
20M
20.00 mi12:19:412:13:106:399:07
6:43
#3829
21M
21.00 mi12:26:372:20:066:406:56
6:56
#3681
35K
21.75 mi12:31:282:24:576:404:51
6:29
#3605
23M
23.00 mi12:39:492:33:186:408:21
6:40
#3441
24M
24.00 mi12:46:172:39:466:396:28
6:28
#3321
40K
24.85 mi12:51:552:45:246:395:38
6:35
#3227
25.2M
25.20 mi12:54:222:47:516:402:27
7:06
#3177
Finish
26.22 mi13:00:442:54:136:396:22
6:15
#3038
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi55584004004190(Top 15%)241(Top 2%)241(Top 4%)
10K6.21 mi3.10 mi5300+258372+28372+285122(Top 18%)341(Top 3%)341(Top 6%)
15K9.32 mi3.11 mi4870+430311+61311+614190(Top 15%)241(Top 2%)241(Top 4%)
20K12.43 mi3.11 mi4549+321280+31280+313843(Top 14%)210(Top 2%)210(Top 4%)
Half13.11 mi0.68 mi4541+82802804448(Top 16%)267(Top 2%)267(Top 5%)
25K15.53 mi2.42 mi4333+208261+19261+193744(Top 13%)217(Top 2%)217(Top 4%)
30K18.64 mi3.11 mi3977+356229+32229+322897(Top 10%)157(Top 1%)157(Top 3%)
20M20.00 mi1.36 mi3829+148216+13216+132527(Top 9%)141(Top 1%)141(Top 3%)
21M21.00 mi1.00 mi3681+148210+6210+62029(Top 7%)115(Top 0.9%)115(Top 2%)
35K21.75 mi0.75 mi3605+76206+4206+42434(Top 9%)153(Top 1%)153(Top 3%)
23M23.00 mi1.25 mi3441+164192+14192+142140(Top 8%)131(Top 1%)131(Top 2%)
24M24.00 mi1.00 mi3321+120187+5187+51938(Top 7%)133(Top 1%)133(Top 2%)
40K24.85 mi0.85 mi3227+94178+9178+91960(Top 7%)144(Top 1%)144(Top 3%)
25.2M25.20 mi0.35 mi3177+501781781866(Top 7%)159(Top 1%)159(Top 3%)
Finish26.22 mi1.02 mi3038+139166+12166+121719(Top 6%)119(Top 1.0%)119(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4190

Females

241

F18-39

241

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5122

Females

341

F18-39

341

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4190

Females

241

F18-39

241

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3843

Females

210

F18-39

210

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4448

Females

267

F18-39

267

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3744

Females

217

F18-39

217

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2897

Females

157

F18-39

157

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2527

Females

141

F18-39

141

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

2029

Females

115

F18-39

115

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2434

Females

153

F18-39

153

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2140

Females

131

F18-39

131

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1938

Females

133

F18-39

133

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1960

Females

144

F18-39

144

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1866

Females

159

F18-39

159

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1719

Females

119

F18-39

119

Passing Analysis

Category:
Athletes Passed
2698
Passed By
178
Net Change
+2520
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5558
5K → 10K34082+258#5558#5300
10K → 15K44616+430#5300#4870
15K → 20K33211+321#4870#4549
20K → Half2214+8#4549#4541
Half → 25K22113+208#4541#4333
25K → 30K36711+356#4333#3977
30K → 20M1535+148#3977#3829
20M → 21M1502+148#3829#3681
21M → 35K826+76#3681#3605
35K → 23M1673+164#3605#3441
23M → 24M1255+120#3441#3321
24M → 40K995+94#3321#3227
40K → 25.2M522+50#3227#3177
25.2M → Finish1423+139#3177#3038
TOTALS2698178+2520
📊

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