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BOSTON MARATHON 2025

Kelsi Chappell

Bib: 3610•F

RI

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Female)
#0 / 12228
Top 0.5%
Division (F18-39)
#0 / 5469
Top 0.9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:14
Rank: #1822
Start → 5K
19:14 | 6:11/mi
10K· 6.21 mi
38:22
Rank: #1761 (+61)
5K → 10K
19:08 | 6:10/mi
15K· 9.32 mi
57:27
Rank: #1673 (+88)
10K → 15K
19:05 | 6:09/mi
20K· 12.43 mi
1:16:31
Rank: #1564 (+109)
15K → 20K
19:04 | 6:08/mi
Half· 13.11 mi
1:20:39
Rank: #1547 (+17)
20K → Half
4:08 | 6:03/mi
25K· 15.53 mi
1:35:26
Rank: #1449 (+98)
Half → 25K
14:47 | 6:06/mi
30K· 18.64 mi
1:54:46
Rank: #1324 (+125)
25K → 30K
19:20 | 6:13/mi
20M
2:03:22
Rank: #1285 (+39)
30K → 20M
8:36 | 6:20/mi
21M
2:10:13
Rank: #1274 (+11)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:14:50
Rank: #1247 (+27)
21M → 35K
4:37 | 6:10/mi
23M
2:22:49
Rank: #1206 (+41)
35K → 23M
7:59 | 6:23/mi
24M
2:29:07
Rank: #1191 (+15)
23M → 24M
6:18 | 6:18/mi
40K· 24.85 mi
2:34:36
Rank: #1169 (+22)
24M → 40K
5:29 | 6:25/mi
25.2M
2:37:01
Rank: #1169
40K → 25.2M
2:25 | 7:00/mi
Finish· 26.22 mi
2:43:15
Rank: #1149 (+20)
25.2M → Finish
6:14 | 6:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:39
Pace6:09 /mi
2nd Half
Distance13.11 mi
Time1:22:36
Pace6:18 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1519:146:1119:14
6:11
-
10K
6.21 mi10:40:2338:226:1019:08
6:10
-0:01
15K
9.32 mi10:59:2857:276:1019:05
6:09
-0:01
20K
12.43 mi11:18:321:16:316:0919:04
6:08
-0:01
Half
13.11 mi11:22:401:20:396:094:08
6:03
-0:05
25K
15.53 mi11:37:271:35:266:0914:47
6:06
+0:03
30K
18.64 mi11:56:471:54:466:0919:20
6:13
+0:07
20M
20.00 mi12:05:232:03:226:108:36
6:20
+0:07
21M
21.00 mi12:12:142:10:136:126:51
6:51
+0:31
35K
21.75 mi12:16:512:14:506:124:37
6:10
-0:41
23M
23.00 mi12:24:502:22:496:137:59
6:23
+0:13
24M
24.00 mi12:31:082:29:076:136:18
6:18
-0:05
40K
24.85 mi12:36:372:34:366:135:29
6:25
+0:07
25.2M
25.20 mi12:39:022:37:016:142:25
7:00
+0:35
Finish
26.22 mi12:45:162:43:156:146:14
6:07
-0:53

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

6:03 /mi

Average Pace

6:14 /mi

Slowest Pace

7:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:59

94% of race

Time at Steady Pace

9:16

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:14 /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 mi10:21:1519:146:1119:14
6:11
#1822
10K
6.21 mi10:40:2338:226:1019:08
6:10
#1761
15K
9.32 mi10:59:2857:276:1019:05
6:09
#1673
20K
12.43 mi11:18:321:16:316:0919:04
6:08
#1564
Half
13.11 mi11:22:401:20:396:094:08
6:03
#1547
25K
15.53 mi11:37:271:35:266:0914:47
6:06
#1449
30K
18.64 mi11:56:471:54:466:0919:20
6:13
#1324
20M
20.00 mi12:05:232:03:226:108:36
6:20
#1285
21M
21.00 mi12:12:142:10:136:126:51
6:51
#1274
35K
21.75 mi12:16:512:14:506:124:37
6:10
#1247
23M
23.00 mi12:24:502:22:496:137:59
6:23
#1206
24M
24.00 mi12:31:082:29:076:136:18
6:18
#1191
40K
24.85 mi12:36:372:34:366:135:29
6:25
#1169
25.2M
25.20 mi12:39:022:37:016:142:25
7:00
#1169
Finish
26.22 mi12:45:162:43:156:146:14
6:07
#1149
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi182284841583(Top 6%)73(Top 0.6%)73(Top 1%)
10K6.21 mi3.10 mi1761+6181+381+31725(Top 6%)77(Top 0.6%)77(Top 1%)
15K9.32 mi3.11 mi1673+8876+576+51583(Top 6%)73(Top 0.6%)73(Top 1%)
20K12.43 mi3.11 mi1564+10973+373+31321(Top 5%)64(Top 0.5%)64(Top 1%)
Half13.11 mi0.68 mi1547+1771+271+21423(Top 5%)64(Top 0.5%)64(Top 1%)
25K15.53 mi2.42 mi1449+9867+467+41093(Top 4%)58(Top 0.5%)58(Top 1%)
30K18.64 mi3.11 mi1324+12568-168-1987(Top 3%)54(Top 0.4%)54(Top 1.0%)
20M20.00 mi1.36 mi1285+3966+266+21050(Top 4%)54(Top 0.4%)54(Top 1.0%)
21M21.00 mi1.00 mi1274+1166661725(Top 6%)89(Top 0.7%)89(Top 2%)
35K21.75 mi0.75 mi1247+2765+165+11166(Top 4%)62(Top 0.5%)62(Top 1%)
23M23.00 mi1.25 mi1206+4165651082(Top 4%)54(Top 0.4%)54(Top 1.0%)
24M24.00 mi1.00 mi1191+1563+263+21330(Top 5%)79(Top 0.6%)79(Top 1%)
40K24.85 mi0.85 mi1169+2262+162+11335(Top 5%)86(Top 0.7%)86(Top 2%)
25.2M25.20 mi0.35 mi116962621558(Top 5%)124(Top 1%)124(Top 2%)
Finish26.22 mi1.02 mi1149+2061+161+11275(Top 4%)77(Top 0.6%)77(Top 1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1583

Females

73

F18-39

73

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1725

Females

77

F18-39

77

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1583

Females

73

F18-39

73

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1321

Females

64

F18-39

64

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1423

Females

64

F18-39

64

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1093

Females

58

F18-39

58

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

987

Females

54

F18-39

54

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1050

Females

54

F18-39

54

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1725

Females

89

F18-39

89

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1166

Females

62

F18-39

62

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1082

Females

54

F18-39

54

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1330

Females

79

F18-39

79

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1335

Females

86

F18-39

86

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1558

Females

124

F18-39

124

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1275

Females

77

F18-39

77

Passing Analysis

Category:
Athletes Passed
870
Passed By
197
Net Change
+673
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1822
5K → 10K12261+61#1822#1761
10K → 15K11325+88#1761#1673
15K → 20K1145+109#1673#1564
20K → Half236+17#1564#1547
Half → 25K1002+98#1547#1449
25K → 30K1305+125#1449#1324
30K → 20M489+39#1324#1285
20M → 21M2817+11#1285#1274
21M → 35K347+27#1274#1247
35K → 23M5413+41#1247#1206
23M → 24M2914+15#1206#1191
24M → 40K308+22#1191#1169
40K → 25.2M11110#1169#1169
25.2M → Finish3414+20#1169#1149
TOTALS870197+673
📊

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