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SF MARATHON 1ST HALF 2026

Brian Kerkhof

Bib: 13312•M•Age: 44

Palo Alto, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 6575
Gender (Male)
#0 / 3619
Masters (Masters Men)
#0 / 1030
Division (M40-44)
#0 / 319
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
11:50/mi
23:41
→ flat
4M
13:19/mi
50:18
↑ 67↓ 69
6M
11:45/mi
1:13:49
↑ 1231.1%
8M
12:12/mi
1:38:14
↑ 166↓ 531.1%
9.6M
8:20/mi
1:51:34
↑ 68↓ 1931.5%
10M
19:24/mi
1:59:19
↓ 241.1%
10.5M
5:20/mi
2:01:59
↓ 732.7%
12M
14:59/mi
2:24:28
↑ 2803.2%
Finish· 13.11 mi
10:23/mi
2:35:59
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:13:49
Pace12:18 /mi
2nd Half
Distance7.11 mi
Time1:22:10
Pace11:33 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:13:2923:4111:5023:41
11:50
-
4M
4.00 mi07:40:0650:1812:3526:37
13:19
+1:29
6M
6.00 mi08:03:371:13:4912:1823:31
11:45
-1:34
8M
8.00 mi08:28:021:38:1412:1724:25
12:12
+0:27
9.6M
9.60 mi08:41:221:51:3411:3713:20
8:20
-3:52
10M
10.00 mi08:49:071:59:1911:567:45
19:24
+11:04
10.5M
10.50 mi08:51:472:01:5911:372:40
5:20
-14:04
12M
12.00 mi09:14:162:24:2812:0222:29
14:59
+9:39
Finish
13.11 mi09:25:472:35:5911:5411:31
10:23
-4:36

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

5:20 /mi

Average Pace

11:54 /mi

Slowest Pace

19:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

16:00

10% of race

Time at Steady Pace

1:49:45

70% of race

Time at Slower Pace

30:14

19% of race

Average Pace: 11:54 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi07:13:2923:4111:5023:41
11:50
#5756
4M
4.00 mi07:40:0650:1812:3526:37
13:19
#6096
6M
6.00 mi08:03:371:13:4912:1823:31
11:45
#5738
8M
8.00 mi08:28:021:38:1412:1724:25
12:12
#5499
9.6M
9.60 mi08:41:221:51:3411:3713:20
8:20
#5018
10M
10.00 mi08:49:071:59:1911:567:45
19:24
#4843
10.5M
10.50 mi08:51:472:01:5911:372:40
5:20
#4818
12M
12.00 mi09:14:162:24:2812:0222:29
14:59
#4537
Finish
13.11 mi09:25:472:35:5911:5411:31
10:23
#4397
Faster pace
Steady pace
Slower pace
Featured Segment

Garmin Challenge

Top 49%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

10:25

Segment Time

11:35/mi

Pace

0.90 mi

Distance

Overall

3247

Men

2133

Division

183

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
2M2.00 mi2.00 mi575633412943540(Top 54%)2236(Top 62%)184(Top 58%)
4M4.00 mi2.00 mi6096-3403469-128301-76231(Top 95%)3507(Top 97%)303(Top 95%)
6M6.00 mi2.00 mi5738+3583344+125288+134806(Top 73%)2968(Top 82%)246(Top 77%)
8M8.00 mi2.00 mi5499+2393259+85280+84771(Top 73%)2970(Top 82%)259(Top 81%)
9.6M9.60 mi1.60 mi5018+4813051+208261+191910(Top 29%)1265(Top 35%)98(Top 31%)
10M10.00 mi0.40 mi4843+1752968+83254+73172(Top 48%)2086(Top 58%)178(Top 56%)
10.5M10.50 mi0.50 mi4818+252957+112543993(Top 61%)2530(Top 70%)212(Top 66%)
12M12.00 mi1.50 mi4537+2812807+150235+193540(Top 54%)2236(Top 62%)184(Top 58%)
Finish13.11 mi1.11 mi4397+1402737+70230+53339(Top 51%)2149(Top 59%)182(Top 57%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 54%
~flat
+5ft-3ft

Overall

3540

Males

2236

M40-44

184

2M→4M

2.0 - 4.0 mi

Top 95%
×4story building
+67ft-69ft

Overall

6231

Males

3507

M40-44

303

4M→6M

4.0 - 6.0 mi

Top 73%
×9story building
+123ft-9ft

Overall

4806

Males

2968

M40-44

246

6M→8M

6.0 - 8.0 mi

Top 73%
×12story building
+166ft-53ft

Overall

4771

Males

2970

M40-44

259

8M→9.6M

8.0 - 9.6 mi

Top 29%
×13story building
+68ft-193ft

Overall

1910

Males

1265

M40-44

98

9.6M→10M

9.6 - 10.0 mi

Top 48%
×2story building
+0ft-24ft

Overall

3172

Males

2086

M40-44

178

10M→10.5M

10.0 - 10.5 mi

Top 61%
×6story building
+1ft-73ft

Overall

3993

Males

2530

M40-44

212

10.5M→12M

10.5 - 12.0 mi

Top 54%
×21story building
+280ft-26ft

Overall

3540

Males

2236

M40-44

184

12M→Finish

12.0 - 13.1 mi

Top 51%
×7story building
+14ft-89ft

Overall

3339

Males

2149

M40-44

182

Passing Analysis

Category:
Athletes Passed
1797*
Passed By
438
Net Change
+1359
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#5756
2M → 4M29*369-340#5756#6096
4M → 6M365*7+358#6096#5738
6M → 8M267*28+239#5738#5499
8M → 9.6M4821+481#5499#5018
9.6M → 10M1783+175#5018#4843
10M → 10.5M261+25#4843#4818
10.5M → 12M306*25+281#4818#4537
12M → Finish144*4+140#4537#4397
TOTALS1797*438+1359

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events